{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"1519418","name":"D-8 Cloverlick","status":"Abandoned","status_date":"2018-07-08","mine_type":"Underground","coal_metal":"C","commodity":"Coal (Bituminous)","state":"KY","county":"Harlan","nearest_town":"Cumberland","operator_id":"0100767","operator_name":"Blackjewel L.L.C.","controller_id":"C15863","controller_name":"Jeffery A  Hoops","district":"C07","office":"Hazard KY Field Office","employees":0,"latitude":36.933889,"longitude":-82.978333},"coverage":{"contributingSources":17,"registeredSources":20,"sourceRows":6398},"relationships":{"schemaVersion":"realm.temporal-relationships.v1","temporalSemantics":{"validTime":{"granularity":"date","bounds":"inclusive","nullStart":"start date not published in the upstream history row","nullEnd":"open-ended in the upstream history row; not independent proof of present control"},"transactionTime":{"observedAt":"2026-10-13T11:19:05.459773+00:00","meaning":"time the checksum-addressed MDRS artifacts were observed by the PostgreSQL ingestion"},"derivation":{"controllerControlsOperator":"intersection of controller and operator valid-time intervals evidenced through this mine","currentIdentity":"current controller and operator are asserted only by the MDRS Mines snapshot"}},"current":{"mine":{"type":"mine","id":"1519418","name":"D-8 Cloverlick"},"operator":{"type":"operator","id":"0100767","name":"Blackjewel L.L.C."},"controller":{"type":"controller","id":"C15863","name":"Jeffery A  Hoops"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13461","name":"Paul M  Hogg"},"object":{"type":"mine","id":"1519418","name":"D-8 Cloverlick"},"validFrom":"1989-05-01","validTo":"2025-03-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|C13461|1989-05-01|2025-03-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C07082","name":"Cumberland Resources Corporation"},"object":{"type":"mine","id":"1519418","name":"D-8 Cloverlick"},"validFrom":"1994-08-01","validTo":"2010-04-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|C07082|1994-08-01|2010-04-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C07082","name":"Cumberland Resources Corporation"},"object":{"type":"mine","id":"1519418","name":"D-8 Cloverlick"},"validFrom":"2000-02-01","validTo":"2010-04-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|C07082|2000-02-01|2010-04-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15863","name":"Jeffery A  Hoops"},"object":{"type":"mine","id":"1519418","name":"D-8 Cloverlick"},"validFrom":"2009-05-08","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|C15863|2009-05-08|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P24342","name":"Cloverlick Coal Company LLC"},"object":{"type":"mine","id":"1519418","name":"D-8 Cloverlick"},"validFrom":"2009-07-08","validTo":"2012-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|P24342|2009-07-08|2012-12-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C07082","name":"Cumberland Resources Corporation"},"object":{"type":"operator","id":"P24342","name":"Cloverlick Coal Company LLC"},"validFrom":"2009-07-08","validTo":"2010-04-18","current":false,"derived":true,"evidenceMineId":"1519418","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|P24342|2009-07-08|C07082|2000-02-01|73743"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02508","name":"Massey Energy Company"},"object":{"type":"mine","id":"1519418","name":"D-8 Cloverlick"},"validFrom":"2010-04-19","validTo":"2011-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|C02508|2010-04-19|2011-05-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02508","name":"Massey Energy Company"},"object":{"type":"operator","id":"P24342","name":"Cloverlick Coal Company LLC"},"validFrom":"2010-04-19","validTo":"2011-05-31","current":false,"derived":true,"evidenceMineId":"1519418","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|P24342|2009-07-08|C02508|2010-04-19|59573"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0041211","name":"Alpha Natural Resources, Inc."},"object":{"type":"mine","id":"1519418","name":"D-8 Cloverlick"},"validFrom":"2011-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|0041211|2011-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0041211","name":"Alpha Natural Resources, Inc."},"object":{"type":"operator","id":"P24342","name":"Cloverlick Coal Company LLC"},"validFrom":"2011-06-01","validTo":"2012-12-31","current":false,"derived":true,"evidenceMineId":"1519418","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|P24342|2009-07-08|0041211|2011-06-01|2261"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P22905","name":"North Fork Coal Corporation"},"object":{"type":"mine","id":"1519418","name":"D-8 Cloverlick"},"validFrom":"2013-01-01","validTo":"2013-11-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|P22905|2013-01-01|2013-11-26"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0041211","name":"Alpha Natural Resources, Inc."},"object":{"type":"operator","id":"P22905","name":"North Fork Coal Corporation"},"validFrom":"2013-01-01","validTo":"2013-11-26","current":false,"derived":true,"evidenceMineId":"1519418","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|P22905|2013-01-01|0041211|2011-06-01|2262"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02508","name":"Massey Energy Company"},"object":{"type":"operator","id":"P22905","name":"North Fork Coal Corporation"},"validFrom":"2013-01-01","validTo":"2011-05-31","current":false,"derived":true,"evidenceMineId":"1519418","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|P22905|2013-01-01|C02508|2010-04-19|59574"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C07082","name":"Cumberland Resources Corporation"},"object":{"type":"operator","id":"P22905","name":"North Fork Coal Corporation"},"validFrom":"2013-01-01","validTo":"2010-04-18","current":false,"derived":true,"evidenceMineId":"1519418","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|P22905|2013-01-01|C07082|1994-08-01|73695"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P20251","name":"Jarisa Inc."},"object":{"type":"mine","id":"1519418","name":"D-8 Cloverlick"},"validFrom":"2013-11-27","validTo":"2015-08-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|P20251|2013-11-27|2015-08-24"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13461","name":"Paul M  Hogg"},"object":{"type":"operator","id":"P20251","name":"Jarisa Inc."},"validFrom":"2013-11-27","validTo":"2015-08-24","current":false,"derived":true,"evidenceMineId":"1519418","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|P20251|2013-11-27|C13461|1989-05-01|90069"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0100767","name":"Blackjewel L.L.C."},"object":{"type":"mine","id":"1519418","name":"D-8 Cloverlick"},"validFrom":"2015-08-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|0100767|2015-08-25|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15863","name":"Jeffery A  Hoops"},"object":{"type":"operator","id":"0100767","name":"Blackjewel L.L.C."},"validFrom":"2015-08-25","validTo":null,"current":true,"derived":true,"evidenceMineId":"1519418","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|0100767|2015-08-25|C15863|2009-05-08|97240"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0191521","name":"Jason  Hogg et al"},"object":{"type":"mine","id":"1519418","name":"D-8 Cloverlick"},"validFrom":"2025-03-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|0191521|2025-03-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0191521","name":"Jason  Hogg et al"},"object":{"type":"operator","id":"P20251","name":"Jarisa Inc."},"validFrom":"2025-03-19","validTo":"2015-08-24","current":false,"derived":true,"evidenceMineId":"1519418","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|P20251|2013-11-27|0191521|2025-03-19|40775"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0191521","name":"Larissa  Bailey et al"},"object":{"type":"operator","id":"P20251","name":"Jarisa Inc."},"validFrom":"2025-03-19","validTo":"2015-08-24","current":false,"derived":true,"evidenceMineId":"1519418","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519418|P20251|2013-11-27|0191521|2025-03-19|40776"}}],"coverage":{"historyRecords":10,"edgeCount":21,"intervalAnomalies":4,"sourceDatasetId":"msha-controller-operator-history"}},"sources":[{"id":"msha-accidents","name":"Accident, Injuries, and Illnesses","domains":["safety","contractors"],"products":["incident trends","severity rates","equipment patterns","peer denominators"],"rowCount":51,"firstDate":"2010-03-12","lastDate":"2018-04-03","metrics":{"daysLost":2289,"injuries":45,"fatalities":0,"recentRows":0,"restrictedDays":44,"contractorRecords":1},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"208036","DOCUMENT_NO":"220180990022","ACCIDENT_DT":"04/03/2018","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Over-exertion in lifting objects","OCCUPATION":"Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech","NO_INJURIES":"1","DAYS_LOST":"64","NARRATIVE":"While lifting an I beam, when they twisted they felt a sharp pain in the left leg.","sourceDate":"2018-04-03"},{"SOURCE_ROW_NUMBER":"61711","DOCUMENT_NO":"220180800012","ACCIDENT_DT":"01/15/2018","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Over-exertion in pulling or pushing objects","OCCUPATION":"Shuttle car operator, Mantrip operator, Ramcar operator, Rail runner, Buggy operator","NO_INJURIES":"1","DAYS_LOST":"45","NARRATIVE":"EE was moving car anchor & pulling cable off of reel when ee felt sharp pain in lower back. EE was released back to work 1/17/18. EE returned with no restrictions on 3/19/18.","sourceDate":"2018-01-15"},{"SOURCE_ROW_NUMBER":"36008","DOCUMENT_NO":"220173610001","ACCIDENT_DT":"12/18/2017","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"OTHER","ACCIDENT_TYPE":"Bodily