{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"4608811","name":"Spider Ridge No. 1","status":"Abandoned and Sealed","status_date":"2023-08-18","mine_type":"Underground","coal_metal":"C","commodity":"Coal (Bituminous)","state":"WV","county":"Mcdowell","nearest_town":"Keystone","operator_id":"0074803","operator_name":"Pay Car Mining, Inc.","controller_id":"0171761","controller_name":"James C  Justice III","district":"C04","office":"Beckley District","employees":0,"latitude":37.43,"longitude":-81.436944},"coverage":{"contributingSources":17,"registeredSources":20,"sourceRows":1071},"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":"4608811","name":"Spider Ridge No. 1"},"operator":{"type":"operator","id":"0074803","name":"Pay Car Mining, Inc."},"controller":{"type":"controller","id":"0171761","name":"James C  Justice III"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15343","name":"Robert L  Johnson"},"object":{"type":"mine","id":"4608811","name":"Spider Ridge No. 1"},"validFrom":"1995-12-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4608811|C15343|1995-12-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23302","name":"R & S Coal Company Inc"},"object":{"type":"mine","id":"4608811","name":"Spider Ridge No. 1"},"validFrom":"1999-11-01","validTo":"2010-08-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4608811|P23302|1999-11-01|2010-08-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15343","name":"Robert L  Johnson"},"object":{"type":"operator","id":"P23302","name":"R & S Coal Company Inc"},"validFrom":"1999-11-01","validTo":"2010-08-31","current":false,"derived":true,"evidenceMineId":"4608811","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4608811|P23302|1999-11-01|C15343|1995-12-01|95377"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C04355","name":"James C  Justice II et al"},"object":{"type":"mine","id":"4608811","name":"Spider Ridge No. 1"},"validFrom":"2006-08-22","validTo":"2009-05-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4608811|C04355|2006-08-22|2009-05-06"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0085759","name":"Mechel Oao"},"object":{"type":"mine","id":"4608811","name":"Spider Ridge No. 1"},"validFrom":"2009-05-07","validTo":"2015-02-11","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4608811|0085759|2009-05-07|2015-02-11"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0074803","name":"Pay Car Mining, Inc."},"object":{"type":"mine","id":"4608811","name":"Spider Ridge No. 1"},"validFrom":"2010-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4608811|0074803|2010-09-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0085759","name":"Mechel Oao"},"object":{"type":"operator","id":"0074803","name":"Pay Car Mining, Inc."},"validFrom":"2010-09-01","validTo":"2015-02-11","current":false,"derived":true,"evidenceMineId":"4608811","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4608811|0074803|2010-09-01|0085759|2009-05-07|13723"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C04355","name":"James C  Justice II et al"},"object":{"type":"operator","id":"0074803","name":"Pay Car Mining, Inc."},"validFrom":"2010-09-01","validTo":"2009-05-06","current":false,"derived":true,"evidenceMineId":"4608811","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4608811|0074803|2010-09-01|C04355|2006-08-22|65524"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C04355","name":"James C  Justice II et al"},"object":{"type":"mine","id":"4608811","name":"Spider Ridge No. 1"},"validFrom":"2015-02-12","validTo":"2017-06-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4608811|C04355|2015-02-12|2017-06-20"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C04355","name":"James C  Justice II et al"},"object":{"type":"operator","id":"0074803","name":"Pay Car Mining, Inc."},"validFrom":"2015-02-12","validTo":"2017-06-20","current":false,"derived":true,"evidenceMineId":"4608811","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4608811|0074803|2010-09-01|C04355|2015-02-12|65685"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0091855","name":"James C  Justice lll et al"},"object":{"type":"mine","id":"4608811","name":"Spider Ridge No. 1"},"validFrom":"2017-06-21","validTo":"2023-04-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4608811|0091855|2017-06-21|2023-04-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0091855","name":"James C  Justice lll et al"},"object":{"type":"operator","id":"0074803","name":"Pay Car Mining, Inc."},"validFrom":"2017-06-21","validTo":"2023-04-09","current":false,"derived":true,"evidenceMineId":"4608811","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4608811|0074803|2010-09-01|0091855|2017-06-21|15014"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0091855","name":"Jillean L  Justice et al"},"object":{"type":"operator","id":"0074803","name":"Pay Car Mining, Inc."},"validFrom":"2017-06-21","validTo":"2023-04-09","current":false,"derived":true,"evidenceMineId":"4608811","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4608811|0074803|2010-09-01|0091855|2017-06-21|15015"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0171761","name":"James C  Justice III"},"object":{"type":"mine","id":"4608811","name":"Spider Ridge No. 1"},"validFrom":"2023-04-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4608811|0171761|2023-04-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0171761","name":"James C  Justice III"},"object":{"type":"operator","id":"0074803","name":"Pay Car Mining, Inc."},"validFrom":"2023-04-10","validTo":null,"current":true,"derived":true,"evidenceMineId":"4608811","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4608811|0074803|2010-09-01|0171761|2023-04-10|36530"}}],"coverage":{"historyRecords":7,"edgeCount":15,"intervalAnomalies":1,"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":7,"firstDate":"2000-08-08","lastDate":"2008-05-15","metrics":{"daysLost":50,"injuries":6,"fatalities":0,"recentRows":0,"restrictedDays":0,"contractorRecords":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"124015","DOCUMENT_NO":"220081490053","ACCIDENT_DT":"05/15/2008","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"MACHINERY","ACCIDENT_TYPE":"Struck by flying object","OCCUPATION":"Continuous miner operator, Coal mole operator","NO_INJURIES":"1","DAYS_LOST":"8","NARRATIVE":"Rock hung in conveyor chain flew out striking nose. Broke nose.","sourceDate":"2008-05-15"},{"SOURCE_ROW_NUMBER":"21092","DOCUMENT_NO":"220060170071","ACCIDENT_DT":"01/09/2006","DEGREE_INJURY":"ACCIDENT ONLY","CLASSIFICATION":"FALL OF ROOF OR BACK","ACCIDENT_TYPE":"Accident type, without injuries","OCCUPATION":"NO VALUE FOUND","NO_INJURIES":"0","DAYS_LOST":"0","NARRATIVE":"ROOF FALL 10'H X 20'W X 50'L. INTERSECTION OF #2 ENTRY & 15'TO THE LEFT + RIGHT OF INTERSECTION. CAUSED BY MINING IN 3 SEAM 150' BELOW BARRIER BLOCK.","sourceDate":"2006-01-09"},{"SOURCE_ROW_NUMBER":"132722","DOCUMENT_NO":"220053420032","ACCIDENT_DT":"11/30/2005","DEGREE_INJURY":"NO DYS AWY FRM WRK,NO RSTR ACT","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":"0","NARRATIVE":"A small piece of rock 1/4 x 2 x 6 fell while pinning and cut wrist requiring 4 stitctes.","sourceDate":"2005-11-30"},{"SOURCE_ROW_NUMBER":"111198","DOCUMENT_NO":"220050770054","ACCIDENT_DT":"03/07/2005","DEGREE_INJURY":"NO DYS AWY FRM WRK,NO RSTR ACT","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Over-exertion NEC","OCCUPATION":"Section foreman, Bullgang foreman, Labor foreman, Leadman, Shift boss","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"AWKWARD STANDING POSITION - PULLED MUSCLE IN BACK LIFTING & TWISTING.  (HANDLING 5 LB. WATER HOSE.)","sourceDate":"2005-03-07"},{"SOURCE_ROW_NUMBER":"150192","DOCUMENT_NO":"220011930020","ACCIDENT_DT":"06/28/2001","DEGREE_INJURY":"NO DYS AWY FRM WRK,NO RSTR ACT","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Over-exertion in lifting objects","OCCUPATION":"Shuttle car operator, Mantrip operator, Ramcar operator, Rail runner, Buggy operator","NO_INJURIES":"1","NARRATIVE":"MAN WAS HANGING MINER CABLE, STRAINED BACK MUSCLE.","sourceDate":"2001-06-28"},{"SOURCE_ROW_NUMBER":"223237","DOCUMENT_NO":"220003620019","ACCIDENT_DT":"12/06/2000","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"HANDTOOLS (NONPOWERED)","ACCIDENT_TYPE":"Over-exertion in lifting objects","OCCUPATION":"Continuous miner operator, Coal mole operator","NO_INJURIES":"1","DAYS_LOST":"42","NARRATIVE":"EE WAS PRYING & LIFTING WITH SLATE BAR & STRAINED BACK.","sourceDate":"2000-12-06"},{"SOURCE_ROW_NUMBER":"158743","DOCUMENT_NO":"220002270037","ACCIDENT_DT":"08/08/2000","DEGREE_INJURY":"NO DYS AWY FRM WRK,NO RSTR ACT","CLASSIFICATION":"HANDTOOLS (NONPOWERED)","ACCIDENT_TYPE":"Struck by... NEC","OCCUPATION":"Continuous miner operator, Coal mole operator","NO_INJURIES":"1","NARRATIVE":"WRENCH SLIPPED HWIOLE TIGHTENING MINER DRUM OIL PLUG.","sourceDate":"2000-08-08"}]},{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"2023-08-18","lastDate":"2023-08-18","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":105,"firstDate":"2000-02-17","lastDate":"2011-01-14","metrics":{"ss":26,"delinquent":105,"recentRows":0,"paidPenalty":13348.06,"proposedPenalty":19068,"currentAssessment":14072},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1790866","VIOLATION_NO":"8120329","ISSUE_DT":"01/14/2011","CFR_STANDARD_CD":"75.1731(b)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2011-01-14"},{"SOURCE_ROW_NUMBER":"1790865","VIOLATION_NO":"8120328","ISSUE_DT":"01/14/2011","CFR_STANDARD_CD":"75.333(d)(1)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2011-01-14"},{"SOURCE_ROW_NUMBER":"870707","VIOLATION_NO":"6620442","ISSUE_DT":"04/08/2009","CFR_STANDARD_CD":"75.370(a)(1)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Order","PROPOSED_PENALTY_AMT":"4000.00","CURRENT_ASSESSMENT_AMT":"500.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2009-04-08"},{"SOURCE_ROW_NUMBER":"868501","VIOLATION_NO":"8072999","ISSUE_DT":"01/07/2009","CFR_STANDARD_CD":"75.310(a)(4)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2009-01-07"},{"SOURCE_ROW_NUMBER":"868500","VIOLATION_NO":"8072998","ISSUE_DT":"01/07/2009","CFR_STANDARD_CD":"77.705","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"285.00","CURRENT_ASSESSMENT_AMT":"285.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2009-01-07"},{"SOURCE_ROW_NUMBER":"868499","VIOLATION_NO":"8072997","ISSUE_DT":"01/07/2009","CFR_STANDARD_CD":"77.400(a)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"285.00","CURRENT_ASSESSMENT_AMT":"285.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2009-01-07"},{"SOURCE_ROW_NUMBER":"1770005","VIOLATION_NO":"8072994","ISSUE_DT":"12/29/2008","CFR_STANDARD_CD":"75.1702","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"162.00","CURRENT_ASSESSMENT_AMT":"162.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2008-12-29"},{"SOURCE_ROW_NUMBER":"1770004","VIOLATION_NO":"8072993","ISSUE_DT":"12/29/2008","CFR_STANDARD_CD":"75.333(h)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"362.00","CURRENT_ASSESSMENT_AMT":"362.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2008-12-29"},{"SOURCE_ROW_NUMBER":"1770003","VIOLATION_NO":"8072991","ISSUE_DT":"12/29/2008","CFR_STANDARD_CD":"75.364(b)(1)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"2000.00","CURRENT_ASSESSMENT_AMT":"1000.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2008-12-29"},{"SOURCE_ROW_NUMBER":"1770002","VIOLATION_NO":"8069510","ISSUE_DT":"12/29/2008","CFR_STANDARD_CD":"75.364(b)(2)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"946.00","CURRENT_ASSESSMENT_AMT":"450.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2008-12-29"},{"SOURCE_ROW_NUMBER":"1769996","VIOLATION_NO":"6620403","ISSUE_DT":"12/22/2008","CFR_STANDARD_CD":"71.220(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2008-12-22"},{"SOURCE_ROW_NUMBER":"1770001","VIOLATION_NO":"8069486","ISSUE_DT":"11/13/2008","CFR_STANDARD_CD":"75.380(d)(1)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"108.00","CURRENT_ASSESSMENT_AMT":"108.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2008-11-13"}]},{"id":"msha-civil-penalty-dockets-decisions","name":"Civil Penalty Dockets and Decisions","domains":["compliance","legal"],"products":["docket lineage","decision outcomes","citation packet precedent"],"rowCount":6,"firstDate":"2010-08-25","lastDate":"2011-04-06","metrics":{"appeals":0,"decisions":6,"recentRows":0,"decisionPenalty":3230,"originalPenalty":10226},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"241202","VIOLATION_NO":"8072991","DOCKET_NO":"WEVA 2009-948","DECISION_DT":"04/06/2011","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"2000.00","DECISION_PENALTY_AMT":"1000.00","JUDGE_FIRST_NAME":"N/A","sourceDate":"2011-04-06"},{"SOURCE_ROW_NUMBER":"240509","VIOLATION_NO":"8069510","DOCKET_NO":"WEVA 2009-949","DECISION_DT":"04/06/2011","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"946.00","DECISION_PENALTY_AMT":"450.00","JUDGE_FIRST_NAME":"N/A","sourceDate":"2011-04-06"},{"SOURCE_ROW_NUMBER":"239967","VIOLATION_NO":"8072992","DOCKET_NO":"WEVA 2009-948","DECISION_DT":"04/06/2011","DECISION_TYPE_CODE_DESC":"Withdrawal","ORIGINAL_PENALTY_AMT":"2000.00","DECISION_PENALTY_AMT":"0.00","JUDGE_FIRST_NAME":"N/A","sourceDate":"2011-04-06"},{"SOURCE_ROW_NUMBER":"32471","VIOLATION_NO":"6622625","DOCKET_NO":"WEVA 2009-451","DECISION_DT":"01/04/2011","DECISION_TYPE_CODE_DESC":"Default","ORIGINAL_PENALTY_AMT":"334.00","DECISION_PENALTY_AMT":"334.00","JUDGE_FIRST_NAME":"Robert","JUDGE_LAST_NAME":"Lesnick","sourceDate":"2011-01-04"},{"SOURCE_ROW_NUMBER":"32306","VIOLATION_NO":"6622627","DOCKET_NO":"WEVA 2009-450","DECISION_DT":"01/04/2011","DECISION_TYPE_CODE_DESC":"Default","ORIGINAL_PENALTY_AMT":"946.00","DECISION_PENALTY_AMT":"946.00","JUDGE_FIRST_NAME":"Robert","JUDGE_LAST_NAME":"Lesnick","sourceDate":"2011-01-04"},{"SOURCE_ROW_NUMBER":"247052","VIOLATION_NO":"6620442","DOCKET_NO":"WEVA 2009-1583","DECISION_DT":"08/25/2010","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"4000.00","DECISION_PENALTY_AMT":"500.00","JUDGE_FIRST_NAME":"Robert","JUDGE_LAST_NAME":"Lesnick","sourceDate":"2010-08-25"}]},{"id":"msha-coal-dust-samples","name":"Coal Dust Samples","domains":["health","safety"],"products":["respirable dust trends","CPDM coverage","void patterns","occupation exposure"],"rowCount":531,"firstDate":"2000-02-24","lastDate":"2008-11-13","metrics":{"recentRows":0,"cpdmSamples":0,"voidSamples":23,"validSamples":508,"maxConcentration":98.57,"concentrationTotal":276.797},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"516875","CASS_NUM":"50960844","SMP_TAKEN_DT":"11/13/2008","CONC":".754","SMP_TYPE_CD_DESC":"DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"BIMONTHLY