{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"1517578","name":"Mine #24","status":"Abandoned and Sealed","status_date":"2006-05-30","mine_type":"Underground","coal_metal":"C","commodity":"Coal (Bituminous)","state":"KY","county":"Pike","nearest_town":"Gulnare","operator_id":"P19831","operator_name":"McCoy Elkhorn Coal Corporation","controller_id":"C13562","controller_name":"James River Coal Company","district":"C05","office":"Pikeville KY Field Office","employees":0,"latitude":37.6075,"longitude":-82.537222},"coverage":{"contributingSources":14,"registeredSources":20,"sourceRows":1134},"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":"1517578","name":"Mine #24"},"operator":{"type":"operator","id":"P19831","name":"McCoy Elkhorn Coal Corporation"},"controller":{"type":"controller","id":"C13562","name":"James River Coal Company"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13562","name":"James River Coal Company"},"object":{"type":"mine","id":"1517578","name":"Mine #24"},"validFrom":"1988-09-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517578|C13562|1988-09-28|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23740","name":"Victory Coal Co., Inc"},"object":{"type":"mine","id":"1517578","name":"Mine #24"},"validFrom":"1994-08-01","validTo":"2003-01-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517578|P23740|1994-08-01|2003-01-19"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C14931","name":"Wesley  Childers"},"object":{"type":"mine","id":"1517578","name":"Mine #24"},"validFrom":"1994-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517578|C14931|1994-08-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C14931","name":"Wesley  Childers"},"object":{"type":"operator","id":"P23740","name":"Victory Coal Co., Inc"},"validFrom":"1994-08-01","validTo":"2003-01-19","current":false,"derived":true,"evidenceMineId":"1517578","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517578|P23740|1994-08-01|C14931|1994-08-01|94287"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19831","name":"McCoy Elkhorn Coal Corporation"},"object":{"type":"mine","id":"1517578","name":"Mine #24"},"validFrom":"2003-01-20","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517578|P19831|2003-01-20|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13562","name":"James River Coal Company"},"object":{"type":"operator","id":"P19831","name":"McCoy Elkhorn Coal Corporation"},"validFrom":"2003-01-20","validTo":null,"current":true,"derived":true,"evidenceMineId":"1517578","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517578|P19831|2003-01-20|C13562|1988-09-28|90328"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"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":9,"firstDate":"2002-05-30","lastDate":"2005-05-09","metrics":{"daysLost":279,"injuries":9,"fatalities":0,"recentRows":0,"restrictedDays":89,"contractorRecords":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"186329","DOCUMENT_NO":"220051360032","ACCIDENT_DT":"05/09/2005","DEGREE_INJURY":"DAYS RESTRICTED ACTIVITY ONLY","CLASSIFICATION":"SLIP OR FALL OF PERSON","ACCIDENT_TYPE":"Fall to the walkway or working surface","OCCUPATION":"Continuous miner operator, Coal mole operator","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"EE WAS STEPPING TOWARDS THE CONTINUOUS MINER TO REMOVE A BUCKET OF MINER BITS & STEPPED ON A ROCK, SLIPPED & FELL, CAUSING A LACERATION TO THE RT. KNEE. ACCIDENT OCCURRED IN THE #5 ENTRY OF THE 003-0 