reaction, NEC","OCCUPATION":"Electrician, Lineman","NO_INJURIES":"1","DAYS_LOST":"4","NARRATIVE":"Employee was stepping over a large clevis & felt & heard a popping sound in left leg. Employee has a strain to employee's left calf muscle.","sourceDate":"2017-12-18"},{"SOURCE_ROW_NUMBER":"177957","DOCUMENT_NO":"220173100038","ACCIDENT_DT":"10/26/2017","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Struck by falling object","OCCUPATION":"Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech","NO_INJURIES":"1","DAYS_LOST":"56","NARRATIVE":"Employee was fitting a door on deck of Fairchild battery scoop deck & door fell off deck landing on left foot behind steel toe.","sourceDate":"2017-10-26"},{"SOURCE_ROW_NUMBER":"147875","DOCUMENT_NO":"220172220014","ACCIDENT_DT":"07/22/2017","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"SLIP OR FALL OF PERSON","ACCIDENT_TYPE":"Fall from machine","OCCUPATION":"Electrician, Lineman","NO_INJURIES":"1","DAYS_LOST":"142","NARRATIVE":"EE stumbled & fell when ee got off mantrip. EE tried to catch self, felt sharp pain in left wrist, wrist is swollen. EE went to doctor & was given FULL DUTY RETURN TO WORK RELEASE. EE followed up with doctor a week later & was taken off work on 08/08/2017 until evaluated by specialist. EE was diagnosed with a ligament tear in left wrist.","sourceDate":"2017-07-22"},{"SOURCE_ROW_NUMBER":"36007","DOCUMENT_NO":"220170330017","ACCIDENT_DT":"01/31/2017","DEGREE_INJURY":"NO DYS AWY FRM WRK,NO RSTR ACT","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Struck by... NEC","OCCUPATION":"Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"Squaring in the first cut with roof bolter, was getting strap out of tray, strap slipped cutting left forearm. Employee was transported to Whitesburg ARH and received sutures & dermabond to close wound. Employee was released without restrictions to return to next shift.","sourceDate":"2017-01-31"},{"SOURCE_ROW_NUMBER":"233873","DOCUMENT_NO":"220170060007","ACCIDENT_DT":"01/04/2017","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"FALL OF ROOF OR BACK","ACCIDENT_TYPE":"Struck by falling object","OCCUPATION":"Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)","NO_INJURIES":"1","DAYS_LOST":"3","NARRATIVE":"Employee was in process of installing roof support in #4 entry on 004 section. EE just had got drill steel started in the top. EE engaged the up pressure and rock fell striking left elbow. Causing a cut which at ER was glued but ee followed up with physician who took out the glue and put in 3 sutures and having ee off work.","sourceDate":"2017-01-04"},{"SOURCE_ROW_NUMBER":"139207","DOCUMENT_NO":"220163090035","ACCIDENT_DT":"11/03/2016","DEGREE_INJURY":"ACCIDENT ONLY","CLASSIFICATION":"FALL OF ROOF OR BACK","ACCIDENT_TYPE":"Accident type, without injuries","OCCUPATION":"NO VALUE FOUND","NO_INJURIES":"0","NARRATIVE":"An unintended fall of the roof on the 003 (retreat mining section) in the #4 entry, inby cross-cut number 20. The fall entrapped the #1 MRS unit inby the fall. 103(k) order was issued & later terminated with the mine returning to production. MRS unit was recovered, NO injuries. Section returned to normal production 8:40 AM on 11/04/16.","sourceDate":"2016-11-03"},{"SOURCE_ROW_NUMBER":"165033","DOCUMENT_NO":"220170060019","ACCIDENT_DT":"10/07/2016","DEGREE_INJURY":"DYS AWY FRM WRK & RESTRCTD ACT","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Over-exertion in lifting objects","OCCUPATION":"Section foreman, Bullgang foreman, Labor foreman, Leadman, Shift boss","NO_INJURIES":"1","DAYS_LOST":"34","NARRATIVE":"Employee was carrying timbers in low height 46\"-52\" over a distance of 200' over irregular bottom. Setting timbers and building cribs in a bleeder. Employee strained back. Employee did not start loss of time until January 3, 2017, and is off waiting for back surgery.","sourceDate":"2016-10-07"},{"SOURCE_ROW_NUMBER":"83326","DOCUMENT_NO":"220162140023","ACCIDENT_DT":"07/25/2016","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"POWERED HAULAGE","ACCIDENT_TYPE":"Struck against stationary object","OCCUPATION":"Scoop car/Scooptram operator, Load/Haul/Dump (LHD) operator, Teletram operator","NO_INJURIES":"1","DAYS_LOST":"228","NARRATIVE":"Employee was coming back from getting bolting supplies and hit head on the mine roof while on the lo trac.","sourceDate":"2016-07-25"},{"SOURCE_ROW_NUMBER":"18775","DOCUMENT_NO":"220161750039","ACCIDENT_DT":"06/15/2016","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Over-exertion in lifting objects","OCCUPATION":"Scoop car/Scooptram operator, Load/Haul/Dump (LHD) operator, Teletram operator","NO_INJURIES":"1","DAYS_LOST":"89","NARRATIVE":"Employee was loading pans for pinner into scoop bucket. Bent over & picked them up when a sharp pain in lower back.","sourceDate":"2016-06-15"},{"SOURCE_ROW_NUMBER":"74623","DOCUMENT_NO":"220161740020","ACCIDENT_DT":"06/13/2016","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Over-exertion in pulling or pushing objects","OCCUPATION":"Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)","NO_INJURIES":"1","DAYS_LOST":"160","NARRATIVE":"Employee was bolting in the #1 entry, EE was pulling on a roof strap to line it up and felt pain/pop in shoulder. Could not raise arm up without pain afterward.","sourceDate":"2016-06-13"}]},{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"2018-07-08","lastDate":"2018-07-08","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":1033,"firstDate":"2009-07-08","lastDate":"2018-06-07","metrics":{"ss":239,"delinquent":580,"recentRows":0,"paidPenalty":146493.47,"proposedPenalty":302710,"currentAssessment":257551},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1990971","VIOLATION_NO":"9131512","ISSUE_DT":"06/07/2018","CFR_STANDARD_CD":"75.403","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"691.00","CURRENT_ASSESSMENT_AMT":"691.00","ASSESS_CASE_STATUS_CD":"Received","sourceDate":"2018-06-07"},{"SOURCE_ROW_NUMBER":"1990970","VIOLATION_NO":"9131511","ISSUE_DT":"06/07/2018","CFR_STANDARD_CD":"75.403","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"691.00","CURRENT_ASSESSMENT_AMT":"691.00","ASSESS_CASE_STATUS_CD":"Received","sourceDate":"2018-06-07"},{"SOURCE_ROW_NUMBER":"1490978","VIOLATION_NO":"8400947","ISSUE_DT":"06/06/2018","CFR_STANDARD_CD":"75.220(a)(1)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"243.00","CURRENT_ASSESSMENT_AMT":"243.00","ASSESS_CASE_STATUS_CD":"Received","sourceDate":"2018-06-06"},{"SOURCE_ROW_NUMBER":"1475643","VIOLATION_NO":"8321768","ISSUE_DT":"06/01/2018","CFR_STANDARD_CD":"75.403","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"208.00","CURRENT_ASSESSMENT_AMT":"208.00","ASSESS_CASE_STATUS_CD":"Received","sourceDate":"2018-06-01"},{"SOURCE_ROW_NUMBER":"1471472","VIOLATION_NO":"9134764","ISSUE_DT":"05/29/2018","CFR_STANDARD_CD":"75.523-3(c)(2)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"208.00","CURRENT_ASSESSMENT_AMT":"208.00","ASSESS_CASE_STATUS_CD":"Received","sourceDate":"2018-05-29"},{"SOURCE_ROW_NUMBER":"1471471","VIOLATION_NO":"9134763","ISSUE_DT":"05/29/2018","CFR_STANDARD_CD":"75.523-3(c)(2)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"208.00","CURRENT_ASSESSMENT_AMT":"208.00","ASSESS_CASE_STATUS_CD":"Received","sourceDate":"2018-05-29"},{"SOURCE_ROW_NUMBER":"1471470","VIOLATION_NO":"9134762","ISSUE_DT":"05/24/2018","CFR_STANDARD_CD":"75.312(c)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"138.00","CURRENT_ASSESSMENT_AMT":"138.00","ASSESS_CASE_STATUS_CD":"Received","sourceDate":"2018-05-24"},{"SOURCE_ROW_NUMBER":"1471436","VIOLATION_NO":"8301581","ISSUE_DT":"05/24/2018","CFR_STANDARD_CD":"75.517","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"1031.00","CURRENT_ASSESSMENT_AMT":"800.00","ASSESS_CASE_STATUS_CD":"Received","sourceDate":"2018-05-24"},{"SOURCE_ROW_NUMBER":"1471467","VIOLATION_NO":"9131950","ISSUE_DT":"05/22/2018","CFR_STANDARD_CD":"75.1914(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"1312.00","CURRENT_ASSESSMENT_AMT":"525.00","ASSESS_CASE_STATUS_CD":"Received","sourceDate":"2018-05-22"},{"SOURCE_ROW_NUMBER":"1471466","VIOLATION_NO":"9131949","ISSUE_DT":"05/22/2018","CFR_STANDARD_CD":"75.342(a)(4)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"264.00","CURRENT_ASSESSMENT_AMT":"264.00","ASSESS_CASE_STATUS_CD":"Received","sourceDate":"2018-05-22"},{"SOURCE_ROW_NUMBER":"1471465","VIOLATION_NO":"9131948","ISSUE_DT":"05/09/2018","CFR_STANDARD_CD":"75.351(n)(3)(i)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"208.00","CURRENT_ASSESSMENT_AMT":"208.00","ASSESS_CASE_STATUS_CD":"Received","sourceDate":"2018-05-09"},{"SOURCE_ROW_NUMBER":"1471464","VIOLATION_NO":"9131946","ISSUE_DT":"05/04/2018","CFR_STANDARD_CD":"77.1104","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"128.00","CURRENT_ASSESSMENT_AMT":"128.