CYCLE/TRANSITION PERIOD SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"CONTINUOUS MINER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2008-11-13"},{"SOURCE_ROW_NUMBER":"1485167","CASS_NUM":"50960797","SMP_TAKEN_DT":"11/12/2008","CONC":".457","SMP_TYPE_CD_DESC":"DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"BIMONTHLY CYCLE/TRANSITION PERIOD SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"CONTINUOUS MINER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2008-11-12"},{"SOURCE_ROW_NUMBER":"856804","CASS_NUM":"50982744","SMP_TAKEN_DT":"11/11/2008","CONC":".862","SMP_TYPE_CD_DESC":"DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"BIMONTHLY CYCLE/TRANSITION PERIOD SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"CONTINUOUS MINER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2008-11-11"},{"SOURCE_ROW_NUMBER":"782319","CASS_NUM":"50960802","SMP_TAKEN_DT":"11/10/2008","CONC":"1.07","SMP_TYPE_CD_DESC":"DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"BIMONTHLY CYCLE/TRANSITION PERIOD SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"CONTINUOUS MINER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2008-11-10"},{"SOURCE_ROW_NUMBER":"1308406","CASS_NUM":"50960798","SMP_TAKEN_DT":"10/17/2008","CONC":".221","SMP_TYPE_CD_DESC":"DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"BIMONTHLY CYCLE/TRANSITION PERIOD SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"CONTINUOUS MINER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2008-10-17"},{"SOURCE_ROW_NUMBER":"1322759","CASS_NUM":"50960807","SMP_TAKEN_DT":"10/9/2008","CONC":".508","SMP_TYPE_CD_DESC":"DESIGNATED AREA","SMP_USE_CD_DESC":"BIMONTHLY CYCLE/TRANSITION PERIOD SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"OCCUPATION CODE NOT FOUND","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2008-10-09"},{"SOURCE_ROW_NUMBER":"133638","CASS_NUM":"50960806","SMP_TAKEN_DT":"10/3/2008","CONC":".517","SMP_TYPE_CD_DESC":"DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"BIMONTHLY CYCLE/TRANSITION PERIOD SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"CONTINUOUS MINER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2008-10-03"},{"SOURCE_ROW_NUMBER":"1464679","CASS_NUM":"50960826","SMP_TAKEN_DT":"10/2/2008","CONC":".748","SMP_TYPE_CD_DESC":"DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"BIMONTHLY CYCLE/TRANSITION PERIOD SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"CONTINUOUS MINER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2008-10-02"},{"SOURCE_ROW_NUMBER":"1133639","CASS_NUM":"50960834","SMP_TAKEN_DT":"10/1/2008","CONC":"1.115","SMP_TYPE_CD_DESC":"DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"BIMONTHLY CYCLE/TRANSITION PERIOD SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"CONTINUOUS MINER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2008-10-01"},{"SOURCE_ROW_NUMBER":"1591666","CASS_NUM":"50960835","SMP_TAKEN_DT":"9/30/2008","CONC":"2.025","SMP_TYPE_CD_DESC":"DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"VOID SAMPLE","VOID_CD_DESC":"CONTAMINATED","OCC_CD_DESC":"CONTINUOUS MINER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2008-09-30"},{"SOURCE_ROW_NUMBER":"685638","CASS_NUM":"50960816","SMP_TAKEN_DT":"9/29/2008","CONC":".393","SMP_TYPE_CD_DESC":"DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"BIMONTHLY CYCLE/TRANSITION PERIOD SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"CONTINUOUS MINER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2008-09-29"},{"SOURCE_ROW_NUMBER":"1250673","CASS_NUM":"57653878","SMP_TAKEN_DT":"9/15/2008","CONC":".173","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":"TRACTOR OPERATOR/MOTORMAN","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2008-09-15"}]},{"id":"msha-conferences","name":"Conferences","domains":["compliance","legal"],"products":["conference history","post-issuance changes","citation lifecycle"],"rowCount":1,"firstDate":"2006-02-15","lastDate":"2006-02-15","metrics":{"linkedIssuances":1},"periods":{},"recentRecords":[]},{"id":"msha-contested-violations","name":"Contested Violations","domains":["compliance","legal"],"products":["contest status","time to resolution","contested-rate context"],"rowCount":6,"firstDate":"2008-09-12","lastDate":"2009-04-08","metrics":{"decisions":6,"ssChanged":5,"recentRows":0,"decisionPenalty":3230,"proposedPenalty":10226},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"68521","CITATION_NO":"6620442","CITATION_ISSUE_DT":"04/08/2009","DOCKET_NO":"WEVA 2009-1583","DECISION_DT":"08/25/2010","CFR_STANDARD_CODE":"75.370(a)(1)","ORIGINAL_SIG_SUB_IND":"N","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"4000.00","DECISION_PENALTY_AMT":"500.00","sourceDate":"2009-04-08"},{"SOURCE_ROW_NUMBER":"409019","CITATION_NO":"8069510","CITATION_ISSUE_DT":"12/29/2008","DOCKET_NO":"WEVA 2009-949","DECISION_DT":"04/06/2011","CFR_STANDARD_CODE":"75.364(b)(2)","ORIGINAL_SIG_SUB_IND":"Y","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"946.00","DECISION_PENALTY_AMT":"450.00","sourceDate":"2008-12-29"},{"SOURCE_ROW_NUMBER":"125743","CITATION_NO":"8072992","CITATION_ISSUE_DT":"12/29/2008","DOCKET_NO":"WEVA 2009-948","DECISION_DT":"04/06/2011","CFR_STANDARD_CODE":"75.360(b)(5)","ORIGINAL_SIG_SUB_IND":"Y","PROPOSED_PENALTY_AMT":"2000.00","DECISION_PENALTY_AMT":".00","sourceDate":"2008-12-29"},{"SOURCE_ROW_NUMBER":"13167","CITATION_NO":"8072991","CITATION_ISSUE_DT":"12/29/2008","DOCKET_NO":"WEVA 2009-948","DECISION_DT":"04/06/2011","CFR_STANDARD_CODE":"75.364(b)(1)","ORIGINAL_SIG_SUB_IND":"Y","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"2000.00","DECISION_PENALTY_AMT":"1000.00","sourceDate":"2008-12-29"},{"SOURCE_ROW_NUMBER":"403363","CITATION_NO":"6622625","CITATION_ISSUE_DT":"09/12/2008","DOCKET_NO":"WEVA 2009-451","DECISION_DT":"01/04/2011","CFR_STANDARD_CODE":"77.404(a)","ORIGINAL_SIG_SUB_IND":"Y","PROPOSED_PENALTY_AMT":"334.00","DECISION_PENALTY_AMT":"334.00","sourceDate":"2008-09-12"},{"SOURCE_ROW_NUMBER":"235793","CITATION_NO":"6622627","CITATION_ISSUE_DT":"09/12/2008","DOCKET_NO":"WEVA 2009-450","DECISION_DT":"01/04/2011","CFR_STANDARD_CODE":"77.410(c)","ORIGINAL_SIG_SUB_IND":"Y","PROPOSED_PENALTY_AMT":"946.00","DECISION_PENALTY_AMT":"946.00","sourceDate":"2008-09-12"}]},{"id":"msha-contractor-production-quarterly","name":"Contractor Employment and Production — Quarterly","domains":["contractors","production","safety"],"products":["contractor exposure denominator","productivity","presence