{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"4609496","name":"Mine No. 43","status":"Abandoned","status_date":"2026-08-19","mine_type":"Underground","coal_metal":"C","commodity":"Coal (Bituminous)","state":"WV","county":"Mcdowell","nearest_town":"Eckman","operator_id":"0075785","operator_name":"Twin State Mining, Inc.","controller_id":"M00106","controller_name":"Cleveland-Cliffs Inc","district":"C04","office":"Logan WV Field Office","employees":0,"latitude":37.395556,"longitude":-81.473889},"coverage":{"contributingSources":17,"registeredSources":20,"sourceRows":11553},"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":"4609496","name":"Mine No. 43"},"operator":{"type":"operator","id":"0075785","name":"Twin State Mining, Inc."},"controller":{"type":"controller","id":"M00106","name":"Cleveland-Cliffs Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00884","name":"William G  Skewes"},"object":{"type":"mine","id":"4609496","name":"Mine No. 43"},"validFrom":"2002-10-17","validTo":"2008-10-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4609496|C00884|2002-10-17|2008-10-19"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0063633","name":"Gregory  Jessee et al"},"object":{"type":"mine","id":"4609496","name":"Mine No. 43"},"validFrom":"2006-10-10","validTo":"2008-12-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4609496|0063633|2006-10-10|2008-12-04"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0081113","name":"ArcelorMittal"},"object":{"type":"mine","id":"4609496","name":"Mine No. 43"},"validFrom":"2008-10-20","validTo":"2020-12-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4609496|0081113|2008-10-20|2020-12-08"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0081113","name":"ArcelorMittal"},"object":{"type":"mine","id":"4609496","name":"Mine No. 43"},"validFrom":"2008-12-05","validTo":"2020-12-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4609496|0081113|2008-12-05|2020-12-08"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050923","name":"XMV, Inc."},"object":{"type":"mine","id":"4609496","name":"Mine No. 43"},"validFrom":"2014-10-01","validTo":"2021-11-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4609496|0050923|2014-10-01|2021-11-17"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0081113","name":"ArcelorMittal"},"object":{"type":"operator","id":"0050923","name":"XMV, Inc."},"validFrom":"2014-10-01","validTo":"2020-12-08","current":false,"derived":true,"evidenceMineId":"4609496","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4609496|0050923|2014-10-01|0081113|2008-10-20|12900"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00884","name":"William G  Skewes"},"object":{"type":"operator","id":"0050923","name":"XMV, Inc."},"validFrom":"2014-10-01","validTo":"2008-10-19","current":false,"derived":true,"evidenceMineId":"4609496","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4609496|0050923|2014-10-01|C00884|2002-10-17|50896"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00106","name":"Cleveland-Cliffs Inc"},"object":{"type":"mine","id":"4609496","name":"Mine No. 43"},"validFrom":"2020-12-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4609496|M00106|2020-12-09|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00106","name":"Cleveland-Cliffs Inc"},"object":{"type":"operator","id":"0050923","name":"XMV, Inc."},"validFrom":"2020-12-09","validTo":"2021-11-17","current":false,"derived":true,"evidenceMineId":"4609496","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4609496|0050923|2014-10-01|M00106|2020-12-09|104315"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0075785","name":"Twin State Mining, Inc."},"object":{"type":"mine","id":"4609496","name":"Mine No. 43"},"validFrom":"2021-11-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4609496|0075785|2021-11-18|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0063633","name":"Gregory  Jessee et al"},"object":{"type":"operator","id":"0075785","name":"Twin State Mining, Inc."},"validFrom":"2021-11-18","validTo":"2008-12-04","current":false,"derived":true,"evidenceMineId":"4609496","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4609496|0075785|2021-11-18|0063633|2006-10-10|8694"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0081113","name":"ArcelorMittal"},"object":{"type":"operator","id":"0075785","name":"Twin State Mining, Inc."},"validFrom":"2021-11-18","validTo":"2020-12-08","current":false,"derived":true,"evidenceMineId":"4609496","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4609496|0075785|2021-11-18|0081113|2008-12-05|12906"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00106","name":"Cleveland-Cliffs Inc"},"object":{"type":"operator","id":"0075785","name":"Twin State Mining, Inc."},"validFrom":"2021-11-18","validTo":null,"current":true,"derived":true,"evidenceMineId":"4609496","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4609496|0075785|2021-11-18|M00106|2020-12-09|104316"}}],"coverage":{"historyRecords":6,"edgeCount":13,"intervalAnomalies":3,"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":35,"firstDate":"2015-10-26","lastDate":"2022-12-21","metrics":{"daysLost":825,"injuries":27,"fatalities":0,"recentRows":11,"restrictedDays":133,"contractorRecords":2},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"132899","DOCUMENT_NO":"220223630003","ACCIDENT_DT":"12/21/2022","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 unintentional roof fall occurred 1 cross-cut inby spad 4203.  The fall measures approximately 20' long by 14' wide by 8' in height.","sourceDate":"2022-12-21"},{"SOURCE_ROW_NUMBER":"81501","DOCUMENT_NO":"220223610017","ACCIDENT_DT":"12/13/2022","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"MACHINERY","ACCIDENT_TYPE":"Caught in, under or between running or meshing objects","OCCUPATION":"Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)","NO_INJURIES":"1","DAYS_LOST":"67","NARRATIVE":"Injured employee reached with hand to straighten out a bent roof bolt EE was installing in the roof when EE mistakenly hit the rotation instead of the up pressure.  EE's glove was caught by the roof bolt and injured EE's right hand.","sourceDate":"2022-12-13"},{"SOURCE_ROW_NUMBER":"42719","DOCUMENT_NO":"220222800005","ACCIDENT_DT":"09/24/2022","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Caught in, under or between a moving and a stationary object","OCCUPATION":"Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech","NO_INJURIES":"1","DAYS_LOST":"73","NARRATIVE":"Employee was removing a canopy from a shuttle car, when it shifted and caught right ring finger near the tip, resulting in a laceration and fractured bone in the tip of the finger.","sourceDate":"2022-09-24"},{"SOURCE_ROW_NUMBER":"274973","DOCUMENT_NO":"220221190024","ACCIDENT_DT":"04/18/2022","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"HANDTOOLS (NONPOWERED)","ACCIDENT_TYPE":"Over-exertion NEC","OCCUPATION":"Master electrician","NO_INJURIES":"1","DAYS_LOST":"3","NARRATIVE":"The injured employee was working on the #1C/M on the South Mains #2 Unit, changing the left side ripper motor in the #4 heading.  The process of changing the motor requires a lot of physical movement and the use of small tools to aid in positioning.  While prying to move the motor in place the injured employee suffered pain in right shoulder.","sourceDate":"2022-04-18"},{"SOURCE_ROW_NUMBER":"262277","DOCUMENT_NO":"220221030020","ACCIDENT_DT":"04/01/2022","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"OTHER","ACCIDENT_TYPE":"Struck by... NEC","OCCUPATION":"Continuous miner operator, Coal mole operator","NO_INJURIES":"1","DAYS_LOST":"256","NARRATIVE":"The C/M operator was mining 4 right crosscut into #5 heading when car driver found injured employee at the boom of the miner suffering from head and face trauma.  The exact cause of the trauma is under investigation.","sourceDate":"2022-04-01"},{"SOURCE_ROW_NUMBER":"197499","DOCUMENT_NO":"220220350015","ACCIDENT_DT":"01/27/2022","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 unintentional roof fall has occurred in the face of the number 5 entry inby spad 3708, involving MMU 004-0 Continuous Miner. The fall area was approximately 10' wide, 15' long and 6' in height. the fall pulled 6 roof bolts.","sourceDate":"2022-01-27"},{"SOURCE_ROW_NUMBER":"158907","DOCUMENT_NO":"220212670016","ACCIDENT_DT":"09/13/2021","DEGREE_INJURY":"NO DYS AWY FRM WRK,NO RSTR ACT","CLASSIFICATION":"SLIP OR FALL OF PERSON","ACCIDENT_TYPE":"Fall onto or against objects","OCCUPATION":"Laborer, Bull gang,  Parts runner, Roustabout, Roof trimmer/scaler","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"Employee was walking along scoop and got stuck in the mud, lost balance and fell into the batteries of the scoop injuring ribs.","sourceDate":"2021-09-13"},{"SOURCE_ROW_NUMBER":"253581","DOCUMENT_NO":"220212790008","ACCIDENT_DT":"04/23/2021","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"SLIP OR FALL OF PERSON","ACCIDENT_TYPE":"Fall to the walkway or working surface","OCCUPATION":"Electrician, Lineman","NO_INJURIES":"1","DAYS_LOST":"68","NARRATIVE":"EE was walking to the power center from the feeder area, when EE caught EE's foot on a rock and fell twisting EE's lower back.  