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2018-05-04"}]},{"id":"msha-civil-penalty-dockets-decisions","name":"Civil Penalty Dockets and Decisions","domains":["compliance","legal"],"products":["docket lineage","decision outcomes","citation packet precedent"],"rowCount":607,"firstDate":"2011-02-01","lastDate":"2019-03-08","metrics":{"appeals":0,"decisions":607,"recentRows":0,"decisionPenalty":183042,"originalPenalty":257322},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"405908","VIOLATION_NO":"9131948","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"208.00","DECISION_PENALTY_AMT":"208.00","JUDGE_FIRST_NAME":"Thomas","JUDGE_LAST_NAME":"McCarthy","sourceDate":"2019-03-08"},{"SOURCE_ROW_NUMBER":"405907","VIOLATION_NO":"8321768","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"208.00","DECISION_PENALTY_AMT":"208.00","JUDGE_FIRST_NAME":"Thomas","JUDGE_LAST_NAME":"McCarthy","sourceDate":"2019-03-08"},{"SOURCE_ROW_NUMBER":"405344","VIOLATION_NO":"9134764","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"208.00","DECISION_PENALTY_AMT":"208.00","JUDGE_FIRST_NAME":"Thomas","JUDGE_LAST_NAME":"McCarthy","sourceDate":"2019-03-08"},{"SOURCE_ROW_NUMBER":"405343","VIOLATION_NO":"9131512","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"691.00","DECISION_PENALTY_AMT":"691.00","JUDGE_FIRST_NAME":"Thomas","JUDGE_LAST_NAME":"McCarthy","sourceDate":"2019-03-08"},{"SOURCE_ROW_NUMBER":"405183","VIOLATION_NO":"9134763","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"208.00","DECISION_PENALTY_AMT":"208.00","JUDGE_FIRST_NAME":"Thomas","JUDGE_LAST_NAME":"McCarthy","sourceDate":"2019-03-08"},{"SOURCE_ROW_NUMBER":"404482","VIOLATION_NO":"9134762","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"138.00","DECISION_PENALTY_AMT":"138.00","JUDGE_FIRST_NAME":"Thomas","JUDGE_LAST_NAME":"McCarthy","sourceDate":"2019-03-08"},{"SOURCE_ROW_NUMBER":"404481","VIOLATION_NO":"9131950","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"1312.00","DECISION_PENALTY_AMT":"525.00","JUDGE_FIRST_NAME":"Thomas","JUDGE_LAST_NAME":"McCarthy","sourceDate":"2019-03-08"},{"SOURCE_ROW_NUMBER":"134849","VIOLATION_NO":"8301581","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"1031.00","DECISION_PENALTY_AMT":"800.00","JUDGE_FIRST_NAME":"Thomas","JUDGE_LAST_NAME":"McCarthy","sourceDate":"2019-03-08"},{"SOURCE_ROW_NUMBER":"134737","VIOLATION_NO":"9131511","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"691.00","DECISION_PENALTY_AMT":"691.00","JUDGE_FIRST_NAME":"Thomas","JUDGE_LAST_NAME":"McCarthy","sourceDate":"2019-03-08"},{"SOURCE_ROW_NUMBER":"134536","VIOLATION_NO":"9131949","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"264.00","DECISION_PENALTY_AMT":"264.00","JUDGE_FIRST_NAME":"Thomas","JUDGE_LAST_NAME":"McCarthy","sourceDate":"2019-03-08"},{"SOURCE_ROW_NUMBER":"134535","VIOLATION_NO":"8400947","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"243.00","DECISION_PENALTY_AMT":"243.00","JUDGE_FIRST_NAME":"Thomas","JUDGE_LAST_NAME":"McCarthy","sourceDate":"2019-03-08"},{"SOURCE_ROW_NUMBER":"404394","VIOLATION_NO":"9131934","DOCKET_NO":"KENT 2018-0331","DECISION_DT":"11/01/2018","DECISION_TYPE_CODE_DESC":"Default","ORIGINAL_PENALTY_AMT":"429.00","DECISION_PENALTY_AMT":"429.00","JUDGE_FIRST_NAME":"Robert","JUDGE_LAST_NAME":"Lesnick","sourceDate":"2018-11-01"}]},{"id":"msha-coal-dust-samples","name":"Coal Dust Samples","domains":["health","safety"],"products":["respirable dust trends","CPDM coverage","void patterns","occupation exposure"],"rowCount":1551,"firstDate":"2009-11-23","lastDate":"2018-06-22","metrics":{"recentRows":0,"cpdmSamples":574,"voidSamples":183,"validSamples":1368,"maxConcentration":5.783,"concentrationTotal":656.312},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1685009","SMP_TAKEN_DT":"6/22/2018","CONC":".38","SMP_TYPE_CD_DESC":"NON DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"NOT YET USED IN DETERMINATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"ROOF BOLTER (TWIN HEAD) (RETURN SIDE)","DEVICE_TYPE_CD":"CPDM","sourceDate":"2018-06-22"},{"SOURCE_ROW_NUMBER":"2708867","SMP_TAKEN_DT":"6/21/2018","CONC":".099","SMP_TYPE_CD_DESC":"NON DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"NOT YET USED IN DETERMINATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"ROOF BOLTER (TWIN HEAD) (RETURN SIDE)","DEVICE_TYPE_CD":"CPDM","sourceDate":"2018-06-21"},{"SOURCE_ROW_NUMBER":"1770965","SMP_TAKEN_DT":"6/21/2018","CONC":".167","SMP_TYPE_CD_DESC":"NON DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"NOT YET USED IN DETERMINATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"ROOF BOLTER (TWIN HEAD) (RETURN SIDE)","DEVICE_TYPE_CD":"CPDM","sourceDate":"2018-06-21"},{"SOURCE_ROW_NUMBER":"2709015","SMP_TAKEN_DT":"6/20/2018","CONC":".191","SMP_TYPE_CD_DESC":"NON DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"NOT YET USED IN DETERMINATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"ROOF BOLTER (TWIN HEAD) (RETURN SIDE)","DEVICE_TYPE_CD":"CPDM","sourceDate":"2018-06-20"},{"SOURCE_ROW_NUMBER":"2623453","SMP_TAKEN_DT":"6/20/2018","CONC":".205","SMP_TYPE_CD_DESC":"NON DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"NOT YET USED IN DETERMINATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"ROOF BOLTER (TWIN HEAD) (RETURN SIDE)","DEVICE_TYPE_CD":"CPDM","sourceDate":"2018-06-20"},{"SOURCE_ROW_NUMBER":"2537198","SMP_TAKEN_DT":"6/19/2018","CONC":".217","SMP_TYPE_CD_DESC":"NON DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"NOT YET USED IN DETERMINATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"ROOF BOLTER (TWIN HEAD) (RETURN SIDE)","DEVICE_TYPE_CD":"CPDM","sourceDate":"2018-06-19"},{"SOURCE_ROW_NUMBER":"1856167","SMP_TAKEN_DT":"6/19/2018","CONC":".11","SMP_TYPE_CD_DESC":"NON DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"VOID SAMPLE","VOID_CD_DESC":"INVALID OR MISSING TIME","OCC_CD_DESC":"ROOF BOLTER (TWIN HEAD) (RETURN SIDE)","DEVICE_TYPE_CD":"CPDM","sourceDate":"2018-06-19"},{"SOURCE_ROW_NUMBER":"2623689","SMP_TAKEN_DT":"6/18/2018","CONC":".218","SMP_TYPE_CD_DESC":"NON DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"NOT YET USED IN DETERMINATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"ROOF BOLTER (TWIN HEAD) (RETURN SIDE)","DEVICE_TYPE_CD":"CPDM","sourceDate":"2018-06-18"},{"SOURCE_ROW_NUMBER":"2537046","SMP_TAKEN_DT":"6/18/2018","CONC":".05","SMP_TYPE_CD_DESC":"NON DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"NOT YET USED IN DETERMINATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"ROOF BOLTER (TWIN HEAD) (RETURN SIDE)","DEVICE_TYPE_CD":"CPDM","sourceDate":"2018-06-18"},{"SOURCE_ROW_NUMBER":"2452554","SMP_TAKEN_DT":"6/16/2018","CONC":".111","SMP_TYPE_CD_DESC":"NON DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"NOT YET USED IN DETERMINATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"ROOF BOLTER (TWIN HEAD) (RETURN SIDE)","DEVICE_TYPE_CD":"CPDM","sourceDate":"2018-06-16"},{"SOURCE_ROW_NUMBER":"1685809","SMP_TAKEN_DT":"6/16/2018","CONC":".159","SMP_TYPE_CD_DESC":"NON DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"VOID SAMPLE","VOID_CD_DESC":"INVALID PRODUCTION","OCC_CD_DESC":"ROOF BOLTER (TWIN HEAD) (RETURN SIDE)","DEVICE_TYPE_CD":"CPDM","sourceDate":"2018-06-16"},{"SOURCE_ROW_NUMBER":"2964240","SMP_TAKEN_DT":"6/15/2018","CONC":".041","SMP_TYPE_CD_DESC":"NON DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"VOID SAMPLE","VOID_CD_DESC":"UNREPRESENTATIVE SAMPLE","OCC_CD_DESC":"ROOF BOLTER (TWIN HEAD) (RETURN SIDE)","DEVICE_TYPE_CD":"CPDM","sourceDate":"2018-06-15"}]},{"id":"msha-conferences","name":"Conferences","domains":["compliance","legal"],"products":["conference history","post-issuance changes","citation lifecycle"],"rowCount":29,"firstDate":"2012-08-15","lastDate":"2018-05-23","metrics":{"linkedIssuances":29},"periods":{},"recentRecords":[]},{"id":"msha-contested-violations","name":"Contested Violations","domains":["compliance","legal"],"products":["contest status","time to resolution","contested-rate context"],"rowCount":607,"firstDate":"2009-07-08","lastDate":"2018-06-07","metrics":{"decisions":607,"ssChanged":88,"recentRows":0,"decisionPenalty":183042,"proposedPenalty":257322},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"328176","CITATION_NO":"9131512","CITATION_ISSUE_DT":"06/07/2018","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","CFR_STANDARD_CODE":"75.403","ORIGINAL_SIG_SUB_IND":"N","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"691.00","DECISION_PENALTY_AMT":"691.00","sourceDate":"2018-06-07"},{"SOURCE_ROW_NUMBER":"212984","CITATION_NO":"9131511","CITATION_ISSUE_DT":"06/07/2018","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","CFR_STANDARD_CODE":"75.403","ORIGINAL_SIG_SUB_IND":"N","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"691.00","DECISION_PENALTY_AMT":"691.00","sourceDate":"2018-06-07"},{"SOURCE_ROW_NUMBER":"272666","CITATION_NO":"8400947","CITATION_ISSUE_DT":"06/06/2018","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","CFR_STANDARD_CODE":"75.220(a)(1)","ORIGINAL_SIG_SUB_IND":"N","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"243.00","DECISION_PENALTY_AMT":"243.00","sourceDate":"2018-06-06"},{"SOURCE_ROW_NUMBER":"44085","CITATION_NO":"8321768","CITATION_ISSUE_DT":"06/01/2018","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","CFR_STANDARD_CODE":"75.403","ORIGINAL_SIG_SUB_IND":"N","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"208.00","DECISION_PENALTY_AMT":"208.00","sourceDate":"2018-06-01"},{"SOURCE_ROW_NUMBER":"442487","CITATION_NO":"9134764","CITATION_ISSUE_DT":"05/29/2018","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","CFR_STANDARD_CODE":"75.523-3(c)(2)","ORIGINAL_SIG_SUB_IND":"N","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"208.00","DECISION_PENALTY_AMT":"208.00","sourceDate":"2018-05-29"},{"SOURCE_ROW_NUMBER":"382033","CITATION_NO":"9134763","CITATION_ISSUE_DT":"05/29/2018","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","CFR_STANDARD_CODE":"75.523-3(c)(2)","ORIGINAL_SIG_SUB_IND":"N","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"208.00","DECISION_PENALTY_AMT":"208.00","sourceDate":"2018-05-29"},{"SOURCE_ROW_NUMBER":"214188","CITATION_NO":"8301581","CITATION_ISSUE_DT":"05/24/2018","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","CFR_STANDARD_CODE":"75.517","ORIGINAL_SIG_SUB_IND":"Y","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"1031.00","DECISION_PENALTY_AMT":"800.00","sourceDate":"2018-05-24"},{"SOURCE_ROW_NUMBER":"99233","CITATION_NO":"9134762","CITATION_ISSUE_DT":"05/24/2018","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","CFR_STANDARD_CODE":"75.312(c)","ORIGINAL_SIG_SUB_IND":"N","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"138.00","DECISION_PENALTY_AMT":"138.00","sourceDate":"2018-05-24"},{"SOURCE_ROW_NUMBER":"383998","CITATION_NO":"9131950","CITATION_ISSUE_DT":"05/22/2018","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","CFR_STANDARD_CODE":"75.1914(a)","ORIGINAL_SIG_SUB_IND":"Y","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"1312.00","DECISION_PENALTY_AMT":"525.00","sourceDate":"2018-05-22"},{"SOURCE_ROW_NUMBER":"46395","CITATION_NO":"9131949","CITATION_ISSUE_DT":"05/22/2018","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","CFR_STANDARD_CODE":"75.342(a)(4)","ORIGINAL_SIG_SUB_IND":"N","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"264.00","DECISION_PENALTY_AMT":"264.00","sourceDate":"2018-05-22"},{"SOURCE_ROW_NUMBER":"439036","CITATION_NO":"9131948","CITATION_ISSUE_DT":"05/09/2018","DOCKET_NO":"KENT 