windows"],"rowCount":72,"firstDate":null,"lastDate":null,"metrics":{"linkedContractors":1,"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":10,"firstDate":null,"lastDate":null,"metrics":{"linkedContractors":1,"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":7,"firstDate":"1999-11-01","lastDate":"2010-09-01","metrics":{"recentRows":0,"currentOperatorTenures":6,"completedOperatorTenures":1},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":108,"firstDate":"2000-01-19","lastDate":"2012-02-29","metrics":{"inspectors":136,"recentRows":0,"onSiteHours":1304.5,"inspectionHours":2449.75,"inspectionSamples":88},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"453781","EVENT_NO":"6296516","INSPECTION_BEGIN_DT":"02/29/2012","INSPECTION_END_DT":"02/29/2012","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.25","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2012-02-29"},{"SOURCE_ROW_NUMBER":"641767","EVENT_NO":"6296501","INSPECTION_BEGIN_DT":"12/13/2011","INSPECTION_END_DT":"12/14/2011","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":".25","sourceDate":"2011-12-13"},{"SOURCE_ROW_NUMBER":"520839","EVENT_NO":"6288044","INSPECTION_BEGIN_DT":"08/23/2011","INSPECTION_END_DT":"08/24/2011","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2011-08-23"},{"SOURCE_ROW_NUMBER":"19247","EVENT_NO":"6293410","INSPECTION_BEGIN_DT":"06/03/2011","INSPECTION_END_DT":"06/03/2011","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"3.5","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2011-06-03"},{"SOURCE_ROW_NUMBER":"514189","EVENT_NO":"6288938","INSPECTION_BEGIN_DT":"01/11/2011","INSPECTION_END_DT":"01/11/2011","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":".75","sourceDate":"2011-01-11"},{"SOURCE_ROW_NUMBER":"103803","EVENT_NO":"6292119","INSPECTION_BEGIN_DT":"12/20/2010","INSPECTION_END_DT":"12/22/2010","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"1.75","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2010-12-20"},{"SOURCE_ROW_NUMBER":"502066","EVENT_NO":"6285873","INSPECTION_BEGIN_DT":"07/13/2010","INSPECTION_END_DT":"07/13/2010","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3.5","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2010-07-13"},{"SOURCE_ROW_NUMBER":"220459","EVENT_NO":"6287381","INSPECTION_BEGIN_DT":"04/27/2010","INSPECTION_END_DT":"04/27/2010","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"3.5","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2010-04-27"},{"SOURCE_ROW_NUMBER":"1070149","EVENT_NO":"6287375","INSPECTION_BEGIN_DT":"03/11/2010","INSPECTION_END_DT":"03/11/2010","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"1.75","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2010-03-11"},{"SOURCE_ROW_NUMBER":"904215","EVENT_NO":"6285855","INSPECTION_BEGIN_DT":"03/10/2010","INSPECTION_END_DT":"03/10/2010","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.25","SUM_TOTAL_ON_SITE_HOURS":".25","sourceDate":"2010-03-10"},{"SOURCE_ROW_NUMBER":"161751","EVENT_NO":"6287408","INSPECTION_BEGIN_DT":"12/08/2009","INSPECTION_END_DT":"12/30/2009","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2009-12-08"},{"SOURCE_ROW_NUMBER":"126879","EVENT_NO":"6287353","INSPECTION_BEGIN_DT":"09/09/2009","INSPECTION_END_DT":"09/09/2009","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4.5","SUM_TOTAL_ON_SITE_HOURS":"1.5","sourceDate":"2009-09-09"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":48,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2011-Q1":{"hours":0,"employees":0,"production":0},"2010-Q2":{"hours":0,"employees":0,"production":0},"2010-Q1":{"hours":0,"employees":0,"production":0},"2009-Q4":{"hours":0,"employees":0,"production":0},"2009-Q3":{"hours":160,"employees":2,"production":0},"2009-Q2":{"hours":800,"employees":2,"production":0},"2008-Q4":{"hours":2398,"employees":7,"production":13677},"2008-Q3":{"hours":4020,"employees":8,"production":25677},"2008-Q2":{"hours":4334,"employees":8,"production":29859},"2008-Q1":{"hours":4470,"employees":8,"production":28725},"2007-Q4":{"hours":4196,"employees":8,"production":29145},"2007-Q3":{"hours":3213,"employees":8,"production":20836}},"recentRecords":[]},{"id":"msha-mine-production-yearly","name":"Mine Employment and Production — Yearly","domains":["production","safety","compliance"],"products":["annual trend","backfill","quarterly reconciliation"],"rowCount":10,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2000":{"hours":13200,"employees":7,"production":63531},"2001":{"hours":12433,"employees":6,"production":43573},"2002":{"hours":8846,"employees":7,"production":49905},"2003":{"hours":13299,"employees":7,"production":64652},"2004":{"hours":17788,"employees":8,"production":87169},"2005":{"hours":16092,"employees":7,"production":85686},"2006":{"hours":17221,"employees":8,"production":115772},"2007":{"hours":14879,"employees":8,"production":105113},"2008":{"hours":15222,"employees":8,"production":97938},"2009":{"hours":960,"employees":2,"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":28,"firstDate":"2001-06-05","lastDate":"2008-02-20","metrics":{"recentRows":0,"doseOver100":1,"actDoseTotal":1385,"pelDoseTotal":990},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"245486","EVENT_NO":"4121254","SURVEY_DATE":"02/20/2008","OCCUPATION_CD_DESC":"ROOF BOLTER (SINGLE HEAD)","MACHINE_CD":"30","MANUFACTURER_CD":"039","ACT_DOSE_85":"48","PEL_DOSE_90":"13","SURVEY_TYPE":"I","sourceDate":"2008-02-20"},{"SOURCE_ROW_NUMBER":"245485","EVENT_NO":"4121254","SURVEY_DATE":"02/20/2008","OCCUPATION_CD_DESC":"TRACTOR OPERATOR/MOTORMAN","MACHINE_CD":"38","MANUFACTURER_CD":"098","ACT_DOSE_85":"60","PEL_DOSE_90":"58","SURVEY_TYPE":"I","sourceDate":"2008-02-20"},{"SOURCE_ROW_NUMBER":"245484","EVENT_NO":"4121254","SURVEY_DATE":"02/20/2008","OCCUPATION_CD_DESC":"TRACTOR OPERATOR/MOTORMAN","MACHINE_CD":"38","MANUFACTURER_CD":"098","ACT_DOSE_85":"94","PEL_DOSE_90":"82","SURVEY_TYPE":"I","sourceDate":"2008-02-20"},{"SOURCE_ROW_NUMBER":"245483","EVENT_NO":"4121254","SURVEY_DATE":"02/20/2008","OCCUPATION_CD_DESC":"ROOF BOLTER (SINGLE HEAD)","MACHINE_CD":"30","MANUFACTURER_CD":"039","ACT_DOSE_85":"32","PEL_DOSE_90":"8","SURVEY_TYPE":"I","sourceDate":"2008-02-20"},{"SOURCE_ROW_NUMBER":"245482","EVENT_NO":"4121254","SURVEY_DATE":"02/20/2008","OCCUPATION_CD_DESC":"CONTINUOUS MINER OPERATOR","MACHINE_CD":"06","MANUFACTURER_CD":"058","ACT_DOSE_85":"101","PEL_DOSE_90":"87","SURVEY_TYPE":"I","sourceDate":"2008-02-20"},{"SOURCE_ROW_NUMBER":"245491","EVENT_NO":"4179186","SURVEY_DATE":"09/06/2006","OCCUPATION_CD_DESC":"SCOOP CAR OPERATOR","MACHINE_CD":"38","MANUFACTURER_CD":"098","ACT_DOSE_85":"46","PEL_DOSE_90":"23","SURVEY_TYPE":"I","sourceDate":"2006-09-06"},{"SOURCE_ROW_NUMBER":"245490","EVENT_NO":"4179186","SURVEY_DATE":"09/06/2006","OCCUPATION_CD_DESC":"TRACTOR OPERATOR/MOTORMAN","MACHINE_CD":"40","MANUFACTURER_CD":"053","ACT_DOSE_85":"63","PEL_DOSE_90":"42","SURVEY_TYPE":"I","sourceDate":"2006-09-06"},{"SOURCE_ROW_NUMBER":"245489","EVENT_NO":"4179186","SURVEY_DATE":"09/06/2006","OCCUPATION_CD_DESC":"TRACTOR OPERATOR/MOTORMAN","MACHINE_CD":"40","MANUFACTURER_CD":"053","ACT_DOSE_85":"41","PEL_DOSE_90":"30","SURVEY_TYPE":"I","sourceDate":"2006-09-06"},{"SOURCE_ROW_NUMBER":"245488","EVENT_NO":"4179186","SURVEY_DATE":"09/06/2006","OCCUPATION_CD_DESC":"ROOF BOLTER (TWIN HEAD) (RETURN SIDE)","MACHINE_CD":"30","MANUFACTURER_CD":"038","ACT_DOSE_85":"75","PEL_DOSE_90":"57","SURVEY_TYPE":"I","sourceDate":"2006-09-06"},{"SOURCE_ROW_NUMBER":"245487","EVENT_NO":"4179186","SURVEY_DATE":"09/06/2006","OCCUPATION_CD_DESC":"CONTINUOUS MINER OPERATOR","MACHINE_CD":"06","MANUFACTURER_CD":"058","ACT_DOSE_85":"65","PEL_DOSE_90":"60","SURVEY_TYPE":"I","sourceDate":"2006-09-06"},{"SOURCE_ROW_NUMBER":"245481","EVENT_NO":"4108794","SURVEY_DATE":"02/14/2005","OCCUPATION_CD_DESC":"TRACTOR