EE has started missing work from this injury.","sourceDate":"2021-04-23"},{"SOURCE_ROW_NUMBER":"42718","DOCUMENT_NO":"220210770012","ACCIDENT_DT":"03/10/2021","DEGREE_INJURY":"DAYS RESTRICTED ACTIVITY ONLY","CLASSIFICATION":"FALL OF ROOF OR BACK","ACCIDENT_TYPE":"Struck by falling object","OCCUPATION":"Continuous miner operator, Coal mole operator","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"Employee was operating the continuous miner and after backing from a cut, EE reached down to move the cable, when EE was struck by a piece of rock from the roof & rib. EE suffered bruising to the back and abdomen area.","sourceDate":"2021-03-10"},{"SOURCE_ROW_NUMBER":"94218","DOCUMENT_NO":"220210270012","ACCIDENT_DT":"01/20/2021","DEGREE_INJURY":"DAYS RESTRICTED ACTIVITY ONLY","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Over-exertion NEC","OCCUPATION":"Scoop car/Scooptram operator, Load/Haul/Dump (LHD) operator, Teletram operator","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"Employee is a scoop operator on the South Mains section. Employee was putting roof bolt plates on the bolter supply tray, as they turned, they heard a pop and felt pain in left knee.","sourceDate":"2021-01-20"},{"SOURCE_ROW_NUMBER":"42717","DOCUMENT_NO":"220210270011","ACCIDENT_DT":"01/20/2021","DEGREE_INJURY":"DAYS RESTRICTED ACTIVITY ONLY","CLASSIFICATION":"MACHINERY","ACCIDENT_TYPE":"Struck by... NEC","OCCUPATION":"Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"Employee is a Roof bolter operator on 2 Right Section, when they put a strap in place and rotated the bolt. The strap moved resulting in a cut to middle finger of right hand. The laceration was cleaned and closed with glue.","sourceDate":"2021-01-20"},{"SOURCE_ROW_NUMBER":"128554","DOCUMENT_NO":"220203520022","ACCIDENT_DT":"12/09/2020","DEGREE_INJURY":"DYS AWY FRM WRK & RESTRCTD ACT","CLASSIFICATION":"MACHINERY","ACCIDENT_TYPE":"Struck by flying object","OCCUPATION":"Electrician, Lineman","NO_INJURIES":"1","DAYS_LOST":"24","NARRATIVE":"Employee was cleaning the threads on a bolt with a wire wheel when one of the wires came off and struck EE in the left eye. The employee was wearing safety glasses and fellow employees in the area confirmed the use of glasses.","sourceDate":"2020-12-09"}]},{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"2026-08-19","lastDate":"2026-08-19","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":1257,"firstDate":"2015-06-11","lastDate":"2023-02-03","metrics":{"ss":222,"delinquent":1155,"recentRows":317,"paidPenalty":895160,"proposedPenalty":1104661.4,"currentAssessment":895160},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"2866812","VIOLATION_NO":"9569390","ISSUE_DT":"02/03/2023","CFR_STANDARD_CD":"75.1505(b)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"657.00","CURRENT_ASSESSMENT_AMT":"657.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-02-03"},{"SOURCE_ROW_NUMBER":"2866811","VIOLATION_NO":"9569389","ISSUE_DT":"02/03/2023","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"220.00","CURRENT_ASSESSMENT_AMT":"220.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-02-03"},{"SOURCE_ROW_NUMBER":"2866810","VIOLATION_NO":"9569385","ISSUE_DT":"02/01/2023","CFR_STANDARD_CD":"75.362(a)(2)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"980.00","CURRENT_ASSESSMENT_AMT":"980.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-02-01"},{"SOURCE_ROW_NUMBER":"2866809","VIOLATION_NO":"9569384","ISSUE_DT":"02/01/2023","CFR_STANDARD_CD":"75.370(a)(1)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"980.00","CURRENT_ASSESSMENT_AMT":"980.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-02-01"},{"SOURCE_ROW_NUMBER":"2866808","VIOLATION_NO":"9569383","ISSUE_DT":"02/01/2023","CFR_STANDARD_CD":"72.630(b)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"1585.00","CURRENT_ASSESSMENT_AMT":"1585.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-02-01"},{"SOURCE_ROW_NUMBER":"2866807","VIOLATION_NO":"9569382","ISSUE_DT":"02/01/2023","CFR_STANDARD_CD":"75.362(a)(2)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"182.00","CURRENT_ASSESSMENT_AMT":"182.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-02-01"},{"SOURCE_ROW_NUMBER":"2866819","VIOLATION_NO":"9569520","ISSUE_DT":"01/24/2023","CFR_STANDARD_CD":"75.523-3(c)(2)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"143.00","CURRENT_ASSESSMENT_AMT":"143.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-01-24"},{"SOURCE_ROW_NUMBER":"2866818","VIOLATION_NO":"9569519","ISSUE_DT":"01/24/2023","CFR_STANDARD_CD":"75.503","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"232.00","CURRENT_ASSESSMENT_AMT":"232.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-01-24"},{"SOURCE_ROW_NUMBER":"2866817","VIOLATION_NO":"9569518","ISSUE_DT":"01/13/2023","CFR_STANDARD_CD":"75.333(e)(1)(ii)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"198.00","CURRENT_ASSESSMENT_AMT":"198.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-01-13"},{"SOURCE_ROW_NUMBER":"2866816","VIOLATION_NO":"9569517","ISSUE_DT":"01/13/2023","CFR_STANDARD_CD":"75.807","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"657.00","CURRENT_ASSESSMENT_AMT":"657.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-01-13"},{"SOURCE_ROW_NUMBER":"2866815","VIOLATION_NO":"9569516","ISSUE_DT":"01/13/2023","CFR_STANDARD_CD":"75.352(g)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"346.00","CURRENT_ASSESSMENT_AMT":"346.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-01-13"},{"SOURCE_ROW_NUMBER":"2866814","VIOLATION_NO":"9569515","ISSUE_DT":"01/13/2023","CFR_STANDARD_CD":"75.400","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"712.00","CURRENT_ASSESSMENT_AMT":"712.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-01-13"}]},{"id":"msha-civil-penalty-dockets-decisions","name":"Civil Penalty Dockets and Decisions","domains":["compliance","legal"],"products":["docket lineage","decision outcomes","citation packet precedent"],"rowCount":112,"firstDate":"2017-06-30","lastDate":"2023-05-10","metrics":{"appeals":0,"decisions":112,"recentRows":37,"decisionPenalty":256043,"originalPenalty":465544.4},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"153270","VIOLATION_NO":"9566590","DOCKET_NO":"WEVA 2023-0051","DECISION_DT":"05/10/2023","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"3546.00","DECISION_PENALTY_AMT":"2500.00","JUDGE_FIRST_NAME":"William","JUDGE_LAST_NAME":"Moran","sourceDate":"2023-05-10"},{"SOURCE_ROW_NUMBER":"151384","VIOLATION_NO":"9564342","DOCKET_NO":"WEVA 2022-0392","DECISION_DT":"03/08/2023","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"9261.00","DECISION_PENALTY_AMT":"9261.00","JUDGE_FIRST_NAME":"John","JUDGE_LAST_NAME":"Sullivan","sourceDate":"2023-03-08"},{"SOURCE_ROW_NUMBER":"434019","VIOLATION_NO":"9564345","DOCKET_NO":"WEVA 2022-0394","DECISION_DT":"10/25/2022","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"518.40","DECISION_PENALTY_AMT":"518.00","JUDGE_FIRST_NAME":"John","JUDGE_LAST_NAME":"Sullivan","sourceDate":"2022-10-25"},{"SOURCE_ROW_NUMBER":"433176","VIOLATION_NO":"9564346","DOCKET_NO":"WEVA 2022-0394","DECISION_DT":"10/25/2022","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"183.60","DECISION_PENALTY_AMT":"184.00","JUDGE_FIRST_NAME":"John","JUDGE_LAST_NAME":"Sullivan","sourceDate":"2022-10-25"},{"SOURCE_ROW_NUMBER":"432902","VIOLATION_NO":"9564344","DOCKET_NO":"WEVA 2022-0394","DECISION_DT":"10/25/2022","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"518.40","DECISION_PENALTY_AMT":"518.00","JUDGE_FIRST_NAME":"John","JUDGE_LAST_NAME":"Sullivan","sourceDate":"2022-10-25"},{"SOURCE_ROW_NUMBER":"432901","VIOLATION_NO":"9564340","DOCKET_NO":"WEVA 2022-0393","DECISION_DT":"08/23/2022","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"1869.00","DECISION_PENALTY_AMT":"1869.00","JUDGE_FIRST_NAME":"N/A","sourceDate":"2022-08-23"},{"SOURCE_ROW_NUMBER":"430308","VIOLATION_NO":"9560307","DOCKET_NO":"WEVA 2021-0525","DECISION_DT":"01/07/2022","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"4598.00","DECISION_PENALTY_AMT":"3082.00","JUDGE_FIRST_NAME":"Michael","JUDGE_LAST_NAME":"Young","sourceDate":"2022-01-07"},{"SOURCE_ROW_NUMBER":"148651","VIOLATION_NO":"9560317","DOCKET_NO":"WEVA 2021-0526","DECISION_DT":"01/05/2022","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"4353.00","DECISION_PENALTY_AMT":"1500.00","JUDGE_FIRST_NAME":"N/A","sourceDate":"2022-01-05"},{"SOURCE_ROW_NUMBER":"428368","VIOLATION_NO":"9296878","DOCKET_NO":"WEVA 2021-0351","DECISION_DT":"11/29/2021","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"1179.00","DECISION_PENALTY_AMT":"1179.00","JUDGE_FIRST_NAME":"William","JUDGE_LAST_NAME":"Moran","sourceDate":"2021-11-29"},{"SOURCE_ROW_NUMBER":"427190","VIOLATION_NO":"9297753","DOCKET_NO":"WEVA 