2018-0359","DECISION_DT":"03/08/2019","CFR_STANDARD_CODE":"75.351(n)(3)(i)","ORIGINAL_SIG_SUB_IND":"N","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"208.00","DECISION_PENALTY_AMT":"208.00","sourceDate":"2018-05-09"},{"SOURCE_ROW_NUMBER":"271444","CITATION_NO":"9131935","CITATION_ISSUE_DT":"04/30/2018","DOCKET_NO":"KENT 2018-0331","DECISION_DT":"11/01/2018","CFR_STANDARD_CODE":"75.523-3(b)(5)","ORIGINAL_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"208.00","DECISION_PENALTY_AMT":"208.00","sourceDate":"2018-04-30"}]},{"id":"msha-contractor-production-quarterly","name":"Contractor Employment and Production — Quarterly","domains":["contractors","production","safety"],"products":["contractor exposure denominator","productivity","presence windows"],"rowCount":795,"firstDate":null,"lastDate":null,"metrics":{"linkedContractors":9,"notMineAttributable":1},"periods":{},"recentRecords":[]},{"id":"msha-contractor-production-yearly","name":"Contractor Employment and Production — Yearly","domains":["contractors","production","safety"],"products":["long-run contractor trend","annual denominator reconciliation"],"rowCount":153,"firstDate":null,"lastDate":null,"metrics":{"linkedContractors":9,"notMineAttributable":1},"periods":{},"recentRecords":[]},{"id":"msha-controller-operator-history","name":"Controller and Operator History","domains":["identity","compliance"],"products":["historical ownership attribution","operator transitions","valid-time joins"],"rowCount":10,"firstDate":"2009-07-08","lastDate":"2015-08-25","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":9},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":93,"firstDate":"2009-07-08","lastDate":"2018-06-28","metrics":{"inspectors":337,"recentRows":0,"onSiteHours":7269,"inspectionHours":11833.75,"inspectionSamples":1304},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"513905","EVENT_NO":"4453448","INSPECTION_BEGIN_DT":"06/28/2018","INSPECTION_END_DT":"06/28/2018","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4.75","SUM_TOTAL_ON_SITE_HOURS":"3.5","sourceDate":"2018-06-28"},{"SOURCE_ROW_NUMBER":"968527","EVENT_NO":"6428770","INSPECTION_BEGIN_DT":"06/07/2018","INSPECTION_END_DT":"06/07/2018","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"10","SUM_TOTAL_ON_SITE_HOURS":"5","sourceDate":"2018-06-07"},{"SOURCE_ROW_NUMBER":"486840","EVENT_NO":"4468883","INSPECTION_BEGIN_DT":"06/06/2018","INSPECTION_END_DT":"06/06/2018","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"17.5","SUM_TOTAL_ON_SITE_HOURS":"12","sourceDate":"2018-06-06"},{"SOURCE_ROW_NUMBER":"1036543","EVENT_NO":"4455088","INSPECTION_BEGIN_DT":"06/01/2018","INSPECTION_END_DT":"06/04/2018","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"7","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2018-06-01"},{"SOURCE_ROW_NUMBER":"56280","EVENT_NO":"4455925","INSPECTION_BEGIN_DT":"05/31/2018","INSPECTION_END_DT":"06/26/2018","ACTIVITY_CODE":"E08","ACTIVITY":"Non-Injury Accident Investigation","NBR_INSPECTOR":"6","SUM_TOTAL_INSP_HOURS":"47.75","SUM_TOTAL_ON_SITE_HOURS":"22.5","sourceDate":"2018-05-31"},{"SOURCE_ROW_NUMBER":"151906","EVENT_NO":"4453703","INSPECTION_BEGIN_DT":"04/19/2018","INSPECTION_END_DT":"04/24/2018","ACTIVITY_CODE":"E08","ACTIVITY":"Non-Injury Accident Investigation","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"17","SUM_TOTAL_ON_SITE_HOURS":"8.5","sourceDate":"2018-04-19"},{"SOURCE_ROW_NUMBER":"528083","EVENT_NO":"4453702","INSPECTION_BEGIN_DT":"04/02/2018","INSPECTION_END_DT":"05/31/2018","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"14","SUM_TOTAL_INSP_HOURS":"393.25","SUM_TOTAL_ON_SITE_HOURS":"212","sourceDate":"2018-04-02"},{"SOURCE_ROW_NUMBER":"127613","EVENT_NO":"4455942","INSPECTION_BEGIN_DT":"03/29/2018","INSPECTION_END_DT":"03/29/2018","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"11","SUM_TOTAL_ON_SITE_HOURS":"7","sourceDate":"2018-03-29"},{"SOURCE_ROW_NUMBER":"547912","EVENT_NO":"4455077","INSPECTION_BEGIN_DT":"03/08/2018","INSPECTION_END_DT":"03/08/2018","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"16.5","SUM_TOTAL_ON_SITE_HOURS":"9","sourceDate":"2018-03-08"},{"SOURCE_ROW_NUMBER":"20597","EVENT_NO":"4454804","INSPECTION_BEGIN_DT":"01/02/2018","INSPECTION_END_DT":"03/21/2018","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"5","SUM_TOTAL_INSP_HOURS":"483.75","SUM_TOTAL_ON_SITE_HOURS":"255","sourceDate":"2018-01-02"},{"SOURCE_ROW_NUMBER":"448744","EVENT_NO":"4455934","INSPECTION_BEGIN_DT":"12/15/2017","INSPECTION_END_DT":"12/15/2017","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8","SUM_TOTAL_ON_SITE_HOURS":"4","sourceDate":"2017-12-15"},{"SOURCE_ROW_NUMBER":"562450","EVENT_NO":"4455251","INSPECTION_BEGIN_DT":"10/12/2017","INSPECTION_END_DT":"12/18/2017","ACTIVITY_CODE":"E17","ACTIVITY":"Special Emphasis Programs","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"14.5","SUM_TOTAL_ON_SITE_HOURS":"4","sourceDate":"2017-10-12"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":84,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2018-Q2":{"hours":51229,"employees":82,"production":68972},"2018-Q1":{"hours":50521,"employees":72,"production":76216},"2017-Q4":{"hours":50521,"employees":72,"production":85594},"2017-Q3":{"hours":44451,"employees":72,"production":104802},"2017-Q2":{"hours":49494,"employees":72,"production":99761},"2017-Q1":{"hours":49637,"employees":69,"production":130631},"2016-Q4":{"hours":50775,"employees":70,"production":130279},"2016-Q3":{"hours":45988,"employees":70,"production":147840},"2016-Q2":{"hours":43214,"employees":68,"production":144069},"2016-Q1":{"hours":43196,"employees":66,"production":120488},"2015-Q4":{"hours":45234,"employees":77,"production":130940},"2015-Q3":{"hours":32687,"employees":87,"production":55109}},"recentRecords":[]},{"id":"msha-mine-production-yearly","name":"Mine Employment and Production — Yearly","domains":["production","safety","compliance"],"products":["annual trend","backfill","quarterly reconciliation"],"rowCount":24,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2009":{"hours":9247,"employees":15,"production":15440},"2010":{"hours":75726,"employees":30,"production":151370},"2011":{"hours":181139,"employees":77,"production":426117},"2012":{"hours":180946,"employees":82,"production":492045},"2013":{"hours":14496,"employees":19,"production":6560},"2014":{"hours":77250,"employees":37,"production":182536},"2015":{"hours":129433,"employees":79,"production":270340},"2016":{"hours":183173,"employees":69,"production":542676},"2017":{"hours":194103,"employees":71,"production":420788},"2018":{"hours":101750,"employees":77,"production":145188}},"recentRecords":[]},{"id":"msha-mines","name":"Mines","domains":["identity","production","logistics"],"products":["mine identity","status","commodity","location","operator and controller"],"rowCount":1,"firstDate":null,"lastDate":null,"metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-noise-samples","name":"Noise Samples","domains":["health","safety","equipment"],"products":["hearing exposure","machine and manufacturer patterns","occupation coverage"],"rowCount":218,"firstDate":"2010-05-27","lastDate":"2018-04-16","metrics":{"recentRows":0,"doseOver100":37,"actDoseTotal":15068,"pelDoseTotal":11603},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"105203","EVENT_NO":"4453702","SURVEY_DATE":"04/16/2018","OCCUPATION_CD_DESC":"LONGWALL(RETURN-SIDE FACE WORKER)","MACHINE_CD":"40","MANUFACTURER_CD":"039","ACT_DOSE_85":"48","PEL_DOSE_90":"21","SURVEY_TYPE":"I","sourceDate":"2018-04-16"},{"SOURCE_ROW_NUMBER":"105202","EVENT_NO":"4453702","SURVEY_DATE":"04/16/2018","OCCUPATION_CD_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","MACHINE_CD":"37","MANUFACTURER_CD":"058","ACT_DOSE_85":"77","PEL_DOSE_90":"51","SURVEY_TYPE":"I","sourceDate":"2018-04-16"},{"SOURCE_ROW_NUMBER":"105201","EVENT_NO":"4453702","SURVEY_DATE":"04/16/2018","OCCUPATION_CD_DESC":"SCOOP CAR OPERATOR","MACHINE_CD":"38","MANUFACTURER_CD":"098","ACT_DOSE_85":"61","PEL_DOSE_90":"28","SURVEY_TYPE":"I","sourceDate":"2018-04-16"},{"SOURCE_ROW_NUMBER":"105200","EVENT_NO":"4453702","SURVEY_DATE":"04/16/2018","OCCUPATION_CD_DESC":"ELECTRICIAN","MACHINE_CD":"40","MANUFACTURER_CD":"119","ACT_DOSE_85":"38","PEL_DOSE_90":"25","SURVEY_TYPE":"I","sourceDate":"2018-04-16"},{"SOURCE_ROW_NUMBER":"105199","EVENT_NO":"4453702","SURVEY_DATE":"04/16/2018","OCCUPATION_CD_DESC":"SECTION FOREMAN","MACHINE_CD":"40","MANUFACTURER_CD":"119","ACT_DOSE_85":"44","PEL_DOSE_90":"22","SURVEY_TYPE":"I","sourceDate":"2018-04-16"},{"SOURCE_ROW_NUMBER":"105232","EVENT_NO":"4454804","SURVEY_DATE":"03/13/2018","OCCUPATION_CD_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","MACHINE_CD":"27","MANUFACTURER_CD":"058","ACT_DOSE_85":"68","PEL_DOSE_90":"51","SURVEY_TYPE":"I","sourceDate":"2018-03-13"},{"SOURCE_ROW_NUMBER":"105231","EVENT_NO":"4454804","SURVEY_DATE":"03/13/2018","OCCUPATION_CD_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","MACHINE_CD":"37","MANUFACTURER_CD":"058","ACT_DOSE_85":"92","PEL_DOSE_90":"68","SURVEY_TYPE":"I","sourceDate":"2018-03-13"},{"SOURCE_ROW_NUMBER":"105230","EVENT_NO":"4454804","SURVEY_DATE":"03/13/2018","OCCUPATION_CD_DESC":"CONTINUOUS