OPERATOR/MOTORMAN","MACHINE_CD":"38","MANUFACTURER_CD":"053","ACT_DOSE_85":"38","PEL_DOSE_90":"31","SURVEY_TYPE":"I","sourceDate":"2005-02-14"},{"SOURCE_ROW_NUMBER":"245480","EVENT_NO":"4108794","SURVEY_DATE":"02/14/2005","OCCUPATION_CD_DESC":"CONTINUOUS MINER OPERATOR","MACHINE_CD":"06","MANUFACTURER_CD":"058","ACT_DOSE_85":"48","PEL_DOSE_90":"37","SURVEY_TYPE":"I","sourceDate":"2005-02-14"}]},{"id":"msha-quartz-samples","name":"Quartz Samples — Coal","domains":["health","safety"],"products":["quartz exposure trends","occupation context","applicable-rule linkage"],"rowCount":25,"firstDate":"2000-02-24","lastDate":"2007-02-20","metrics":{"recentRows":0,"voidSamples":2,"maxQuartzPct":9.8,"validSamples":23,"quartzPctTotal":119.1},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"63740","CASSETTE_NO":"57619625","SAMPLE_DT":"02/20/2007","QUARTZ_PCT":"03.2","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2007-02-20"},{"SOURCE_ROW_NUMBER":"6057","CASSETTE_NO":"50759219","SAMPLE_DT":"07/13/2005","OCC_CODE_DESC":"OCCUPATION CODE NOT FOUND","SAMPLE_TYPE_DESC":"DESIGNATED AREA","VOID_CD_DESC":"INSUFFICIENT WEIGHT GAIN","sourceDate":"2005-07-13"},{"SOURCE_ROW_NUMBER":"62116","CASSETTE_NO":"50752446","SAMPLE_DT":"06/22/2005","QUARTZ_PCT":"01.6","OCC_CODE_DESC":"OCCUPATION CODE NOT FOUND","SAMPLE_TYPE_DESC":"DESIGNATED AREA","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2005-06-22"},{"SOURCE_ROW_NUMBER":"32291","CASSETTE_NO":"57567745","SAMPLE_DT":"06/09/2005","QUARTZ_PCT":"06.3","OCC_CODE_DESC":"OCCUPATION CODE NOT FOUND","SAMPLE_TYPE_DESC":"DESIGNATED AREA","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2005-06-09"},{"SOURCE_ROW_NUMBER":"10910","CASSETTE_NO":"57567751","SAMPLE_DT":"06/09/2005","QUARTZ_PCT":"04.7","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2005-06-09"},{"SOURCE_ROW_NUMBER":"146433","CASSETTE_NO":"57541021","SAMPLE_DT":"05/10/2005","QUARTZ_PCT":"04.4","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2005-05-10"},{"SOURCE_ROW_NUMBER":"61999","CASSETTE_NO":"57541058","SAMPLE_DT":"02/14/2005","QUARTZ_PCT":"04.6","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2005-02-14"},{"SOURCE_ROW_NUMBER":"24421","CASSETTE_NO":"57541144","SAMPLE_DT":"01/21/2005","QUARTZ_PCT":"04.7","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2005-01-21"},{"SOURCE_ROW_NUMBER":"106063","CASSETTE_NO":"57489156","SAMPLE_DT":"10/06/2004","QUARTZ_PCT":"04.7","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2004-10-06"},{"SOURCE_ROW_NUMBER":"144728","CASSETTE_NO":"57489253","SAMPLE_DT":"08/24/2004","QUARTZ_PCT":"04.7","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2004-08-24"},{"SOURCE_ROW_NUMBER":"103626","CASSETTE_NO":"57464179","SAMPLE_DT":"02/03/2004","QUARTZ_PCT":"03.7","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2004-02-03"},{"SOURCE_ROW_NUMBER":"139248","CASSETTE_NO":"57464275","SAMPLE_DT":"12/10/2003","QUARTZ_PCT":"03.2","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2003-12-10"}]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":105,"firstDate":"2000-02-17","lastDate":"2009-04-08","metrics":{"ss":26,"amountDue":13872,"contested":5,"amountPaid":13148.06,"recentRows":0,"section104d":2,"unterminated":1,"proposedPenalty":18868},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"2799783","VIOLATION_NO":"6620442","VIOLATION_ISSUE_DT":"04/08/2009","SIG_SUB":"N","PART_SECTION":"75.370(a)(1)","CIT_ORD_SAFE":"Order","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"03/06/2025","PROPOSED_PENALTY":"4000","AMOUNT_DUE":"500","AMOUNT_PAID":"500","CONTESTED_IND":"Y","DOCKET_NO":"WEVA 2009-1583","sourceDate":"2009-04-08"},{"SOURCE_ROW_NUMBER":"2799770","VIOLATION_NO":"8072999","VIOLATION_ISSUE_DT":"01/07/2009","SIG_SUB":"N","PART_SECTION":"75.310(a)(4)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"01/07/2009","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2009-01-07"},{"SOURCE_ROW_NUMBER":"2799769","VIOLATION_NO":"8072998","VIOLATION_ISSUE_DT":"01/07/2009","SIG_SUB":"Y","PART_SECTION":"77.705","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"01/13/2009","PROPOSED_PENALTY":"285","AMOUNT_DUE":"285","AMOUNT_PAID":"285","CONTESTED_IND":"N","sourceDate":"2009-01-07"},{"SOURCE_ROW_NUMBER":"2799768","VIOLATION_NO":"8072997","VIOLATION_ISSUE_DT":"01/07/2009","SIG_SUB":"Y","PART_SECTION":"77.400(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Permanent","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"01/13/2009","PROPOSED_PENALTY":"285","AMOUNT_DUE":"285","AMOUNT_PAID":"285","CONTESTED_IND":"N","sourceDate":"2009-01-07"},{"SOURCE_ROW_NUMBER":"2799855","VIOLATION_NO":"8072994","VIOLATION_ISSUE_DT":"12/29/2008","SIG_SUB":"N","PART_SECTION":"75.1702","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"8","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"12/29/2008","PROPOSED_PENALTY":"162","AMOUNT_DUE":"162","AMOUNT_PAID":"162","CONTESTED_IND":"N","sourceDate":"2008-12-29"},{"SOURCE_ROW_NUMBER":"2799854","VIOLATION_NO":"8072993","VIOLATION_ISSUE_DT":"12/29/2008","SIG_SUB":"Y","PART_SECTION":"75.333(h)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"3","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"04/08/2009","PROPOSED_PENALTY":"362","AMOUNT_DUE":"362","AMOUNT_PAID":"362","CONTESTED_IND":"N","sourceDate":"2008-12-29"},{"SOURCE_ROW_NUMBER":"2799853","VIOLATION_NO":"8072991","VIOLATION_ISSUE_DT":"12/29/2008","SIG_SUB":"N","PART_SECTION":"75.364(b)(1)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"HighNegligence","TERMINATION_DT":"12/29/2008","PROPOSED_PENALTY":"2000","AMOUNT_DUE":"1000","AMOUNT_PAID":"1000","CONTESTED_IND":"Y","DOCKET_NO":"WEVA 2009-948","sourceDate":"2008-12-29"},{"SOURCE_ROW_NUMBER":"2799852","VIOLATION_NO":"8069510","VIOLATION_ISSUE_DT":"12/29/2008","SIG_SUB":"N","PART_SECTION":"75.364(b)(2)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"HighNegligence","TERMINATION_DT":"12/29/2008","PROPOSED_PENALTY":"946","AMOUNT_DUE":"450","AMOUNT_PAID":"450","CONTESTED_IND":"Y","DOCKET_NO":"WEVA 2009-949","sourceDate":"2008-12-29"},{"SOURCE_ROW_NUMBER":"2799846","VIOLATION_NO":"6620403","VIOLATION_ISSUE_DT":"12/22/2008","SIG_SUB":"N","PART_SECTION":"71.220(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"12/22/2008","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2008-12-22"},{"SOURCE_ROW_NUMBER":"2799851","VIOLATION_NO":"8069486","VIOLATION_ISSUE_DT":"11/13/2008","SIG_SUB":"N","PART_SECTION":"75.380(d)(1)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"7","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"11/21/2008","PROPOSED_PENALTY":"108","AMOUNT_DUE":"108","AMOUNT_PAID":"108","CONTESTED_IND":"N","sourceDate":"2008-11-13"},{"SOURCE_ROW_NUMBER":"2799850","VIOLATION_NO":"8069485","VIOLATION_ISSUE_DT":"11/13/2008","SIG_SUB":"N","PART_SECTION":"75.400","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"2","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"11/21/2008","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2008-11-13"},{"SOURCE_ROW_NUMBER":"2799849","VIOLATION_NO":"8069484","VIOLATION_ISSUE_DT":"11/13/2008","SIG_SUB":"Y","PART_SECTION":"75.1722(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Permanent","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"11/13/2008","PROPOSED_PENALTY":"334","AMOUNT_DUE":"334","AMOUNT_PAID":"334","CONTESTED_IND":"N","sourceDate":"2008-11-13"}]}],"safety":{"href":"/api/v1/mines/4608811/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4608811/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 75.370","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","heading":"Installation of main mine fans.