2021-0351","DECISION_DT":"11/29/2021","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"2422.00","DECISION_PENALTY_AMT":"2422.00","JUDGE_FIRST_NAME":"William","JUDGE_LAST_NAME":"Moran","sourceDate":"2021-11-29"},{"SOURCE_ROW_NUMBER":"426611","VIOLATION_NO":"9296895","DOCKET_NO":"WEVA 2021-0351","DECISION_DT":"11/29/2021","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"2237.00","DECISION_PENALTY_AMT":"749.00","JUDGE_FIRST_NAME":"William","JUDGE_LAST_NAME":"Moran","sourceDate":"2021-11-29"},{"SOURCE_ROW_NUMBER":"148092","VIOLATION_NO":"9297760","DOCKET_NO":"WEVA 2021-0351","DECISION_DT":"11/29/2021","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"4243.00","DECISION_PENALTY_AMT":"4243.00","JUDGE_FIRST_NAME":"William","JUDGE_LAST_NAME":"Moran","sourceDate":"2021-11-29"}]},{"id":"msha-coal-dust-samples","name":"Coal Dust Samples","domains":["health","safety"],"products":["respirable dust trends","CPDM coverage","void patterns","occupation exposure"],"rowCount":6750,"firstDate":"2001-01-01","lastDate":"2023-03-15","metrics":{"recentRows":2250,"cpdmSamples":5988,"voidSamples":2203,"validSamples":4547,"maxConcentration":126.812,"concentrationTotal":3153.246},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1562890","CASS_NUM":"58478979","SMP_TAKEN_DT":"3/15/2023","CONC":".053","SMP_TYPE_CD_DESC":"INTAKE AIR","SMP_USE_CD_DESC":"NOT USED ON INSPECTOR SAMPLES; NOT FOUND ON OPERATOR SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"OCCUPATION CODE NOT FOUND","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2023-03-15"},{"SOURCE_ROW_NUMBER":"1277074","CASS_NUM":"58478930","SMP_TAKEN_DT":"3/15/2023","CONC":".181","SMP_TYPE_CD_DESC":"NON DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"NOT USED ON INSPECTOR SAMPLES; NOT FOUND ON OPERATOR SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"UTILITY MAN","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2023-03-15"},{"SOURCE_ROW_NUMBER":"730593","CASS_NUM":"58478954","SMP_TAKEN_DT":"3/15/2023","CONC":".871","SMP_TYPE_CD_DESC":"NON DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"NOT USED ON INSPECTOR SAMPLES; NOT FOUND ON OPERATOR SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"UTILITY MAN","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2023-03-15"},{"SOURCE_ROW_NUMBER":"642914","CASS_NUM":"58478965","SMP_TAKEN_DT":"3/15/2023","CONC":".394","SMP_TYPE_CD_DESC":"NON DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"NOT USED ON INSPECTOR SAMPLES; NOT FOUND ON OPERATOR SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2023-03-15"},{"SOURCE_ROW_NUMBER":"248308","CASS_NUM":"58478978","SMP_TAKEN_DT":"3/15/2023","CONC":".123","SMP_TYPE_CD_DESC":"NON DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"NOT USED ON INSPECTOR SAMPLES; NOT FOUND ON OPERATOR SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"SCOOP CAR OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2023-03-15"},{"SOURCE_ROW_NUMBER":"12193","CASS_NUM":"58479020","SMP_TAKEN_DT":"3/15/2023","CONC":".238","SMP_TYPE_CD_DESC":"DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"NOT USED ON INSPECTOR SAMPLES; NOT FOUND ON OPERATOR SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"CONTINUOUS MINER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2023-03-15"},{"SOURCE_ROW_NUMBER":"2064190","SMP_TAKEN_DT":"3/8/2023","CONC":".43","SMP_TYPE_CD_DESC":"NON DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"VOID SAMPLE","VOID_CD_DESC":"EXCESS SAMPLE","OCC_CD_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","DEVICE_TYPE_CD":"CPDM","sourceDate":"2023-03-08"},{"SOURCE_ROW_NUMBER":"1723034","SMP_TAKEN_DT":"3/8/2023","CONC":".103","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":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","DEVICE_TYPE_CD":"CPDM","sourceDate":"2023-03-08"},{"SOURCE_ROW_NUMBER":"2917024","SMP_TAKEN_DT":"3/7/2023","CONC":".208","SMP_TYPE_CD_DESC":"NON DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"VOID SAMPLE","VOID_CD_DESC":"INVALID PRODUCTION","OCC_CD_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","DEVICE_TYPE_CD":"CPDM","sourceDate":"2023-03-07"},{"SOURCE_ROW_NUMBER":"2149555","SMP_TAKEN_DT":"3/7/2023","CONC":".223","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":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","DEVICE_TYPE_CD":"CPDM","sourceDate":"2023-03-07"},{"SOURCE_ROW_NUMBER":"2576588","SMP_TAKEN_DT":"3/6/2023","CONC":".084","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":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","DEVICE_TYPE_CD":"CPDM","sourceDate":"2023-03-06"},{"SOURCE_ROW_NUMBER":"2148756","SMP_TAKEN_DT":"3/6/2023","CONC":".272","SMP_TYPE_CD_DESC":"NON DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"VOID SAMPLE","OCC_CD_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","DEVICE_TYPE_CD":"CPDM","sourceDate":"2023-03-06"}]},{"id":"msha-conferences","name":"Conferences","domains":["compliance","legal"],"products":["conference history","post-issuance changes","citation lifecycle"],"rowCount":30,"firstDate":"2016-02-02","lastDate":"2020-09-11","metrics":{"linkedIssuances":30},"periods":{},"recentRecords":[]},{"id":"msha-contested-violations","name":"Contested Violations","domains":["compliance","legal"],"products":["contest status","time to resolution","contested-rate context"],"rowCount":112,"firstDate":"2015-06-11","lastDate":"2022-08-23","metrics":{"decisions":112,"ssChanged":9,"recentRows":15,"decisionPenalty":256043,"proposedPenalty":468384},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"389080","CITATION_NO":"9566590","CITATION_ISSUE_DT":"08/23/2022","DOCKET_NO":"WEVA 2023-0051","DECISION_DT":"05/10/2023","CFR_STANDARD_CODE":"75.517","ORIGINAL_SIG_SUB_IND":"Y","DECISION_SIG_SUB_IND":"Y","PROPOSED_PENALTY_AMT":"3546.00","DECISION_PENALTY_AMT":"2500.00","sourceDate":"2022-08-23"},{"SOURCE_ROW_NUMBER":"388868","CITATION_NO":"9564342","CITATION_ISSUE_DT":"04/04/2022","DOCKET_NO":"WEVA 2022-0392","DECISION_DT":"03/08/2023","CFR_STANDARD_CODE":"75.220(a)(1)","ORIGINAL_SIG_SUB_IND":"Y","DECISION_SIG_SUB_IND":"Y","PROPOSED_PENALTY_AMT":"9261.00","DECISION_PENALTY_AMT":"9261.00","sourceDate":"2022-04-04"},{"SOURCE_ROW_NUMBER":"332527","CITATION_NO":"9564345","CITATION_ISSUE_DT":"04/04/2022","DOCKET_NO":"WEVA 2022-0394","DECISION_DT":"10/25/2022","CFR_STANDARD_CODE":"75.503","ORIGINAL_SIG_SUB_IND":"N","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"1725.00","DECISION_PENALTY_AMT":"518.00","sourceDate":"2022-04-04"},{"SOURCE_ROW_NUMBER":"219046","CITATION_NO":"9564344","CITATION_ISSUE_DT":"04/04/2022","DOCKET_NO":"WEVA 2022-0394","DECISION_DT":"10/25/2022","CFR_STANDARD_CODE":"75.503","ORIGINAL_SIG_SUB_IND":"N","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"1725.00","DECISION_PENALTY_AMT":"518.00","sourceDate":"2022-04-04"},{"SOURCE_ROW_NUMBER":"51210","CITATION_NO":"9564346","CITATION_ISSUE_DT":"04/04/2022","DOCKET_NO":"WEVA 2022-0394","DECISION_DT":"10/25/2022","CFR_STANDARD_CODE":"75.512","ORIGINAL_SIG_SUB_IND":"N","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"610.00","DECISION_PENALTY_AMT":"184.00","sourceDate":"2022-04-04"},{"SOURCE_ROW_NUMBER":"50437","CITATION_NO":"9564340","CITATION_ISSUE_DT":"04/04/2022","DOCKET_NO":"WEVA 2022-0393","DECISION_DT":"08/23/2022","CFR_STANDARD_CODE":"75.202(b)","ORIGINAL_SIG_SUB_IND":"Y","DECISION_SIG_SUB_IND":"Y","PROPOSED_PENALTY_AMT":"1869.00","DECISION_PENALTY_AMT":"1869.00","sourceDate":"2022-04-04"},{"SOURCE_ROW_NUMBER":"49244","CITATION_NO":"9560317","CITATION_ISSUE_DT":"07/14/2021","DOCKET_NO":"WEVA 2021-0526","DECISION_DT":"01/05/2022","ORIGINAL_SIG_SUB_IND":"N","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"4353.00","DECISION_PENALTY_AMT":"1500.00","sourceDate":"2021-07-14"},{"SOURCE_ROW_NUMBER":"107407","CITATION_NO":"9560307","CITATION_ISSUE_DT":"07/13/2021","DOCKET_NO":"WEVA 2021-0525","DECISION_DT":"01/07/2022","CFR_STANDARD_CODE":"75.220(a)(1)","ORIGINAL_SIG_SUB_IND":"Y","DECISION_SIG_SUB_IND":"Y","PROPOSED_PENALTY_AMT":"4598.00","DECISION_PENALTY_AMT":"3082.00","sourceDate":"2021-07-13"},{"SOURCE_ROW_NUMBER":"163298","CITATION_NO":"9297760","CITATION_ISSUE_DT":"03/24/2021","DOCKET_NO":"WEVA 2021-0351","DECISION_DT":"11/29/2021","CFR_STANDARD_CODE":"75.604(b)","ORIGINAL_SIG_SUB_IND":"Y","DECISION_SIG_SUB_IND":"Y","PROPOSED_PENALTY_AMT":"4243.00","DECISION_PENALTY_AMT":"4243.00","sourceDate":"2021-03-24"},{"SOURCE_ROW_NUMBER":"216862","CITATION_NO":"9297753","CITATION_ISSUE_DT":"03/12/2021","DOCKET_NO":"WEVA 2021-0351","DECISION_DT":"11/29/2021","CFR_STANDARD_CODE":"75.220(a)(1)","ORIGINAL_SIG_SUB_IND":"Y","DECISION_SIG_SUB_IND":"Y","PROPOSED_PENALTY_AMT":"2422.00","DECISION_PENALTY_AMT":"2422.00","sourceDate":"2021-03-12"},{"SOURCE_ROW_NUMBER":"336022","CITATION_NO":"9296895","CITATION_ISSUE_DT":"03/09/2021","DOCKET_NO":"WEVA 