MINER OPERATOR","MACHINE_CD":"06","MANUFACTURER_CD":"058","ACT_DOSE_85":"78","PEL_DOSE_90":"60","SURVEY_TYPE":"I","sourceDate":"2018-03-13"},{"SOURCE_ROW_NUMBER":"105229","EVENT_NO":"4454804","SURVEY_DATE":"03/13/2018","OCCUPATION_CD_DESC":"ROOF BOLTER (TWIN HEAD) (RETURN SIDE)","MACHINE_CD":"30","MANUFACTURER_CD":"039","ACT_DOSE_85":"98","PEL_DOSE_90":"80","SURVEY_TYPE":"I","sourceDate":"2018-03-13"},{"SOURCE_ROW_NUMBER":"105228","EVENT_NO":"4454804","SURVEY_DATE":"03/13/2018","OCCUPATION_CD_DESC":"ROOF BOLTER (TWIN HEAD) (INTAKE SIDE)","MACHINE_CD":"30","MANUFACTURER_CD":"039","ACT_DOSE_85":"111","PEL_DOSE_90":"97","SURVEY_TYPE":"I","sourceDate":"2018-03-13"},{"SOURCE_ROW_NUMBER":"105237","EVENT_NO":"4454804","SURVEY_DATE":"01/10/2018","OCCUPATION_CD_DESC":"SECTION FOREMAN","MACHINE_CD":"40","MANUFACTURER_CD":"119","ACT_DOSE_85":"32","PEL_DOSE_90":"18","SURVEY_TYPE":"I","sourceDate":"2018-01-10"},{"SOURCE_ROW_NUMBER":"105236","EVENT_NO":"4454804","SURVEY_DATE":"01/10/2018","OCCUPATION_CD_DESC":"ELECTRICIAN","MACHINE_CD":"40","MANUFACTURER_CD":"119","ACT_DOSE_85":"26","PEL_DOSE_90":"13","SURVEY_TYPE":"I","sourceDate":"2018-01-10"}]},{"id":"msha-quartz-samples","name":"Quartz Samples — Coal","domains":["health","safety"],"products":["quartz exposure trends","occupation context","applicable-rule linkage"],"rowCount":79,"firstDate":"2009-12-07","lastDate":"2018-04-16","metrics":{"recentRows":0,"voidSamples":11,"maxQuartzPct":17.7,"validSamples":68,"quartzPctTotal":449.3},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"94108","CASSETTE_NO":"58333323","SAMPLE_DT":"04/16/2018","QUARTZ_PCT":"05.1","QUARTZ_MICROGRAMS":"13","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2018-04-16"},{"SOURCE_ROW_NUMBER":"158749","CASSETTE_NO":"58287242","SAMPLE_DT":"03/05/2018","QUARTZ_PCT":"05.2","QUARTZ_MICROGRAMS":"7","OCC_CODE_DESC":"ROOF BOLTER (TWIN HEAD) (RETURN SIDE)","SAMPLE_TYPE_DESC":"NON DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2018-03-05"},{"SOURCE_ROW_NUMBER":"931","CASSETTE_NO":"58287247","SAMPLE_DT":"03/05/2018","QUARTZ_PCT":"05.1","QUARTZ_MICROGRAMS":"22","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2018-03-05"},{"SOURCE_ROW_NUMBER":"136781","CASSETTE_NO":"58288490","SAMPLE_DT":"01/10/2018","QUARTZ_PCT":"01.5","QUARTZ_MICROGRAMS":"4","OCC_CODE_DESC":"OCCUPATION CODE NOT FOUND","SAMPLE_TYPE_DESC":"DESIGNATED AREA","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2018-01-10"},{"SOURCE_ROW_NUMBER":"86933","CASSETTE_NO":"58287445","SAMPLE_DT":"01/10/2018","QUARTZ_PCT":"01.7","QUARTZ_MICROGRAMS":"12","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2018-01-10"},{"SOURCE_ROW_NUMBER":"10979","CASSETTE_NO":"58288494","SAMPLE_DT":"01/10/2018","QUARTZ_PCT":"02.7","QUARTZ_MICROGRAMS":"19","OCC_CODE_DESC":"OCCUPATION CODE NOT FOUND","SAMPLE_TYPE_DESC":"DESIGNATED AREA","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2018-01-10"},{"SOURCE_ROW_NUMBER":"127013","CASSETTE_NO":"58269343","SAMPLE_DT":"11/28/2017","QUARTZ_PCT":"02.5","QUARTZ_MICROGRAMS":"13","OCC_CODE_DESC":"OCCUPATION CODE NOT FOUND","SAMPLE_TYPE_DESC":"DESIGNATED AREA","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2017-11-28"},{"SOURCE_ROW_NUMBER":"119283","CASSETTE_NO":"58269338","SAMPLE_DT":"11/28/2017","QUARTZ_PCT":"06.0","QUARTZ_MICROGRAMS":"15","OCC_CODE_DESC":"ROOF BOLTER (TWIN HEAD) (RETURN SIDE)","SAMPLE_TYPE_DESC":"NON DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2017-11-28"},{"SOURCE_ROW_NUMBER":"16499","CASSETTE_NO":"58269336","SAMPLE_DT":"11/28/2017","QUARTZ_PCT":"04.5","QUARTZ_MICROGRAMS":"19","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2017-11-28"},{"SOURCE_ROW_NUMBER":"82745","CASSETTE_NO":"58287544","SAMPLE_DT":"11/20/2017","QUARTZ_PCT":"02.9","QUARTZ_MICROGRAMS":"7","OCC_CODE_DESC":"OCCUPATION CODE NOT FOUND","SAMPLE_TYPE_DESC":"DESIGNATED AREA","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2017-11-20"},{"SOURCE_ROW_NUMBER":"56263","CASSETTE_NO":"58287524","SAMPLE_DT":"11/20/2017","QUARTZ_PCT":"05.7","QUARTZ_MICROGRAMS":"14","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2017-11-20"},{"SOURCE_ROW_NUMBER":"55623","CASSETTE_NO":"58287545","SAMPLE_DT":"11/20/2017","QUARTZ_PCT":"03.4","QUARTZ_MICROGRAMS":"11","OCC_CODE_DESC":"OCCUPATION CODE NOT FOUND","SAMPLE_TYPE_DESC":"DESIGNATED AREA","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2017-11-20"}]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":1062,"firstDate":"2009-07-08","lastDate":"2018-06-07","metrics":{"ss":239,"amountDue":257551,"contested":15,"amountPaid":146493.47,"recentRows":0,"section104d":1,"unterminated":4,"proposedPenalty":302710},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1166611","VIOLATION_NO":"9131512","VIOLATION_ISSUE_DT":"06/07/2018","SIG_SUB":"N","PART_SECTION":"75.403","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"06/07/2018","PROPOSED_PENALTY":"691","AMOUNT_DUE":"691","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2018-06-07"},{"SOURCE_ROW_NUMBER":"1166610","VIOLATION_NO":"9131511","VIOLATION_ISSUE_DT":"06/07/2018","SIG_SUB":"N","PART_SECTION":"75.403","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"06/07/2018","PROPOSED_PENALTY":"691","AMOUNT_DUE":"691","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2018-06-07"},{"SOURCE_ROW_NUMBER":"1166609","VIOLATION_NO":"8400947","VIOLATION_ISSUE_DT":"06/06/2018","SIG_SUB":"N","PART_SECTION":"75.220(a)(1)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"06/06/2018","PROPOSED_PENALTY":"243","AMOUNT_DUE":"243","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2018-06-06"},{"SOURCE_ROW_NUMBER":"1166605","VIOLATION_NO":"8321768","VIOLATION_ISSUE_DT":"06/01/2018","SIG_SUB":"N","PART_SECTION":"75.403","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"06/04/2018","PROPOSED_PENALTY":"208","AMOUNT_DUE":"208","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2018-06-01"},{"SOURCE_ROW_NUMBER":"1166604","VIOLATION_NO":"9134600","VIOLATION_ISSUE_DT":"05/31/2018","CIT_ORD_SAFE":"Order","NO_AFFECTED":"0","TERMINATION_DT":"06/26/2018","CONTESTED_IND":"N","sourceDate":"2018-05-31"},{"SOURCE_ROW_NUMBER":"1166466","VIOLATION_NO":"9134764","VIOLATION_ISSUE_DT":"05/29/2018","SIG_SUB":"N","PART_SECTION":"75.523-3(c)(2)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/30/2018","PROPOSED_PENALTY":"208","AMOUNT_DUE":"208","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2018-05-29"},{"SOURCE_ROW_NUMBER":"1166465","VIOLATION_NO":"9134763","VIOLATION_ISSUE_DT":"05/29/2018","SIG_SUB":"N","PART_SECTION":"75.523-3(c)(2)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"06/06/2018","PROPOSED_PENALTY":"208","AMOUNT_DUE":"208","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2018-05-29"},{"SOURCE_ROW_NUMBER":"1166464","VIOLATION_NO":"9134762","VIOLATION_ISSUE_DT":"05/24/2018","SIG_SUB":"N","PART_SECTION":"75.312(c)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/29/2018","PROPOSED_PENALTY":"138","AMOUNT_DUE":"138","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2018-05-24"},{"SOURCE_ROW_NUMBER":"1166428","VIOLATION_NO":"8301581","VIOLATION_ISSUE_DT":"05/24/2018","SIG_SUB":"N","PART_SECTION":"75.517","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/24/2018","PROPOSED_PENALTY":"1031","AMOUNT_DUE":"800","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2018-05-24"},{"SOURCE_ROW_NUMBER":"1166461","VIOLATION_NO":"9131950","VIOLATION_ISSUE_DT":"05/22/2018","SIG_SUB":"N","PART_SECTION":"75.1914(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/23/2018","PROPOSED_PENALTY":"1312","AMOUNT_DUE":"525","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2018-05-22"},{"SOURCE_ROW_NUMBER":"1166460","VIOLATION_NO":"9131949","VIOLATION_ISSUE_DT":"05/22/2018","SIG_SUB":"N","PART_SECTION":"75.342(a)(4)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/22/2018","PROPOSED_PENALTY":"264","AMOUNT_DUE":"264","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2018-05-22"},{"SOURCE_ROW_NUMBER":"1166459","VIOLATION_NO":"9131948","VIOLATION_ISSUE_DT":"05/09/2018","SIG_SUB":"N","PART_SECTION":"75.351(n)(3)(i)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/09/2018","PROPOSED_PENALTY":"208","AMOUNT_DUE":"208","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2018-05-09"}]}],"safety":{"href":"/api/v1/mines/1519418/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/1519418/silica","description":"Dedicated silica records, measurements, sample status and trends. Defaults to the snapshot year; use year=all for history."},"externalContext":{"eia":null,"title30":{"snapshot":{"chapterCount":6,"featuredSectionCount":100,"latestAmendedOn":"2026-08-14","latestIssueDate":"2026-08-14","partCount":206,"sectionCount":5954,"upToDateAsOf":"2026-08-19"},"regulations":[{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.403","heading":"Maintenance of incombustible content of rock dust.","id":"75.403","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-E/section-75.403","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"E","subpartHeading":"Subpart E—Combustible Materials and Rock Dusting","text":"Where rock dust is required to be applied, it shall be distributed upon the top, floor, and sides of all underground areas of a coal mine and maintained in such quantities that the incombustible content of the combined coal dust, rock dust, and other dust shall be not less than 80 percent. Where methane is present in any ventilating current, the percent of incombustible content of such combined dust shall be increased 0.4 percent for each 0.1 percent of methane.