MMU.","sourceDate":"2005-05-09"},{"SOURCE_ROW_NUMBER":"65759","DOCUMENT_NO":"220051220080","ACCIDENT_DT":"04/25/2005","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","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","DAYS_LOST":"0","NARRATIVE":"EE was helping hang the miner cable in the #3 entry of the 003-0 mmu. While lifting on the cable he felt pain in his lower back.","sourceDate":"2005-04-25"},{"SOURCE_ROW_NUMBER":"31501","DOCUMENT_NO":"220050380028","ACCIDENT_DT":"01/31/2005","DEGREE_INJURY":"DAYS RESTRICTED ACTIVITY ONLY","CLASSIFICATION":"MACHINERY","ACCIDENT_TYPE":"Caught in, under or between a moving and a stationary object","OCCUPATION":"Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"#6 entry,trammed roof bolter outby #6 intersection to let continuous come across intersection. Was a shuttle car parked in lower end of entry outby the intersection, looking forward to see if he was out of the miners way. had his right hand on outside of roof bolter tram & backed roof bolter into parked shuttle car, mashing his hand between roof bolter frame & shuttle car bumper.","sourceDate":"2005-01-31"},{"SOURCE_ROW_NUMBER":"113046","DOCUMENT_NO":"220043310033","ACCIDENT_DT":"11/23/2004","DEGREE_INJURY":"DAYS RESTRICTED ACTIVITY ONLY","CLASSIFICATION":"HANDTOOLS (NONPOWERED)","ACCIDENT_TYPE":"Struck by... NEC","OCCUPATION":"Laborer, Bull gang,  Parts runner, Roustabout, Roof trimmer/scaler","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"EE WAS HELPING MAKE A BELT MOVE IN THE #5 ENTRY OF THE 003-0 SECTION.  HE WAS LOWERING THE TAILPIECE THAT HAD BEEN RAISED WITH A LIFTING JACK.  HIS HAND SLIPPED OFF THE JACK BAR, RESULTING IN THE JACK BAR STRIKING HIM ON THE RIGHT SIDE OF HIS FACE, CAUSING INJURY TO HIS RIGHT JAW.","sourceDate":"2004-11-23"},{"SOURCE_ROW_NUMBER":"100104","DOCUMENT_NO":"220041400046","ACCIDENT_DT":"05/13/2004","DEGREE_INJURY":"NO DYS AWY FRM WRK,NO RSTR ACT","CLASSIFICATION":"FALL OF FACE/RIB/PILLAR/SIDE/HIGHWALL","ACCIDENT_TYPE":"Struck by... NEC","OCCUPATION":"Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"EE WAS WATCHING THE MINE ROOF FOR THE CONTINUOUS MINER ON PILLAR WORK. A COAL RIB ROLLED OFF, DISLODGING A 9' TIMBER, STRIKING EE ON THE SIDE OF THE HEAD.","sourceDate":"2004-05-13"},{"SOURCE_ROW_NUMBER":"173398","DOCUMENT_NO":"220022140017","ACCIDENT_DT":"07/24/2002","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Absorption of radiations, caustics, toxic and noxious substances","OCCUPATION":"Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)","NO_INJURIES":"1","DAYS_LOST":"1","NARRATIVE":"EE WAS PLASTERING A BRATTICE, WHILE EQUIPMENT WAS DOWN PLASTER SPLASHED BEHIND HIS GLASSES GETTING IN HIS RIGHT EYE. MET WASHED OUT HIS EYE WITH EYE WASH. AND HE RETURNED TO WORK, THAT NIGHT H E WENT TO E.R.","sourceDate":"2002-07-24"},{"SOURCE_ROW_NUMBER":"143311","DOCUMENT_NO":"220022140059","ACCIDENT_DT":"07/17/2002","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Over-exertion in lifting objects","OCCUPATION":"Laborer, Bull gang, Faceman, Parts runner, Roustabout, Roof trimmer/scaler","NO_INJURIES":"1","DAYS_LOST":"5","NARRATIVE":"HE WAS LOADING HIGH LINE ON TO HIGH LINE SLEDE.","sourceDate":"2002-07-17"},{"SOURCE_ROW_NUMBER":"199127","DOCUMENT_NO":"220022140053","ACCIDENT_DT":"07/09/2002","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"MACHINERY","ACCIDENT_TYPE":"Struck by falling object","OCCUPATION":"Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)","NO_INJURIES":"1","DAYS_LOST":"2","NARRATIVE":"EE WAS BOLTING TOP WHEN A SMALL PIECE OF ROCK APP THE SIZE OF A QUARTER FELL FROM THE TOP, HITTING HIM IN BEHIND THE CORNER OF HIS SAFETY GLASSES IN THE CORNER OF HIS LEFT