2021-0351","DECISION_DT":"11/29/2021","CFR_STANDARD_CODE":"75.517","ORIGINAL_SIG_SUB_IND":"Y","DECISION_SIG_SUB_IND":"Y","PROPOSED_PENALTY_AMT":"2237.00","DECISION_PENALTY_AMT":"749.00","sourceDate":"2021-03-09"},{"SOURCE_ROW_NUMBER":"104163","CITATION_NO":"9296896","CITATION_ISSUE_DT":"03/09/2021","DOCKET_NO":"WEVA 2021-0351","DECISION_DT":"11/29/2021","CFR_STANDARD_CODE":"75.517","ORIGINAL_SIG_SUB_IND":"Y","DECISION_SIG_SUB_IND":"Y","PROPOSED_PENALTY_AMT":"2237.00","DECISION_PENALTY_AMT":"749.00","sourceDate":"2021-03-09"}]},{"id":"msha-contractor-production-quarterly","name":"Contractor Employment and Production — Quarterly","domains":["contractors","production","safety"],"products":["contractor exposure denominator","productivity","presence windows"],"rowCount":1104,"firstDate":null,"lastDate":null,"metrics":{"linkedContractors":6,"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":250,"firstDate":null,"lastDate":null,"metrics":{"linkedContractors":6,"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":6,"firstDate":"2014-10-01","lastDate":"2021-11-18","metrics":{"recentRows":3,"currentOperatorTenures":3,"completedOperatorTenures":3},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":113,"firstDate":"2015-06-11","lastDate":"2026-08-06","metrics":{"inspectors":295,"recentRows":40,"onSiteHours":4964.5,"inspectionHours":7991,"inspectionSamples":611},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"939360","EVENT_NO":"F011736","INSPECTION_BEGIN_DT":"08/06/2026","INSPECTION_END_DT":"08/06/2026","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":"1.5","sourceDate":"2026-08-06"},{"SOURCE_ROW_NUMBER":"495453","EVENT_NO":"F010DEA","INSPECTION_BEGIN_DT":"04/14/2026","INSPECTION_END_DT":"04/14/2026","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2026-04-14"},{"SOURCE_ROW_NUMBER":"419316","EVENT_NO":"F011542","INSPECTION_BEGIN_DT":"03/16/2026","INSPECTION_END_DT":"03/16/2026","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"5.5","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2026-03-16"},{"SOURCE_ROW_NUMBER":"910674","EVENT_NO":"F01D4D9","INSPECTION_BEGIN_DT":"10/09/2025","INSPECTION_END_DT":"10/09/2025","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.5","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2025-10-09"},{"SOURCE_ROW_NUMBER":"867697","EVENT_NO":"F03217F","INSPECTION_BEGIN_DT":"07/01/2025","INSPECTION_END_DT":"07/01/2025","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"5.25","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2025-07-01"},{"SOURCE_ROW_NUMBER":"88298","EVENT_NO":"7049217","INSPECTION_BEGIN_DT":"04/18/2025","INSPECTION_END_DT":"04/18/2025","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3.25","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2025-04-18"},{"SOURCE_ROW_NUMBER":"251180","EVENT_NO":"7049206","INSPECTION_BEGIN_DT":"01/30/2025","INSPECTION_END_DT":"01/30/2025","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.75","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2025-01-30"},{"SOURCE_ROW_NUMBER":"442090","EVENT_NO":"6320787","INSPECTION_BEGIN_DT":"11/01/2024","INSPECTION_END_DT":"11/01/2024","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.5","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2024-11-01"},{"SOURCE_ROW_NUMBER":"303974","EVENT_NO":"7048130","INSPECTION_BEGIN_DT":"07/05/2024","INSPECTION_END_DT":"07/06/2024","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6","SUM_TOTAL_ON_SITE_HOURS":"1.25","sourceDate":"2024-07-05"},{"SOURCE_ROW_NUMBER":"578694","EVENT_NO":"7049188","INSPECTION_BEGIN_DT":"04/19/2024","INSPECTION_END_DT":"04/19/2024","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3.5","SUM_TOTAL_ON_SITE_HOURS":"1.5","sourceDate":"2024-04-19"},{"SOURCE_ROW_NUMBER":"1000423","EVENT_NO":"7048178","INSPECTION_BEGIN_DT":"02/01/2024","INSPECTION_END_DT":"02/01/2024","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"5","SUM_TOTAL_ON_SITE_HOURS":"2.5","sourceDate":"2024-02-01"},{"SOURCE_ROW_NUMBER":"463913","EVENT_NO":"6306688","INSPECTION_BEGIN_DT":"10/13/2023","INSPECTION_END_DT":"10/13/2023","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.5","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2023-10-13"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":79,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2026-Q1":{"hours":0,"employees":0,"production":0},"2025-Q4":{"hours":0,"employees":0,"production":0},"2025-Q3":{"hours":0,"employees":0,"production":0},"2025-Q2":{"hours":0,"employees":0,"production":0},"2025-Q1":{"hours":0,"employees":0,"production":0},"2024-Q4":{"hours":0,"employees":0,"production":0},"2024-Q3":{"hours":0,"employees":0,"production":0},"2024-Q2":{"hours":0,"employees":0,"production":0},"2024-Q1":{"hours":0,"employees":0,"production":0},"2023-Q4":{"hours":0,"employees":0,"production":0},"2023-Q3":{"hours":0,"employees":0,"production":0},"2023-Q2":{"hours":12,"employees":1,"production":0}},"recentRecords":[]},{"id":"msha-mine-production-yearly","name":"Mine Employment and Production — Yearly","domains":["production","safety","compliance"],"products":["annual trend","backfill","quarterly reconciliation"],"rowCount":17,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2015":{"hours":13825,"employees":31,"production":15490},"2016":{"hours":96254,"employees":53,"production":210104},"2017":{"hours":93579,"employees":59,"production":187676},"2018":{"hours":192280,"employees":86,"production":252707},"2019":{"hours":256727,"employees":111,"production":362973},"2020":{"hours":244891,"employees":109,"production":330487},"2021":{"hours":246008,"employees":108,"production":372754},"2022":{"hours":200875,"employees":88,"production":227423},"2023":{"hours":35000,"employees":43,"production":27901},"2026":{"hours":0,"employees":0,"production":0}},"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":152,"firstDate":"2016-02-23","lastDate":"2022-11-15","metrics":{"recentRows":42,"doseOver100":1,"actDoseTotal":5431,"pelDoseTotal":2971},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"268522","EVENT_NO":"7033025","SURVEY_DATE":"11/15/2022","OCCUPATION_CD_DESC":"HIGHLIFT OPERATOR/FRONT END LOADER","MACHINE_CD":"18","ACT_DOSE_85":"6","PEL_DOSE_90":"2","SURVEY_TYPE":"I","sourceDate":"2022-11-15"},{"SOURCE_ROW_NUMBER":"268521","EVENT_NO":"7033025","SURVEY_DATE":"11/15/2022","OCCUPATION_CD_DESC":"DISPATCHER","MACHINE_CD":"40","ACT_DOSE_85":"4","PEL_DOSE_90":"1","SURVEY_TYPE":"I","sourceDate":"2022-11-15"},{"SOURCE_ROW_NUMBER":"268527","EVENT_NO":"7033025","SURVEY_DATE":"10/05/2022","OCCUPATION_CD_DESC":"UTILITY MAN","MACHINE_CD":"40","ACT_DOSE_85":"8","PEL_DOSE_90":"2","SURVEY_TYPE":"I","sourceDate":"2022-10-05"},{"SOURCE_ROW_NUMBER":"268526","EVENT_NO":"7033025","SURVEY_DATE":"10/05/2022","OCCUPATION_CD_DESC":"UTILITY MAN","MACHINE_CD":"40","ACT_DOSE_85":"11","PEL_DOSE_90":"4","SURVEY_TYPE":"I","sourceDate":"2022-10-05"},{"SOURCE_ROW_NUMBER":"268525","EVENT_NO":"7033025","SURVEY_DATE":"10/05/2022","OCCUPATION_CD_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","MACHINE_CD":"37","ACT_DOSE_85":"21","PEL_DOSE_90":"6","SURVEY_TYPE":"I","sourceDate":"2022-10-05"},{"SOURCE_ROW_NUMBER":"268524","EVENT_NO":"7033025","SURVEY_DATE":"10/05/2022","OCCUPATION_CD_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","MACHINE_CD":"37","ACT_DOSE_85":"17","PEL_DOSE_90":"3","SURVEY_TYPE":"I","sourceDate":"2022-10-05"},{"SOURCE_ROW_NUMBER":"268523","EVENT_NO":"7033025","SURVEY_DATE":"10/05/2022","OCCUPATION_CD_DESC":"CONTINUOUS MINER OPERATOR","MACHINE_CD":"06","ACT_DOSE_85":"17","PEL_DOSE_90":"7","SURVEY_TYPE":"I","sourceDate":"2022-10-05"},{"SOURCE_ROW_NUMBER":"268520","EVENT_NO":"7033025","SURVEY_DATE":"10/05/2022","OCCUPATION_CD_DESC":"SCOOP CAR OPERATOR","MACHINE_CD":"40","ACT_DOSE_85":"22","PEL_DOSE_90":"6","SURVEY_TYPE":"I","sourceDate":"2022-10-05"},{"SOURCE_ROW_NUMBER":"268519","EVENT_NO":"7033025","SURVEY_DATE":"10/05/2022","OCCUPATION_CD_DESC":"UTILITY MAN","MACHINE_CD":"40","ACT_DOSE_85":"11","PEL_DOSE_90":"4","SURVEY_TYPE":"I","sourceDate":"2022-10-05"},{"SOURCE_ROW_NUMBER":"268518","EVENT_NO":"7033025","SURVEY_DATE":"10/05/2022","OCCUPATION_CD_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","MACHINE_CD":"37","ACT_DOSE_85":"33","PEL_DOSE_90":"19","SURVEY_TYPE":"I","sourceDate":"2022-10-05"},{"SOURCE_ROW_NUMBER":"268517","EVENT_NO":"7033025","SURVEY_DATE":"10/05/2022","OCCUPATION_CD_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","MACHINE_CD":"37","ACT_DOSE_85":"49","PEL_DOSE_90":"21","SURVEY_TYPE":"I","sourceDate":"2022-10-05"},{"SOURCE_ROW_NUMBER":"268516","EVENT_NO":"7033025","SURVEY_DATE":"10/05/2022","OCCUPATION_CD_DESC":"CONTINUOUS MINER OPERATOR","MACHINE_CD":"06","ACT_DOSE_85":"19","PEL_DOSE_90":"11","SURVEY_TYPE":"I","sourceDate":"2022-10-05"}]},{"id":"msha-quartz-samples","name":"Quartz Samples — Coal","domains":["health","safety"],"products":["quartz exposure trends","occupation context","applicable-rule