\n\n[75 FR 57857, Sept. 23, 2010; 76 FR 35978, June 21, 2011]","occurrenceCount":3},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.220","heading":"Roof control plan.","id":"75.220","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-C/section-75.220","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"C","subpartHeading":"Subpart C—Roof Support","text":"(a)(1) Each mine operator shall develop and follow a roof control plan, approved by the District Manager, that is suitable to the prevailing geological conditions, and the mining system to be used at the mine. Additional measures shall be taken to protect persons if unusual hazards are encountered.\n\n(2) The proposed roof control plan and any revisions to the plan shall be submitted, in writing, to the District Manager. When revisions to a roof control plan are proposed, only the revised pages need to be submitted unless otherwise specified by the District Manager.\n\n(b)(1) The mine operator will be notified in writing of the approval or denial of approval of a proposed roof control plan or proposed revision.\n\n(2) When approval of a proposed plan or revision is denied, the deficiencies of the plan or revision and recommended changes will be specified and the mine operator will be afforded an opportunity to discuss the deficiencies and changes with the District Manager.\n\n(3) Before new support materials, devices or systems other than roof bolts and accessories, are used as the only means of roof support, the District Manager may require that their effectiveness be demonstrated by experimental installations.\n\n(c) No proposed roof control plan or revision to a roof control plan shall be implemented before it is approved.\n\n(d) Before implementing an approved revision to a roof control plan, all persons who are affected by the revision shall be instructed in its provisions.\n\n(e) The approved roof control plan and any revisions shall be available to the miners and representative of miners at the mine.\n\n[53 FR 2375, Jan. 27, 1988; 53 FR 11395, Apr. 6, 1988, as amended at 60 FR 33723, June 29, 1995; 71 FR 16668, Apr. 3, 2006]","occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.523-3","heading":"Automatic emergency-parking brakes.","id":"75.523-3","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.523-3","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"F","subpartHeading":"Subpart F—Electrical Equipment—General","text":"(a) Except for personnel carriers, rubber-tired, self-propelled electric haulage equipment used in the active workings of underground coal mines shall be equipped with automatic emergency-parking brakes in accordance with the following schedule.\n\n(1) On and after May 23, 1989—\n\n(i) All new equipment ordered; and\n\n(ii) All equipment originally furnished with or retrofitted with automatic emergency-parking brakes which meet the requirements of this section.\n\n(2) On and after May 23, 1991, all other equipment.\n\n(b) Automatic emergency-parking brakes shall—\n\n(1) Be activated immediately by the emergency deenergization device required by 30 CFR 75.523-1 and 75.523-2;\n\n(2) Engage automatically within 5.0 seconds when the equipment is deenergized;\n\n(3) Safely bring the equipment when fully loaded to a complete stop on the maximum grade on which it is operated;\n\n(4) Hold the equipment stationary despite any contraction of brake parts, exhaustion of any non-mechanical source of energy, or leakage; and\n\n(5) Release only by a manual control that does not operate any other equipment function.\n\n(c) Automatic emergency-parking brakes shall include a means in the equipment operator's compartment to—\n\n(1) Apply the brakes manually without deenergizing the equipment; and\n\n(2) Release and reengage the brakes without energizing the equipment.\n\n(d) On and after November 24, 1989, rubber-tired, self-propelled electric face equipment not covered by paragraph (a) of this section shall be equipped with a means incorporated on the equipment and operable from each tramming station to hold the equipment stationary—\n\n(1) On the maximum grade on which it is operated; and\n\n(2) Despite any contraction of components, exhaustion of any non-mechanical source of energy, or leakage.\n\n(e) The brake systems required by paragraphs (a) or (d) of this section shall be applied when the equipment operator is not at the controls of the equipment, except during movement of disabled equipment.\n\n[54 FR 12412, Mar. 24, 1989]","occurrenceCount":2},{"chapter":"I","heading":"Main mine fan examinations and records.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.312","part":"75","subchapter":"O","subpart":"D","id":"75.312","citation":"30 CFR 75.312","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.517","heading":"Power wires and cables; insulation and protection.","id":"75.517","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.517","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"F","subpartHeading":"Subpart F—Electrical Equipment—General","text":"[Statutory Provisions]\n\nPower wires and cables, except trolley wires, trolley feeder wires, and bare signal wires, shall be insulated adequately and fully protected.","occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.1914","heading":"Maintenance of diesel-powered equipment.","id":"75.1914","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-T/section-75.1914","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"T","subpartHeading":"Subpart T—Diesel-Powered Equipment","text":"(a) Diesel-powered equipment shall be maintained in approved and safe condition or removed from service.\n\n(b) Maintenance and repairs of approved features and those features required by §§ 75.1909 and 75.1910 on diesel-powered equipment shall be made only by a person qualified under § 75.1915.\n\n(c) The water scrubber system on diesel-powered equipment shall be drained and flushed, by a person who is trained to perform this task, at least once on each shift in which the equipment is operated.\n\n(d) The intake air filter on diesel-powered equipment shall be replaced or serviced, by a person who is trained to perform this task, when the intake air pressure drop device so indicates or when the engine manufacturer's maximum allowable air pressure drop level is exceeded.\n\n(e) Mobile diesel-powered equipment that is to be used during a shift shall be visually examined by the equipment operator before being placed in operation. Equipment defects affecting safety shall be reported promptly to the mine operator.\n\n(f) All diesel-powered equipment shall be examined and tested weekly by a person qualified under § 75.1915.\n\n(1) Examinations and tests shall be conducted in accordance with approved checklists and manufacturers' maintenance manuals.\n\n(2) Persons performing weekly examinations and tests of diesel-powered equipment under this paragraph shall make a record when the equipment is not in approved or safe condition. The record shall include the equipment that is not in approved or safe condition, the defect found, and the corrective action taken.\n\n(g) Undiluted exhaust emissions of diesel engines in diesel-powered equipment approved under part 36 and heavy-duty nonpermissible diesel-powered equipment as defined in § 75.1908(a) in use in underground coal mines shall be tested and evaluated weekly by a person who is trained to perform this task. The mine operator shall develop and implement written standard operating procedures for such testing and evaluation that specify the following:\n\n(1) The method of achieving a repeatable loaded engine operating condition for each type of equipment;\n\n(2) Sampling and analytical methods (including calibration of instrumentation) that are capable of accurately detecting carbon monoxide in the expected concentrations;\n\n(3) The method of evaluation and interpretation of the results;\n\n(4) The concentration or changes in concentration of carbon monoxide that will indicate a change in engine performance. Carbon monoxide concentration shall not exceed 2500 parts per million; and\n\n(5) The maintenance of records necessary to track engine performance.\n\n(h) Recordkeeping. Records required by paragraphs (f)(2) and (g)(5) shall be—\n\n(1) Recorded in a secure book that is not susceptible to alteration, or recorded electronically in a computer system that is secure and not susceptible to alteration; and\n\n(2) Retained at a surface location at the mine for at least 1 year and made available for inspection by an authorized representative of the Secretary and by miners' representatives.\n\n(i) Diesel-powered equipment must be maintained in accordance with this part as of November 25, 1997.","occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.342","heading":"Methane monitors.","id":"75.342","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.342","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"D","subpartHeading":"Subpart D—Ventilation","text":"(a)(1) MSHA approved methane monitors shall be installed on all face cutting machines, continuous miners, longwall face equipment, loading machines, and other mechanized equipment used to extract or load coal within the working place.\n\n(2) The sensing device for methane monitors on longwall shearing machines shall be installed at the return air end of the longwall face. An additional sensing device also shall be installed on the longwall shearing machine, downwind and as close to the cutting head as practicable. An alternative location or locations for the sensing device required on the longwall shearing machine may be approved in the ventilation plan.