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.310","part":"75","subchapter":"O","subpart":"D","id":"75.310","citation":"30 CFR 75.310","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","heading":"Guy wires; grounding.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-H/section-77.705","part":"77","subchapter":"O","subpart":"H","id":"77.705","citation":"30 CFR 77.705","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","partHeading":"PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 77.400","heading":"Mechanical equipment guards.","id":"77.400","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.400","part":"77","partHeading":"PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"E","subpartHeading":"Subpart E—Safeguards for Mechanical Equipment","text":"(a) Gears; sprockets; chains; drive, head, tail, and takeup pulleys; flywheels; couplings; shafts; sawblades; fan inlets; and similar exposed moving machine parts which may be contacted by persons, and which may cause injury to persons shall be guarded.\n\n(b) Overhead belts shall be guarded if the whipping action from a broken line would be hazardous to persons below.\n\n(c) Guards at conveyor-drive, conveyor-head, and conveyor-tail pulleys shall extend a distance sufficient to prevent a person from reaching behind the guard and becoming caught between the belt and the pulley.\n\n(d) Except when testing the machinery, guards shall be securely in place while machinery is being operated.","occurrenceCount":1},{"chapter":"I","heading":"Smoking; prohibition.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1702","part":"75","subchapter":"O","subpart":"R","id":"75.1702","citation":"30 CFR 75.1702","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 75.333","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 75.364","heading":"Weekly examination.","id":"75.364","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.364","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) Worked-out areas. (1) At least every 7 days, a certified person shall examine unsealed worked-out areas where no pillars have been recovered by traveling to the area of deepest penetration; measuring methane and oxygen concentrations and air quantities and making tests to determine if the air is moving in the proper direction in the area. The locations of measurement points where tests and measurements will be performed shall be included in the mine ventilation plan and shall be adequate in number and location to assure ventilation and air quality in the area. Air quantity measurements shall also be made where the air enters and leaves the worked-out area. An alternative method of evaluating the ventilation of the area may be approved in the ventilation plan.\n\n(2) At least every 7 days, a certified person shall evaluate the effectiveness of bleeder systems required by § 75.334 as follows:\n\n(i) Measurements of methane and oxygen concentrations and air quantity and a test to determine if the air is moving in its proper direction shall be made where air enters the worked-out area.\n\n(ii) Measurements of methane and oxygen concentrations and air quantity and a test to determine if the air is moving in the proper direction shall be made immediately before the air enters a return split of air.\n\n(iii) At least one entry of each set of bleeder entries used as part of a bleeder system under § 75.334 shall be traveled in its entirety. Measurements of methane and oxygen concentrations and air quantities and a test to determine if the air is moving in the proper direction shall be made at the measurement point locations specified in the mine ventilation plan to determine the effectiveness of the bleeder system.\n\n(iv) In lieu of the requirements of paragraphs (a)(2)(i) and (iii) of this section, an alternative method of evaluation may be specified in the ventilation plan provided the alternative method results in proper evaluation of the effectiveness of the bleeder system.\n\n(b) Hazardous conditions and violations of mandatory health or safety standards. At least every 7 days, an examination for hazardous conditions and violations of the mandatory health or safety standards referenced in paragraph (b)(8) of this section shall be made by a certified person designated by the operator at the following locations:\n\n(1) In at least one entry of each intake air course, in its entirety, so that the entire air course is traveled.\n\n(2) In at least one entry of each return air course, in its entirety, so that the entire air course is traveled.\n\n(3) In each longwall or shortwall travelway in its entirety, so that the entire travelway is traveled.\n\n(4) At each seal along return and bleeder air courses and at each seal along intake air courses not examined under § 75.360(b)(5).\n\n(5) In each escapeway so that the entire escapeway is traveled.\n\n(6) On each working section not examined under § 75.360(b)(3) during the previous 7 days.\n\n(7) At each water pump not examined during a preshift examination conducted during the previous 7 days.\n\n(8) Weekly 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; and\n\n(iv) § 75.1403—maintenance of 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(c) Measurements and tests. At least every 7 days, a certified person shall—\n\n(1) Determine the volume of air entering the main intakes and in each intake split;\n\n(2) Determine the volume of air and test for methane in the last open crosscut in any pair or set of developing entries or rooms, in the return of each split of air immediately before it enters the main returns, and where the air leaves the main returns; and\n\n(3) Test for methane in the return entry nearest each set of seals immediately after the air passes the seals.\n\n(d) Hazardous conditions shall be corrected immediately. If the condition creates an imminent danger, everyone except those persons referred to in section 104(c) of the Act shall be withdrawn from the area affected to a safe area until the hazardous condition is corrected. Any violation of the nine mandatory health or safety standards found during a weekly examination shall be corrected.\n\n(e) The weekly examination may be conducted at the same time as the preshift or on-shift examinations.\n\n(f) (1) The weekly examination is not required during any 7 day period in which no one enters any underground area of the mine.\n\n(2) Except for certified persons required to make examinations, no one shall enter any underground area of the mine if a weekly examination has not been completed within the previous 7 days.\n\n(g) Certification. The person making the weekly examinations shall certify by initials, date, and the time that the examination was made. Certifications and times shall appear at enough locations to show that the entire area has been examined.