linkage"],"rowCount":250,"firstDate":"2015-12-21","lastDate":"2023-03-15","metrics":{"recentRows":76,"voidSamples":13,"maxQuartzPct":14.9,"validSamples":237,"quartzPctTotal":1376},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"162032","CASSETTE_NO":"58479020","SAMPLE_DT":"03/15/2023","QUARTZ_PCT":"06.0","QUARTZ_MICROGRAMS":"14","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2023-03-15"},{"SOURCE_ROW_NUMBER":"139643","CASSETTE_NO":"58478965","SAMPLE_DT":"03/15/2023","QUARTZ_PCT":"05.5","QUARTZ_MICROGRAMS":"21","OCC_CODE_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","SAMPLE_TYPE_DESC":"NON DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2023-03-15"},{"SOURCE_ROW_NUMBER":"90034","CASSETTE_NO":"58475892","SAMPLE_DT":"12/30/2022","QUARTZ_PCT":"03.4","QUARTZ_MICROGRAMS":"11","OCC_CODE_DESC":"ROOF BOLTER (TWIN HEAD) (RETURN SIDE)","SAMPLE_TYPE_DESC":"NON DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2022-12-30"},{"SOURCE_ROW_NUMBER":"55564","CASSETTE_NO":"58476447","SAMPLE_DT":"12/30/2022","QUARTZ_PCT":"03.2","QUARTZ_MICROGRAMS":"8","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2022-12-30"},{"SOURCE_ROW_NUMBER":"46016","CASSETTE_NO":"58476116","SAMPLE_DT":"12/30/2022","QUARTZ_PCT":"03.5","QUARTZ_MICROGRAMS":"7","OCC_CODE_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","SAMPLE_TYPE_DESC":"NON DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2022-12-30"},{"SOURCE_ROW_NUMBER":"93005","CASSETTE_NO":"58475942","SAMPLE_DT":"12/21/2022","QUARTZ_PCT":"05.4","QUARTZ_MICROGRAMS":"7","OCC_CODE_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","SAMPLE_TYPE_DESC":"NON DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2022-12-21"},{"SOURCE_ROW_NUMBER":"50136","CASSETTE_NO":"58475933","SAMPLE_DT":"12/21/2022","QUARTZ_PCT":"05.0","QUARTZ_MICROGRAMS":"24","OCC_CODE_DESC":"ROOF BOLTER (TWIN HEAD) (RETURN SIDE)","SAMPLE_TYPE_DESC":"NON DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2022-12-21"},{"SOURCE_ROW_NUMBER":"72149","CASSETTE_NO":"58476436","SAMPLE_DT":"10/05/2022","QUARTZ_PCT":"04.4","QUARTZ_MICROGRAMS":"15","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2022-10-05"},{"SOURCE_ROW_NUMBER":"39958","CASSETTE_NO":"58476043","SAMPLE_DT":"10/05/2022","QUARTZ_PCT":"04.3","QUARTZ_MICROGRAMS":"15","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2022-10-05"},{"SOURCE_ROW_NUMBER":"20402","CASSETTE_NO":"58476363","SAMPLE_DT":"10/05/2022","QUARTZ_PCT":"04.1","QUARTZ_MICROGRAMS":"8","OCC_CODE_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","SAMPLE_TYPE_DESC":"NON DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2022-10-05"},{"SOURCE_ROW_NUMBER":"7488","CASSETTE_NO":"58476421","SAMPLE_DT":"10/05/2022","QUARTZ_PCT":"03.9","QUARTZ_MICROGRAMS":"8","OCC_CODE_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","SAMPLE_TYPE_DESC":"NON DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2022-10-05"},{"SOURCE_ROW_NUMBER":"159232","CASSETTE_NO":"58476359","SAMPLE_DT":"09/30/2022","QUARTZ_PCT":"04.7","QUARTZ_MICROGRAMS":"8","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2022-09-30"}]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":1284,"firstDate":"2015-06-11","lastDate":"2023-02-03","metrics":{"ss":220,"amountDue":895160,"contested":0,"amountPaid":895160,"recentRows":321,"section104d":4,"unterminated":5,"proposedPenalty":1104661.4},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"2972644","VIOLATION_NO":"9569390","VIOLATION_ISSUE_DT":"02/03/2023","SIG_SUB":"N","PART_SECTION":"75.1505(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"HighNegligence","TERMINATION_DT":"02/14/2023","PROPOSED_PENALTY":"657","AMOUNT_DUE":"657","AMOUNT_PAID":"657","CONTESTED_IND":"N","sourceDate":"2023-02-03"},{"SOURCE_ROW_NUMBER":"2972643","VIOLATION_NO":"9569389","VIOLATION_ISSUE_DT":"02/03/2023","SIG_SUB":"N","SECTION_OF_ACT":"316(b)(2)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"02/14/2023","PROPOSED_PENALTY":"220","AMOUNT_DUE":"220","AMOUNT_PAID":"220","CONTESTED_IND":"N","sourceDate":"2023-02-03"},{"SOURCE_ROW_NUMBER":"2972642","VIOLATION_NO":"9569385","VIOLATION_ISSUE_DT":"02/01/2023","SIG_SUB":"N","PART_SECTION":"75.362(a)(2)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Permanent","NO_AFFECTED":"1","NEGLIGENCE":"HighNegligence","TERMINATION_DT":"02/03/2023","PROPOSED_PENALTY":"980","AMOUNT_DUE":"980","AMOUNT_PAID":"980","CONTESTED_IND":"N","sourceDate":"2023-02-01"},{"SOURCE_ROW_NUMBER":"2972641","VIOLATION_NO":"9569384","VIOLATION_ISSUE_DT":"02/01/2023","SIG_SUB":"N","PART_SECTION":"75.370(a)(1)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Permanent","NO_AFFECTED":"1","NEGLIGENCE":"HighNegligence","TERMINATION_DT":"02/13/2023","PROPOSED_PENALTY":"980","AMOUNT_DUE":"980","AMOUNT_PAID":"980","CONTESTED_IND":"N","sourceDate":"2023-02-01"},{"SOURCE_ROW_NUMBER":"2972640","VIOLATION_NO":"9569383","VIOLATION_ISSUE_DT":"02/01/2023","SIG_SUB":"Y","PART_SECTION":"72.630(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Permanent","NO_AFFECTED":"2","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"02/01/2023","PROPOSED_PENALTY":"1585","AMOUNT_DUE":"1585","AMOUNT_PAID":"1585","CONTESTED_IND":"N","sourceDate":"2023-02-01"},{"SOURCE_ROW_NUMBER":"2972639","VIOLATION_NO":"9569382","VIOLATION_ISSUE_DT":"02/01/2023","SIG_SUB":"N","PART_SECTION":"75.362(a)(2)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"HighNegligence","TERMINATION_DT":"02/14/2023","PROPOSED_PENALTY":"182","AMOUNT_DUE":"182","AMOUNT_PAID":"182","CONTESTED_IND":"N","sourceDate":"2023-02-01"},{"SOURCE_ROW_NUMBER":"2972651","VIOLATION_NO":"9569520","VIOLATION_ISSUE_DT":"01/24/2023","SIG_SUB":"N","PART_SECTION":"75.523-3(c)(2)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"02/01/2023","PROPOSED_PENALTY":"143","AMOUNT_DUE":"143","AMOUNT_PAID":"143","CONTESTED_IND":"N","sourceDate":"2023-01-24"},{"SOURCE_ROW_NUMBER":"2972650","VIOLATION_NO":"9569519","VIOLATION_ISSUE_DT":"01/24/2023","SIG_SUB":"N","PART_SECTION":"75.503","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"2","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"02/01/2023","PROPOSED_PENALTY":"232","AMOUNT_DUE":"232","AMOUNT_PAID":"232","CONTESTED_IND":"N","sourceDate":"2023-01-24"},{"SOURCE_ROW_NUMBER":"2972649","VIOLATION_NO":"9569518","VIOLATION_ISSUE_DT":"01/13/2023","SIG_SUB":"N","PART_SECTION":"75.333(e)(1)(ii)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"01/13/2023","PROPOSED_PENALTY":"198","AMOUNT_DUE":"198","AMOUNT_PAID":"198","CONTESTED_IND":"N","sourceDate":"2023-01-13"},{"SOURCE_ROW_NUMBER":"2972648","VIOLATION_NO":"9569517","VIOLATION_ISSUE_DT":"01/13/2023","SIG_SUB":"N","PART_SECTION":"75.807","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"01/13/2023","PROPOSED_PENALTY":"657","AMOUNT_DUE":"657","AMOUNT_PAID":"657","CONTESTED_IND":"N","sourceDate":"2023-01-13"},{"SOURCE_ROW_NUMBER":"2972647","VIOLATION_NO":"9569516","VIOLATION_ISSUE_DT":"01/13/2023","SIG_SUB":"N","PART_SECTION":"75.352(g)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"12","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"01/13/2023","PROPOSED_PENALTY":"346","AMOUNT_DUE":"346","AMOUNT_PAID":"346","CONTESTED_IND":"N","sourceDate":"2023-01-13"},{"SOURCE_ROW_NUMBER":"2972646","VIOLATION_NO":"9569515","VIOLATION_ISSUE_DT":"01/13/2023","SIG_SUB":"N","PART_SECTION":"75.400","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"2","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"01/24/2023","PROPOSED_PENALTY":"712","AMOUNT_DUE":"712","AMOUNT_PAID":"712","CONTESTED_IND":"N","sourceDate":"2023-01-13"}]}],"safety":{"href":"/api/v1/mines/4609496/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4609496/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 75.1505","heading":"Escapeway maps.","id":"75.1505","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-P/section-75.1505","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"P","subpartHeading":"Subpart P—Mine Emergencies","text":"(a) Content and accessibility. An escapeway map shall show the designated escapeways from the working sections or the miners' work stations to the surface or the exits at the bottom of the shaft or slope, refuge alternatives, and SCSR storage locations. The escapeway map shall be posted or readily accessible for all miners—\n\n(1) In each working section;\n\n(2) In each area where mechanized mining equipment is being installed or removed;\n\n(3) At the refuge alternative; and\n\n(4) At a surface location of the mine where miners congregate, such as at the mine bulletin board, bathhouse, or waiting room.\n\n(b) Keeping maps current. All maps shall be kept up-to-date and any change in route of travel, location of doors, location of refuge alternatives, or direction of airflow shall be shown on the maps by the end of the shift on which the change is made.\n\n(c) Informing affected miners. Miners underground on a shift when any such change is made shall be notified immediately of the change and other affected miners shall be informed of the change before entering the underground areas of the mine.