\n\n(3) The sensing devices of methane monitors shall be installed as close to the working face as practicable.\n\n(4) Methane monitors shall be maintained in permissible and proper operating condition and shall be calibrated with a known air-methane mixture at least once every 31 days. To assure that methane monitors are properly maintained and calibrated, the operator shall:\n\n(i) Use persons properly trained in the maintenance, calibration, and permissibility of methane monitors to calibrate and maintain the devices.\n\n(ii) Maintain a record of all calibration tests of methane monitors. Records shall be maintained in a secure book that is not susceptible to alteration or electronically in a computer system so as to be secure and not susceptible to alteration.\n\n(iii) Retain the record of calibration tests for 1 year from the date of the test. Records shall be retained at a surface location at the mine and made available for inspection by authorized representatives of the Secretary and the representative of miners.\n\n(b)(1) When the methane concentration at any methane monitor reaches 1.0 percent the monitor shall give a warning signal.\n\n(2) The warning signal device of the methane monitor shall be visible to a person who can deenergize electric equipment or shut down diesel-powered equipment on which the monitor is mounted.\n\n(c) The methane monitor shall automatically deenergize electric equipment or shut down diesel-powered equipment on which it is mounted when—\n\n(1) The methane concentration at any methane monitor reaches 2.0 percent; or\n\n(2) The monitor is not operating properly.\n\n[61 FR 9829, Mar. 11, 1996, as amended at 61 FR 55527, Oct. 25, 1996]","occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.351","heading":"Atmospheric monitoring systems.","id":"75.351","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.351","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"D","subpartHeading":"Subpart D—Ventilation","text":"(a) AMS operation. Whenever personnel are underground and an AMS is used to fulfill the requirements of §§ 75.323(d)(1)(ii), 75.340(a)(1)(ii), 75.340(a)(2)(ii), 75.350(b), 75.350(d), or 75.362(f), the AMS must be operating and a designated AMS operator must be on duty at a location on the surface of the mine where audible and visual signals from the AMS must be seen or heard and the AMS operator can promptly respond to these signals.\n\n(b) Designated surface location and AMS operator. When an AMS is used to comply with §§ 75.323(d)(1)(ii), 75.340(a)(1)(ii), 75.340(a)(2)(ii), 75.350(b), 75.350(d), or 75.362(f), the following requirements apply:\n\n(1) The mine operator must designate a surface location at the mine where signals from the AMS will be received and two-way voice communication is maintained with each working section, with areas where mechanized mining equipment is being installed or removed, and with other areas designated in the approved emergency evacuation and firefighting program of instruction (§ 75.1502).\n\n(2) The mine operator must designate an AMS operator to monitor and promptly respond to all AMS signals. The AMS operator must have as a primary duty the responsibility to monitor the malfunction, alert and alarm signals of the AMS, and to notify appropriate personnel of these signals. In the event of an emergency, the sole responsibility of the AMS operator shall be to respond to the emergency.\n\n(3) A map or schematic must be provided at the designated surface location that shows the locations and type of AMS sensor at each location, and the intended air flow direction at these locations. This map or schematic must be updated within 24 hours of any change in this information.\n\n(4) The names of the designated AMS operators and other appropriate personnel, including the designated person responsible for initiating an emergency mine evacuation under § 75.1501, and the method to contact these persons, must be provided at the designated surface location.\n\n(c) Minimum operating requirements. AMSs used to comply with §§ 75.323(d)(1)(ii), 75.340(a)(1)(ii), 75.340(a)(2)(ii), 75.350(b), 75.350(d), or 75.362(f) must:\n\n(1) Automatically provide visual and audible signals at the designated surface location for any interruption of circuit continuity and any electrical malfunction of the system. These signals must be of sufficient magnitude to be seen or heard by the AMS operator.\n\n(2) Automatically provide visual and audible signals at the designated surface location when the carbon monoxide concentration or methane concentration at any sensor reaches the alert level as specified in § 75.351(i). These signals must be of sufficient magnitude to be seen or heard by the AMS operator.\n\n(3) Automatically provide visual and audible signals at the designated surface location distinguishable from alert signals when the carbon monoxide, smoke, or methane concentration at any sensor reaches the alarm level as specified in § 75.351(i). These signals must be of sufficient magnitude to be seen or heard by the AMS operator.\n\n(4) Automatically provide visual and audible signals at all affected working sections and at all affected areas where mechanized mining equipment is being installed or removed when the carbon monoxide, smoke, or methane concentration at any sensor reaches the alarm level as specified in § 75.351(i). These signals must be of sufficient magnitude to be seen or heard by miners working at these locations. Methane signals must be distinguishable from other signals.\n\n(5) Automatically provide visual and audible signals at other locations as specified in Mine Emergency Evacuation and Firefighting Program of Instruction (§ 75.1502) when the carbon monoxide, smoke, or methane concentration at any sensor reaches the alarm level as specified in § 75.351(i). These signals must be seen or heard by miners working at these locations. Methane alarms must be distinguishable from other signals.\n\n(6) Identify at the designated surface location the operational status of all sensors.\n\n(7) Automatically provide visual and audible alarm signals at the designated surface location, at all affected working sections, and at all affected areas where mechanized mining equipment is being installed or removed when the carbon monoxide level at any two consecutive sensors alert at the same time. These signals must be seen or heard by the AMS operator and miners working at these locations.\n\n(d) Location and installation of AMS sensors. (1) All AMS sensors, as specified in §§ 75.351(e) through 75.351(h), must be located such that measurements are representative of the mine atmosphere in these locations.\n\n(2) Carbon monoxide or smoke sensors must be installed near the center in the upper third of the entry, in a location that does not expose personnel working on the system to unsafe conditions. Sensors must not be located in abnormally high areas or in other locations where air flow patterns do not permit products of combustion to be carried to the sensors.\n\n(3) Methane sensors must be installed near the center of the entry, at least 12 inches from the roof, ribs, and floor, in a location that would not expose personnel working on the system to unsafe conditions.\n\n(e) Location of sensors-belt air course. (1) In addition to the requirements of paragraph (d) of this section, any AMS used to monitor belt air courses under § 75.350(b) must have approved sensors to monitor for carbon monoxide at the following locations:\n\n(i) At or near the working section belt tailpiece in the air stream ventilating the belt entry. In longwall mining systems the sensor must be located upwind in the belt entry at a distance no greater than 150 feet from the mixing point where intake air is mixed with the belt air at or near the tailpiece;\n\n(ii) No more than 50 feet upwind from the point where the belt air course is combined with another air course or splits into multiple air courses;\n\n(iii) At intervals not to exceed 1,000 feet along each belt entry. However, in areas along each belt entry where air velocities are between 50 and 100 feet per minute, spacing of sensors must not exceed 500 feet. In areas along each belt entry where air velocities are less than 50 feet per minute, the sensor spacing must not exceed 350 feet;\n\n(iv) Not more than 100 feet downwind of each belt drive unit, each tailpiece, transfer point, and each belt take-up. If the belt drive, tailpiece, and/or take-up for a single transfer point are installed together in the same air course, and the distance between the units is less than 100 feet, they may be monitored with one sensor downwind of the last component. If the distance between the units exceeds 100 feet, additional sensors are required downwind of each belt drive unit, each tailpiece, transfer point, and each belt take-up; and\n\n(v) At other locations in any entry that is part of the belt air course as required and specified in the mine ventilation plan.\n\n(2) Smoke sensors must be installed to monitor the belt entry under § 75.350(b) at the following locations:\n\n(i) At or near the working section belt tailpiece in the air stream ventilating the belt entry. In longwall mining systems the sensor must be located upwind in the belt entry at a distance no greater than 150 feet from the mixing point where intake air is mixed with the belt air at or near the tailpiece;\n\n(ii) Not more than 100 feet downwind of each belt drive unit, each tailpiece transfer point, and each belt take-up. If the belt drive, tailpiece, and/or take-up for a single transfer point are installed together in the same air course, and the distance between the units is less than 100 feet, they may be monitored with one sensor downwind of the last component. If the distance between the units exceeds 100 feet, additional sensors are required downwind of each belt drive unit, each tailpiece, transfer point, and each belt take-up; and\n\n(iii) At intervals not to exceed 3,000 feet along each belt entry.