\n\n(h) Recordkeeping. At the completion of any shift during which a portion of a weekly examination is conducted, a record of the results of each weekly examination, including a record of hazardous conditions and violations of the nine mandatory health or safety standards found during each examination and their locations, the corrective action taken, and the results and location of air and methane measurements, shall be made. The results of methane tests shall be recorded as the percentage of methane measured by the examiner. The record shall be made by the person making the examination or a person designated by the operator. If made by a person other than the examiner, the examiner shall verify the record by initials and date by or at the end of the shift for which the examination was made. The record shall be countersigned by the mine foreman or equivalent mine official by the end of the mine foreman's or equivalent mine official's next regularly scheduled working shift. The records required by this section 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(i) Retention period. 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, as amended at 77 FR 20715, Apr. 6, 2012]","occurrenceCount":2},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.380","heading":"Escapeways; bituminous and lignite mines.","id":"75.380","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.380","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) Except in situations addressed in § 75.381, § 75.385 and § 75.386, at least two separate and distinct travelable passageways shall be designated as escapeways and shall meet the requirements of this section.\n\n(b) (1) Escapeways shall be provided from each working section, and each area where mechanized mining equipment is being installed or removed, continuous to the surface escape drift opening or continuous to the escape shaft or slope facilities to the surface.\n\n(2) During equipment installation, these escapeways shall begin at the projected location for the section loading point. During equipment removal, they shall begin at the location of the last loading point.\n\n(c) The two separate and distinct escapeways required by this section shall not end at a common shaft, slope, or drift opening, except that multiple compartment shafts or slopes separated by walls constructed of noncombustible material may be used as separate and distinct passageways.\n\n(d) Each escapeway shall be—\n\n(1) Maintained in a safe condition to always assure passage of anyone, including disabled persons;\n\n(2) Clearly marked to show the route and direction of travel to the surface;\n\n(3) Maintained to at least a height of 5 feet from the mine floor to the mine roof, excluding the thickness of any roof support, except that the escapeways shall be maintained to at least the height of the coalbed, excluding the thickness of any roof support, where the coalbed is less than 5 feet. In areas of mines where escapeways pass through doors, the height may be less than 5 feet, provided that sufficient height is maintained to enable miners, including disabled persons, to escape quickly in an emergency. In areas of mines developed before November 16, 1992, where escapeways pass over or under overcasts or undercasts, the height may be less than 5 feet provided that sufficient height is maintained to enable miners, including disabled persons, to escape quickly in an emergency. When there is a need to determine whether sufficient height is provided, MSHA may require a stretcher test where 4 persons carry a miner through the area in question on a stretcher;\n\n(4) Maintained at least 6 feet wide except—\n\n(i) Where necessary supplemental roof support is installed, the escapeway shall not be less than 4 feet wide; or\n\n(ii) Where the route of travel passes through doors or other permanent ventilation controls, the escapeway shall be at least 4 feet wide to enable miners to escape quickly in an emergency, or\n\n(iii) Where the alternate escapeway passes through doors or other permanent ventilation controls or where supplemental roof support is required and sufficient width is maintained to enable miners, including disabled persons, to escape quickly in an emergency. When there is a need to determine whether sufficient width is provided, MSHA may require a stretcher test where 4 persons carry a miner through the area in question on a stretcher, or\n\n(iv) Where mobile equipment near working sections, and other equipment essential to the ongoing operation of longwall sections, is necessary during normal mining operations, such as material cars containing rock dust or roof control supplies, or is to be used for the evacuation of miners off the section in the event of an emergency. In any instance, escapeways shall be of sufficient width to enable miners, including disabled persons, to escape quickly in an emergency. When there is a need to determine whether sufficient width is provided, MSHA may require a stretcher test where 4 persons carry a miner through the area in question on a stretcher;\n\n(5) Located to follow the most direct, safe and practical route to the nearest mine opening suitable for the safe evacuation of miners; and\n\n(6) Provided with ladders, stairways, ramps, or similar facilities where the escapeways cross over obstructions.\n\n(7) Provided with a continuous, durable directional lifeline or equivalent device that shall be—\n\n(i) Installed and maintained throughout the entire length of each escapeway as defined in paragraph (b)(1) of this section;\n\n(ii) Flame-resistant in accordance with the requirements of part 18 of this chapter upon replacement of existing lifelines; but in no case later than June 15, 2009;\n\n(iii) Marked with a reflective material every 25 feet;\n\n(iv) Located in such a manner for miners to use effectively to escape;\n\n(v) Equipped with one directional indicator cone securely attached to the lifeline, signifying the route of escape, placed at intervals not exceeding 100 feet. Cones shall be installed so that the tapered section points inby;\n\n(vi) Equipped with one sphere securely attached to the lifeline at each intersection where personnel doors are installed in adjacent crosscuts;\n\n(vii) Equipped with two securely attached cones, installed consecutively with the tapered section pointing inby, to signify an attached branch line is immediately ahead.\n\n(A) A branch line leading from the lifeline to an SCSR cache will be marked with four cones with the base sections in contact to form two diamond shapes. The cones must be placed within reach of the lifeline.\n\n(B) A branch line leading from the lifeline to a refuge alternative will be marked with a rigid spiraled coil at least eight inches in length. The spiraled coil must be placed within reach of the lifeline (see Illustration 1 below).\n\n(e) Surface openings shall be adequately protected to prevent surface fires, fumes, smoke, and flood water from entering the mine.\n\n(f) Primary escapeway. (1) One escapeway that is ventilated with intake air shall be designated as the primary escapeway. The primary escapeway shall have a higher ventilation pressure than the belt entry unless the mine operator submits an alternative in the mine ventilation plan to protect the integrity of the primary escapeway, based on mine specific conditions, which is approved by the district manager.