\n\n[71 FR 71452, Dec. 8, 2006, as amended at 73 FR 80698, Dec. 31, 2008]","occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.362","heading":"On-shift examination.","id":"75.362","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.362","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) At least once during each shift, or more often if necessary for safety, a certified person designated by the operator shall conduct an on-shift examination of each section where anyone is assigned to work during the shift and any area where mechanized mining equipment is being installed or removed during the shift. The certified person shall check for hazardous conditions and violations of the mandatory health or safety standards referenced in paragraph (a)(3) of this section, test for methane and oxygen deficiency, and determine if the air is moving in its proper direction.\n\n(2) A person designated by the operator shall conduct an examination and record the results and the corrective actions taken to assure compliance with the respirable dust control parameters specified in the approved mine ventilation plan. In those instances when a shift change is accomplished without an interruption in production on a section, the examination shall be made anytime within 1 hour after the shift change. In those instances when there is an interruption in production during the shift change, the examination shall be made before production begins on a section. Deficiencies in dust controls shall be corrected before production begins or resumes. The examination shall include: Air quantities and velocities; water pressures and flow rates; excessive leakage in the water delivery system; water spray numbers and orientations; section ventilation and control device placement; roof bolting machine dust collector vacuum levels; scrubber air flow rate; work practices required by the ventilation plan; and any other dust suppression measures. Measurements of the air velocity and quantity, water pressure and flow rates are not required if continuous monitoring of these controls is used and indicates that the dust controls are functioning properly.\n\n(3) On-shift examinations shall include examinations to identify violations of the standards listed below:\n\n(i) §§ 75.202(a) and 75.220(a)(1)—roof control;\n\n(ii) §§ 75.333(h) and 75.370(a)(1)—ventilation, methane;\n\n(iii) §§ 75.400 and 75.403—accumulations of combustible materials and application of rock dust;\n\n(iv) § 75.1403—other safeguards, limited to maintenance of travelways along belt conveyors, off track haulage roadways, and track haulage, track switches, and other components for haulage;\n\n(v) § 75.1722(a)—guarding moving machine parts; and\n\n(vi) § 75.1731(a)—maintenance of belt conveyor components.\n\n(b) During each shift that coal is produced, a certified person shall examine for hazardous conditions and violations of the mandatory health or safety standards referenced in paragraph (a)(3) of this section along each belt conveyor haulageway where a belt conveyor is operated. This examination may be conducted at the same time as the preshift examination of belt conveyors and belt conveyor haulageways, if the examination is conducted within 3 hours before the oncoming shift.\n\n(c) Persons conducting the on-shift examination shall determine at the following locations:\n\n(1) The volume of air in the last open crosscut of each set of entries or rooms on each section and areas where mechanized mining equipment is being installed or removed. The last open crosscut is the crosscut in the line of pillars containing the permanent stoppings that separate the intake air courses and the return air courses.\n\n(2) The volume of air on a longwall or shortwall, including areas where longwall or shortwall equipment is being installed or removed, in the intake entry or entries at the intake end of the longwall or shortwall.\n\n(3) The velocity of air at each end of the longwall or shortwall face at the locations specified in the approved ventilation plan.\n\n(4) The volume of air at the intake end of any pillar line—\n\n(i) Where a single split of air is used in the intake entry furthest from the return air course immediately outby the first open crosscut outby the line of pillars being mined; or\n\n(ii) Where a split system is used in the intake entries of each split immediately inby the split point.\n\n(d) (1) A qualified person shall make tests for methane—\n\n(i) At the start of each shift at each working place before electrically operated equipment is energized; and\n\n(ii) Immediately before equipment is energized, taken into, or operated in a working place; and\n\n(iii) At 20-minute intervals, or more often if required in the approved ventilation plan at specific locations, during the operation of equipment in the working place.\n\n(2) Except as provided for in paragraph (d)(3) of this section, these methane tests shall be made at the face from under permanent roof support, using extendable probes or other acceptable means. When longwall or shortwall mining systems are used, these methane tests shall be made at the shearer, the plow, or the cutting head. When mining has been stopped for more than 20 minutes, methane tests shall be conducted prior to the start up of equipment.\n\n(3) As an alternative method of compliance with paragraph (d)(2) of this section during roof bolting, methane tests may be made by sweeping an area not less than 16 feet inby the last area of permanently supported roof, using a probe or other acceptable means. This method of testing is conditioned on meeting the following requirements:\n\n(i) The roof bolting machine must be equipped with an integral automated temporary roof support (ATRS) system that meets the requirements of 30 CFR 75.209.\n\n(ii) The roof bolting machine must have a permanently mounted, MSHA-approved methane monitor which meets the maintenance and calibration requirements of 30 CFR 75.342(a)(4), the warning signal requirements of 30 CFR 75.342(b), and the automatic de-energization requirements of 30 CFR 75.342(c).\n\n(iii) The methane monitor sensor must be mounted near the inby end and within 18 inches of the longitudinal center of the ATRS support, and positioned at least 12 inches from the roof when the ATRS is fully deployed.\n\n(iv) Manual methane tests must be made at intervals not exceeding 20 minutes. The test may be made either from under permanent roof support or from the roof bolter's work position protected by the deployed ATRS.\n\n(v) Once a methane test is made at the face, all subsequent methane tests in the same area of unsupported roof must also be made at the face, from under permanent roof support, using extendable probes or other acceptable means at intervals not exceeding 20 minutes.\n\n(vi) The district manager may require that the ventilation plan include the minimum air quantity and the position and placement of ventilation controls to be maintained during roof bolting.\n\n(e) If auxiliary fans and tubing are used, they shall be inspected frequently.\n\n(f) During each shift that coal is produced and at intervals not exceeding 4 hours, tests for methane shall be made by a certified person or by an atmospheric monitoring system (AMS) in each return split of air from each working section between the last working place, or longwall or shortwall face, ventilated by that split of air and the junction of the return air split with another air split, seal, or worked-out area. If auxiliary fans and tubing are used, the tests shall be made at a location outby the auxiliary fan discharge.\n\n(g) Certification. (1) The person conducting the on-shift examination in belt haulage entries shall certify by initials, date, and time that the examination was made. The certified person shall certify by initials, date, and the time at enough locations to show that the entire area has been examined.\n\n(2) The certified person directing the on-shift examination to assure compliance with the respirable dust control parameters specified in the approved mine ventilation plan shall:\n\n(i) Certify by initials, date, and time on a board maintained at the section load-out or similar location showing that the examination was made prior to resuming production; and\n\n(ii) Verify, by initials and date, the record of the results of the examination required under (a)(2) of this section to assure compliance with the respirable dust control parameters specified in the mine ventilation plan. The verification shall be made no later than the end of the shift for which the examination was made.