\n\n(iv) This provision shall be effective one year after the Secretary has determined that a smoke sensor is available to reliably detect fire in underground coal mines.\n\n(f) Locations of sensors—the primary escapeway. When used to monitor the primary escapeway under § 75.350(b)(4), carbon monoxide or smoke sensors must be located in the primary escapeway within 500 feet of the working section and areas where mechanized mining equipment is being installed or removed. In addition, another sensor must be located within 500 feet inby the beginning of the panel. The point-feed sensor required by § 75.350(d)(1) may be used as the sensor at the beginning of the panel if it is located within 500 feet inby the beginning of the panel.\n\n(g) Location of sensors—return air splits. (1) If used to monitor return air splits under § 75.362(f), a methane sensor must be installed in the return air split between the last working place, longwall or shortwall face ventilated by that air split, and the junction of the return air split with another air split, seal, or worked out area.\n\n(2) If used to monitor a return air split under § 75.323(d)(1)(ii), the methane sensors must be installed at the following locations:\n\n(i) In the return air course opposite the section loading point, or, if exhausting auxiliary fan(s) are used, in the return air course no closer than 300 feet downwind from the fan exhaust and at a point opposite or immediately outby the section loading point; and\n\n(ii) Immediately upwind from the location where the return air split meets another air split or immediately upwind of the location where an air split is used to ventilate seals or worked-out areas.\n\n(h) Location of sensors—electrical installations. When monitoring the intake air ventilating underground transformer stations, battery charging stations, substations, rectifiers, or water pumps under § 75.340(a)(1)(ii) or § 75.340(a)(2)(ii), at least one sensor must be installed to monitor the mine atmosphere for carbon monoxide or smoke, located downwind and not greater than 50 feet from the electrical installation being monitored.\n\n(i) Establishing alert and alarm levels. An AMS installed in accordance with the following paragraphs must initiate alert and alarm signals at the specified levels, as indicated:\n\n(1) For § 75.323(d)(1)(ii) alarm at 1.5% methane.\n\n(2) For §§ 75.340(a)(1)(ii), 75.340(a)(2)(ii), 75.350(b), and 75.350(d), alert at 5 ppm carbon monoxide above the ambient level and alarm at 10 ppm carbon monoxide above the ambient level when carbon monoxide sensors are used; and alarm at a smoke optical density of 0.022 per meter when smoke sensors are used. Reduced alert and alarm settings approved by the district manager may be required for carbon monoxide sensors identified in the mine ventilation plan, § 75.371(nn).\n\n(3) For § 75.362(f), alert at 1.0% methane and alarm at 1.5% methane.\n\n(j) Establishing carbon monoxide ambient levels. Carbon monoxide ambient levels and the means to determine these levels must be approved in the mine ventilation plan (§ 75.371(hh)) for monitors installed in accordance with §§ 75.340(a)(1)(ii), 75.340(a)(2)(ii), 75.350(b), and 75.350(d).\n\n(k) Installation and maintenance. An AMS installed in accordance with §§ 75.323(d)(1)(ii), 75.340(a)(1)(ii), 75.340(a)(2)(ii), 75.350(b), 75.350(d), or 75.362(f) must be installed and maintained by personnel trained in the installation and maintenance of the system. The system must be maintained in proper operating condition.\n\n(l) Sensors. Sensors used to monitor for carbon monoxide, methane, and smoke must be either of a type listed and installed in accordance with the recommendations of a nationally recognized testing laboratory approved by the Secretary; or these sensors must be of a type, and installed in a manner, approved by the Secretary.\n\n(m) Time delays. When a demonstrated need exists, time delays may be incorporated into the AMS. These time delays must only be used to account for non-fire related carbon monoxide alert and alarm sensor signals. These time delays are limited to no more than three minutes. The use and length of any time delays, or other techniques or methods which eliminate or reduce the need for time delays, must be specified and approved in the mine ventilation plan.\n\n(n) Examination, testing, and calibration. (1) At least once each shift when belts are operated as part of a production shift, sensors used to detect carbon monoxide or smoke in accordance with §§ 75.350(b), and 75.350(d), and alarms installed in accordance with § 75.350(b) must be visually examined.\n\n(2) At least once every seven days, alarms for AMS installed in accordance with §§ 75.350(b), and 75.350(d) must be functionally tested for proper operation.\n\n(3) At intervals not to exceed 31 days—\n\n(i) Each carbon monoxide sensor installed in accordance with §§ 75.340(a)(1)(ii), 75.340(a)(2)(ii), 75.350(b), or 75.350(d) must be calibrated in accordance with the manufacturer's calibration specifications. Calibration must be done with a known concentration of carbon monoxide in air sufficient to activate the alarm;\n\n(ii) Each smoke sensor installed in accordance with §§ 75.340(a)(1)(ii), 75.340(a)(2)(ii), 75.350(b), or 75.350(d) must be functionally tested in accordance with the manufacturer's calibration specifications;\n\n(iii) Each methane sensor installed in accordance with §§ 75.323(d)(1)(ii) or 75.362(f) must be calibrated in accordance with the manufacturer's calibration specifications. Calibration must be done with a known concentration of methane in air sufficient to activate an alarm.\n\n(iv) If the alert or alarm signals will be activated during calibration of sensors, the AMS operator must be notified prior to and upon completion of calibration. The AMS operator must notify miners on affected working sections, areas where mechanized mining equipment is being installed or removed, or other areas designated in the approved emergency evacuation and firefighting program of instruction (§ 75.1502) when calibration will activate alarms and when calibration is completed.\n\n(4) Gases used for the testing and calibration of AMS sensors must be traceable to the National Institute of Standards and Technology reference standard for the specific gas. When these reference standards are not available for a specific gas, calibration gases must be traceable to an analytical standard which is prepared using a method traceable to the National Institute of Standards and Technology. Calibration gases must be within ±2.0 percent of the indicated gas concentration.\n\n(o) Recordkeeping. (1) When an AMS is used to comply with §§ 75.323(d)(1)(ii), 75.340(a)(1)(ii), 75.340(a)(2)(ii), 75.350(b), 75.350(d), or 75.362(f), individuals designated by the operator must make the following records by the end of the shift in which the following event(s) occur:\n\n(i) If an alert or alarm signal occurs, a record of the date, time, location and type of sensor, and the cause for the activation.\n\n(ii) If an AMS malfunctions, a record of the date, the extent and cause of the malfunction, and the corrective action taken to return the system to proper operation.\n\n(iii) A record of the seven-day tests of alert and alarm signals; calibrations; and maintenance of the AMS must be made by the person(s) performing these actions.\n\n(2) The person entering the record must include their name, date, and signature in the record.\n\n(3) The records required by this section must be kept either in a secure book that is not susceptible to alteration, or electronically in a computer system that is secure and not susceptible to alteration. These records must be maintained separately from other records and identifiable by a title, such as the ‘AMS log.’\n\n(p) Retention period. Records must be retained for at least one year at a surface location at the mine and made available for inspection by miners and authorized representatives of the Secretary.\n\n(q) Training. (1) All AMS operators must be trained annually in the proper operation of the AMS. This training must include the following subjects:\n\n(i) Familiarity with underground mining systems;\n\n(ii) Basic atmospheric monitoring system requirements;\n\n(iii) The mine emergency evacuation and firefighting program of instruction;\n\n(iv) The mine ventilation system including planned air directions;\n\n(v) Appropriate response to alert, alarm and malfunction signals;\n\n(vi) Use of mine communication systems including emergency notification procedures; and\n\n(vii) AMS recordkeeping requirements.\n\n(2) At least once every six months, all AMS operators must travel to all working sections.\n\n(3) A record of the content of training, the person conducting the training, and the date the training was conducted, must be maintained at the mine for at least one year by the mine operator.\n\n(r) Communications. When an AMS is used to comply with § 75.350(b), a two-way voice communication system required by § 75.1600 must be installed in an entry that is separate from the entry in which the AMS is installed no later than August 2, 2004. The two-way voice communication system may be installed in the entry where the intake sensors required by §§ 75.350(b)(4) or 75.350(d)(1) are installed.\n\n[69 FR 17527, Apr. 2, 2004, as amended at 73 FR 80612, Dec. 31, 2008]","occurrenceCount":1}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"1519418","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}