\n\n(2) Paragraphs (f)(3) through (f)(7) of this section apply as follows:\n\n(i) To all areas of a primary escapeway developed on or after November 16, 1992;\n\n(ii) Effective as of June 10, 1997, to all areas of a primary escapeway developed between March 30, 1970 and November 16, 1992; and\n\n(iii) Effective as of June 10, 1997, to all areas of the primary escapeway developed prior to March 30, 1970 where separation of the belt and trolley haulage entries from the primary escapeway existed prior to November 16, 1992.\n\n(3) The following equipment is not permitted in the primary escapeway:\n\n(i) Mobile equipment hauling coal except for hauling coal incidental to cleanup or maintenance of the primary escapeway.\n\n(ii) Compressors, except—\n\n(A) Compressors necessary to maintain the escapeway in safe, travelable condition;\n\n(B) Compressors that are components of equipment such as locomotives and rock dusting machines; and\n\n(C) Compressors of less than five horsepower.\n\n(iii) Underground transformer stations, battery charging stations, substations, and rectifiers except—\n\n(A) Where necessary to maintain the escapeway in safe, travelable condition; and\n\n(B) Battery charging stations and rectifiers and power centers with transformers that are either dry-type or contain nonflammable liquid, provided they are located on or near a working section and are moved as the section advances or retreats.\n\n(iv) Water pumps, except—\n\n(A) Water pumps necessary to maintain the escapeway in safe, travelable condition;\n\n(B) Submersible pumps;\n\n(C) Permissible pumps and associated permissible switchgear;\n\n(D) Pumps located on or near a working section that are moved as the section advances or retreats;\n\n(E) Pumps installed in anthracite mines; and\n\n(F) Small portable pumps.\n\n(4) Mobile equipment operated in the primary escapeway, except for continuous miners and as provided in paragraphs (f)(5), (f)(6), and (f)(7) of this section, shall be equipped with a fire suppression system installed according to §§ 75.1107-3 through 75.1107-16 that is—\n\n(i) Manually operated and attended continuously by a person trained in the systems function and use, or\n\n(ii) A multipurpose dry chemical type capable of both automatic and manual activation.\n\n(5) Personnel carriers and small mobile equipment designed and used only for carrying people and small hand tools may be operated in primary escapeways if—\n\n(i) The equipment is provided with a multipurpose dry chemical type fire suppression system capable of both automatic and manual activation, and the suppression system is suitable for the intended application and is listed or approved by a nationally recognized independent testing laboratory, or,\n\n(ii) Battery powered and provided with two 10 pound multipurpose dry chemical portable fire extinguishers.\n\n(6) Notwithstanding the requirements of paragraph (f)(3)(i), mobile equipment not provided with a fire suppression system may operate in the primary escapeway if no one is inby except those persons directly engaged in using or moving the equipment.\n\n(7) Notwithstanding the requirements of paragraph (f)(3)(i), mobile equipment designated and used only as emergency vehicles or ambulances, may be operated in the primary escapeway without fire suppression systems.\n\n(g) Except where separation of belt and trolley haulage entries from designated escapeways did not exist before November 15, 1992, and except as provided in § 75.350(c), the primary escapeway must be separated from belt and trolley haulage entries for its entire length, to and including the first connecting crosscut outby each loading point except when a greater or lesser distance for this separation is specified and approved in the mine ventilation plan and does not pose a hazard to miners.\n\n(h) Alternate escapeway. One escapeway shall be designated as the alternate escapeway. The alternate escapeway shall be separated from the primary escapeway for its entire length, except that the alternate and primary escapeways may be ventilated from a common intake air shaft or slope opening.\n\n(i) Mechanical escape facilities shall be provided and maintained for—\n\n(1) Each shaft that is part of a designated escapeway and is greater than 50 feet in depth; and\n\n(2) Each slope from the coal seam to the surface that is part of a designated escapeway and is inclined more than 9 degrees from the horizontal.\n\n(j) Within 30 minutes after mine personnel on the surface have been notified of an emergency requiring evacuation, mechanical escape facilities provided under paragraph (i) of this section shall be operational at the bottom of shaft and slope openings that are part of escapeways.\n\n(k) Except where automatically activated hoisting equipment is used, the bottom of each shaft or slope opening that is part of a designated escapeway shall be equipped with a means of signaling a surface location where a person is always on duty when anyone is underground. When the signal is activated or the evacuation of persons underground is necessary, the person shall assure that mechanical escape facilities are operational as required by paragraph (j) of this section.\n\n(l)(1) Stairways or mechanical escape facilities shall be installed in shafts that are part of the designated escapeways and that are 50 feet or less in depth, except ladders may be used in shafts that are part of the designated escapeways and that are 5 feet or less in depth.\n\n(2) Stairways shall be constructed of concrete or metal, set on an angle not to exceed 45 degrees from the horizontal, and equipped on the open side with handrails. In addition, landing platforms that are at least 2 feet by 4 feet shall be installed at intervals not to exceed 20 vertical feet on the stairways and equipped on the open side with handrails.\n\n(3) Ladders shall be constructed of metal, anchored securely, and set on an angle not to exceed 60 degrees from the horizontal.\n\n(m) A travelway designed to prevent slippage shall be provided in slope and drift openings that are part of designated escapeways, unless mechanical escape facilities are installed.\n\n[61 FR 9829, Mar. 11, 1996; 61 FR 20877, May 8, 1996, as amended at 61 FR 55527, Oct. 25, 1996; 69 FR 17530, Apr. 2, 2004; 71 FR 12269, Mar. 9, 2006; 71 FR 71452, Dec. 8, 2006; 73 FR 80613, Dec. 31, 2008]","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},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.1722","heading":"Mechanical equipment guards.","id":"75.1722","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1722","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"R","subpartHeading":"Subpart R—Miscellaneous","text":"(a) Gears; sprockets; chains; drive, head, tail, and takeup pulleys; flywheels; couplings, shafts; sawblades; fan inlets; and similar exposed moving machine parts which may be contacted by persons, and which may cause injury to persons shall be guarded.\n\n(b) Guards at conveyor-drive, conveyor-head, and conveyor-tail pulleys shall extend a distance sufficient to prevent a person from reaching behind the guard and becoming caught between the belt and the pulley.\n\n(c) Except when testing the machinery, guards shall be securely in place while machinery is being operated.\n\n[38 FR 4976, Feb. 23, 1973]","occurrenceCount":1}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"4608811","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}