\n\n(3) The mine foreman or equivalent mine official shall countersign each examination record required under (a)(2) of this section after it is verified by the certified person under (g)(2)(ii) of this section, and no later than the end of the mine foreman's or equivalent mine official's next regularly scheduled working shift. The record shall be made 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(4) Records shall be retained at a surface location at the mine for at least 1 year and shall be made available for inspection by authorized representatives of the Secretary and the representative of miners.\n\n[61 FR 9829, Mar. 11, 1996; 61 FR 26442, May 28, 1996, as amended at 68 FR 40138, July 7, 2003; 77 FR 20715, Apr. 6, 2012; 79 FR 24987, May 1, 2014]","occurrenceCount":2},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.370","heading":"Mine ventilation plan; submission and approval.","id":"75.370","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.370","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) The operator shall develop and follow a ventilation plan approved by the district manager. The plan shall be designed to control methane and respirable dust and shall be suitable to the conditions and mining system at the mine. The ventilation plan shall consist of two parts, the plan content as prescribed in § 75.371 and the ventilation map with information as prescribed in § 75.372. Only that portion of the map which contains information required under § 75.371 will be subject to approval by the district manager.\n\n(2) The proposed ventilation plan and any revision to the plan shall be submitted in writing to the district manager. When revisions to a ventilation plan are proposed, only the revised pages, maps, or sketches of the plan need to be submitted. When required in writing by the district manager, the operator shall submit a fully revised plan by consolidating the plan and all revisions in an orderly manner and by deleting all outdated material.\n\n(3) (i) The mine operator shall notify the representative of miners at least 5 days prior to submission of a mine ventilation plan and any revision to a mine ventilation plan. If requested, the mine operator shall provide a copy to the representative of miners at the time of notification. In the event of a situation requiring immediate action on a plan revision, notification of the revision shall be given, and if requested, a copy of the revision shall be provided, to the representative of miners by the operator at the time of submittal;\n\n(ii) A copy of the proposed ventilation plan, and a copy of any proposed revision, submitted for approval shall be made available for inspection by the representative of miners; and\n\n(iii) A copy of the proposed ventilation plan, and a copy of any proposed revision, submitted for approval shall be posted on the mine bulletin board at the time of submittal. The proposed plan or proposed revision shall remain posted until it is approved, withdrawn or denied.\n\n(b) Following receipt of the proposed plan or proposed revision, the representative of miners may submit timely comments to the district manager, in writing, for consideration during the review process. A copy of these comments shall also be provided to the operator by the district manager upon request.\n\n(c) (1) The district manager will notify the operator in writing of the approval or denial of approval of a proposed ventilation plan or proposed revision. A copy of this notification will be sent to the representative of miners by the district manager.\n\n(2) If the district manager denies approval of a proposed plan or revision, the deficiencies of the plan or revision shall be specified in writing and the operator will be provided an opportunity to discuss the deficiencies with the district manager.\n\n(d) No proposed ventilation plan shall be implemented before it is approved by the district manager. Any intentional change to the ventilation system that alters the main air current or any split of the main air current in a manner that could materially affect the safety and health of the miners, or any change to the information required in § 75.371 shall be submitted to and approved by the district manager before implementation.\n\n(e) Before implementing an approved ventilation plan or a revision to a ventilation plan, persons affected by the revision shall be instructed by the operator in its provisions.\n\n(f) The approved ventilation plan and any revisions shall be—\n\n(1) Provided upon request to the representative of miners by the operator following notification of approval;\n\n(2) Made available for inspection by the representative of miners; and\n\n(3) Posted on the mine bulletin board within 1 working day following notification of approval. The approved plan and revisions shall remain posted on the bulletin board for the period that they are in effect.\n\n(g) The ventilation plan for each mine shall be reviewed every 6 months by an authorized representative of the Secretary to assure that it is suitable to current conditions in the mine.","occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 72.630","heading":"Drill dust control at underground areas of underground mines.","id":"72.630","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-72/subpart-E/section-72.630","part":"72","partHeading":"PART 72—HEALTH STANDARDS FOR COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"E","subpartHeading":"Subpart E—Miscellaneous","text":"(a) Dust resulting from drilling in rock shall be controlled by use of permissible dust collectors, or by water, or water with a wetting agent, or by ventilation, or by any other method or device approved by the Secretary that is as effective in controlling the dust.\n\n(b) Dust collectors. Dust collectors shall be maintained in permissible and operating condition. Dust collectors approved under Part 33—Dust Collectors for Use in Connection with Rock Drilling in Coal Mines of this title or under Bureau of Mines Schedule 25B are permissible dust collectors for the purpose of this section.\n\n(c) Water control. Water used to control dust from drilling rock shall be applied through a hollow drill steel or stem or by the flooding of vertical drill holes in the floor.\n\n(d) Ventilation control. To adequately control dust from drilling rock, the air current shall be so directed that the dust is readily dispersed and carried away from the drill operator or any other miners in the area.","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":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.503","heading":"Permissible electric face equipment; maintenance.","id":"75.503","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.503","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\nThe operator of each coal mine shall maintain in permissible condition all electric face equipment required by §§ 75.500, 75.501, 75.504 to be permissible which is taken into or used inby the last open crosscut of any such mine.","occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.333","heading":"Ventilation controls.","id":"75.333","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.333","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) For purposes of this section, “doors” include any door frames.\n\n(b) Permanent stoppings or other permanent ventilation control devices constructed after November 15, 1992, shall be built and maintained—\n\n(1) Between intake and return air courses, except temporary controls may be used in rooms that are 600 feet or less from the centerline of the entry from which the room was developed including where continuous face haulage systems are used in such rooms. Unless otherwise approved in the ventilation plan, these stoppings or controls shall be maintained to and including the third connecting crosscut outby the working face;\n\n(2) To separate belt conveyor haulageways from return air courses, except where belt entries in areas of mines developed before March 30, 1970, are used as return air courses;\n\n(3) To separate belt conveyor haulageways from intake air courses when the air in the intake air courses is used to provide air to active working places. Temporary ventilation controls may be used in rooms that are 600 feet or less from the centerline of the entry from which the rooms were developed including where continuous face haulage systems are used in such rooms. When continuous face haulage systems are used, permanent stoppings or other permanent ventilation control devices shall be built and maintained to the outby most point of travel of the dolly or 600 feet from the point of deepest penetration in the conveyor belt entry, whichever distance is closer to the point of deepest penetration, to separate the continuous haulage entry from the intake entries;\n\n(4) To separate the primary escapeway from belt and trolley haulage entries, as required by § 75.380(g). For the purposes of § 75.380(g), the loading point for a continuous haulage system shall be the outby most point of travel of the dolly or 600 feet from the point of deepest penetration, whichever distance is less; and\n\n(5) In return air courses to direct air into adjacent worked-out areas.\n\n(c) Personnel doors shall be constructed of noncombustible material and shall be of sufficient strength to serve their intended purpose of maintaining separation and permitting travel between air courses, and shall be installed as follows in permanent stoppings constructed after November 15, 1992:\n\n(1) The distance between personnel doors shall be no more than 300 feet in seam heights below 48 inches and 600 feet in seam heights 48 inches or higher.\n\n(2) The location of all personnel doors in stoppings along escapeways shall be clearly marked so that the doors may be easily identified by anyone traveling in the escapeway and in the entries on either side of the doors.\n\n(3) When not in use, personnel doors shall be closed.\n\n(4) An airlock shall be established where the air pressure differential between air courses creates a static force exceeding 125 pounds on closed personnel doors along escapeways.\n\n(d) Doors, other than personnel doors, constructed after November 15, 1992, that are used in lieu of permanent stoppings or to control ventilation within an air course shall be:\n\n(1) Made of noncombustible material or coated on all accessible surfaces with flame-retardant materials having a flame-spread index of 25 or less, as tested under ASTM E162-87, “Standard Test Method for Surface Flammability of Materials Using a Radiant Heat Energy Source.” This publication is incorporated by reference and may be inspected at any MSHA Coal Mine Safety and Health District Office, or at MSHA's Office of Standards, Regulations, and Variances, 200 Constitution Avenue NW, Washington, DC 20210; 202-693-9440; and at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. In addition, copies of the document can be purchased from the American Society for Testing and Materials (ASTM), 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959; 610-832-9500; http://www.astm.org. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51.\n\n(2) Of sufficient strength to serve their intended purpose of maintaining separation and permitting travel between or within air courses or entries.\n\n(3) Installed in pairs to form an airlock. When an airlock is used, one side of the airlock shall remain closed. When not in use, both sides shall be closed.\n\n(e)(1)(i) Except as provided in paragraphs (e)(2), (3), and (4) of this section, all overcasts, undercasts, shaft partitions, permanent stoppings, and regulators, installed after June 10, 1996, shall be constructed in a traditionally accepted method and of materials that have been demonstrated to perform adequately or in a method and of materials that have been tested and shown to have a minimum strength equal to or greater than the traditionally accepted in-mine controls. Tests may be performed under ASTM E72-80, “Standard Methods of Conducting Strength Tests of Panels for Building Construction” (Section 12-Transverse Load-Specimen Vertical, load, only), or the operator may conduct comparative in-mine tests. In-mine tests shall be designed to demonstrate the comparative strength of the proposed construction and a traditionally accepted in-mine control. The publication ASTM E72-80, “Standard Methods of Conducting Strength Tests of Panels for Building Construction,” is incorporated by reference and may be inspected at any MSHA Coal Mine Safety and Health District Office, or at MSHA's Office of Standards, Regulations, and Variances, 200 Constitution Avenue NW, Washington, DC 20210; 202-693-9440; and at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. In addition, copies of the document can be purchased from the American Society for Testing and Materials (ASTM), 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959; 610-832-9500; http://www.astm.org. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51.\n\n(ii) All overcasts, undercasts, shaft partitions, permanent stoppings, and regulators, installed after November 15, 1992, shall be constructed of noncombustible material. Materials that are suitable for the construction of overcasts, undercasts, shaft partitions, permanent stoppings, and regulators include concrete, concrete block, brick, cinder block, tile, or steel. No ventilation controls installed after November 15, 1992, shall be constructed of aluminum.\n\n(2) In anthracite mines, permanent stoppings may be constructed of overlapping layers of hardwood mine boards, if the stoppings are a minimum 2 inches thick.\n\n(3) When timbers are used to create permanent stoppings in heaving or caving areas, the stoppings shall be coated on all accessible surfaces with a flame-retardant material having a flame-spread index of 25 or less, as tested under ASTM E162-87, “Standard Test Method for Surface Flammability of Materials Using a Radiant Heat Energy Source.” This publication is incorporated by reference and may be inspected at any MSHA Coal Mine Safety and Health District Office, or at MSHA's Office of Standards, Regulations, and Variances, 200 Constitution Avenue NW, Washington, DC 20210; 202-693-9440; and at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. In addition, copies of the document can be purchased from the American Society for Testing and Materials (ASTM), 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959; 610-832-9500; http://www.astm.org. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51.\n\n(4) In anthracite mines, doors and regulators may be constructed of overlapping layers of hardwood boards, if the doors, door frames, and regulators are a minimum 2 inches thick.\n\n(f) When sealants are applied to ventilation controls, the sealant shall have a flame-spread index of 25 or less under ASTM E162-87, “Standard Test Method for Surface Flammability of Materials Using a Radiant Heat Energy Source.” This publication is incorporated by reference and may be inspected at any MSHA Coal Mine Safety and Health District Office, or at MSHA's Office of Standards, Regulations, and Variances, 200 Constitution Avenue NW, Washington, DC 20210; 202-693-9440; and at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. In addition, copies of the document can be purchased from the American Society for Testing and Materials (ASTM), 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959; 610-832-9500; http://www.astm.org. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51.\n\n(g) Before mining is discontinued in an entry or room that is advanced more than 20 feet from the inby rib, a crosscut shall be made or line brattice shall be installed and maintained to provide adequate ventilation. When conditions such as methane liberation warrant a distance less than 20 feet, the approved ventilation plan shall specify the location of such rooms or entries and the maximum distance they will be developed before a crosscut is made or line brattice is installed.\n\n(h) All ventilation controls, including seals, shall be maintained to serve the purpose for which they were built.\n\n[61 FR 9829, Mar. 11, 1996; 61 FR 20877, May 8, 1996; 61 FR 26442, May 28, 1996; 61 FR 29288, 29289, June 10, 1996, as amended at 67 FR 38386, June 4, 2002; 71 FR 16668, Apr. 3, 2006; 73 FR 80612, Dec. 31, 2008; 80 FR 52991, Sept. 2, 2015; 91 FR 9448, Feb. 26, 2026]","occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.807","heading":"Installation of high-voltage transmission cables.","id":"75.807","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-I/section-75.807","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"I","subpartHeading":"Subpart I—Underground High-Voltage Distribution","text":"[Statutory Provisions]\n\nAll underground high-voltage transmission cables shall be installed only in regularly inspected air courses and haulageways, and shall be covered, buried, or placed so as to afford protection against damage, guarded where men regularly work or pass under them unless they are 6 1/2 feet or more above the floor or rail, securely anchored, properly insulated, and guarded at ends, and covered, insulated, or placed to prevent contact with trolley wires and other low-voltage circuits.","occurrenceCount":1},{"chapter":"I","heading":"Actions in response to AMS malfunction, alert, or alarm signals.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.352","part":"75","subchapter":"O","subpart":"D","id":"75.352","citation":"30 CFR 75.352","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 75.400","heading":"Accumulation of combustible materials.","id":"75.400","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-E/section-75.400","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":"Coal dust, including float coal dust deposited on rock-dusted surfaces, loose coal, and other combustible materials, shall be cleaned up and not be permitted to accumulate in active workings, or on diesel-powered and electric equipment therein.\n\n[61 FR 55527, Oct. 25, 1996]","occurrenceCount":1}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"4609496","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}