EYE.","sourceDate":"2002-07-09"},{"SOURCE_ROW_NUMBER":"143310","DOCUMENT_NO":"220021610058","ACCIDENT_DT":"05/30/2002","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"POWERED HAULAGE","ACCIDENT_TYPE":"Struck against a moving object","OCCUPATION":"Shuttle car operator, Mantrip operator, Ramcar operator, Rail runner, Buggy operator","NO_INJURIES":"1","DAYS_LOST":"271","NARRATIVE":"EE WAS OPERATING THE LEFT DRIVE SHUTTLE CAR, GOING FROM MINER TO THE FEEDER. HE TURNED THE CAR TOO SHARP WHEN MAKING A TURN, THE CAR TIRE RAN UP ON THE CORNER OF THE RIB, WHEN IT DROPPED BACK OFF, IT JARRED THE CAR, CAUSING HIM TO BOUNCE UP AND STRIKED HIS HEAD ON THE CANOPY OF THE CAR, PUSHING DOWN ON HIS NECK.","sourceDate":"2002-05-30"}]},{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"2006-05-30","lastDate":"2006-05-30","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":267,"firstDate":"2000-06-27","lastDate":"2005-10-18","metrics":{"ss":114,"delinquent":260,"recentRows":0,"paidPenalty":26607,"proposedPenalty":34423,"currentAssessment":34423},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"984711","VIOLATION_NO":"7416739","ISSUE_DT":"10/18/2005","CFR_STANDARD_CD":"75.400","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"268.00","CURRENT_ASSESSMENT_AMT":"268.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2005-10-18"},{"SOURCE_ROW_NUMBER":"984713","VIOLATION_NO":"7425106","ISSUE_DT":"10/12/2005","CFR_STANDARD_CD":"75.202(a)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"268.00","CURRENT_ASSESSMENT_AMT":"268.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2005-10-12"},{"SOURCE_ROW_NUMBER":"984712","VIOLATION_NO":"7425105","ISSUE_DT":"10/12/2005","CFR_STANDARD_CD":"75.220(a)(1)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"324.00","CURRENT_ASSESSMENT_AMT":"324.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2005-10-12"},{"SOURCE_ROW_NUMBER":"984705","VIOLATION_NO":"7416567","ISSUE_DT":"10/12/2005","CFR_STANDARD_CD":"75.334(b)(1)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"60.00","CURRENT_ASSESSMENT_AMT":"60.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2005-10-12"},{"SOURCE_ROW_NUMBER":"984710","VIOLATION_NO":"7416735","ISSUE_DT":"10/11/2005","CFR_STANDARD_CD":"75.1107-4(a)(2)(i)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"60.00","CURRENT_ASSESSMENT_AMT":"60.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2005-10-11"},{"SOURCE_ROW_NUMBER":"984709","VIOLATION_NO":"7416734","ISSUE_DT":"10/11/2005","CFR_STANDARD_CD":"75.523-3(c)(2)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"60.00","CURRENT_ASSESSMENT_AMT":"60.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2005-10-11"},{"SOURCE_ROW_NUMBER":"984708","VIOLATION_NO":"7416733","ISSUE_DT":"10/07/2005","CFR_STANDARD_CD":"75.1107-1(b)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"60.00","CURRENT_ASSESSMENT_AMT":"60.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2005-10-07"},{"SOURCE_ROW_NUMBER":"984707","VIOLATION_NO":"7416732","ISSUE_DT":"10/07/2005","CFR_STANDARD_CD":"75.400","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"286.00","CURRENT_ASSESSMENT_AMT":"286.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2005-10-07"},{"SOURCE_ROW_NUMBER":"984706","VIOLATION_NO":"7416731","ISSUE_DT":"10/07/2005","CFR_STANDARD_CD":"75.523-3(c)(2)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"60.00","CURRENT_ASSESSMENT_AMT":"60.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2005-10-07"},{"SOURCE_ROW_NUMBER":"987318","VIOLATION_NO":"7417216","ISSUE_DT":"09/22/2005","CFR_STANDARD_CD":"77.1605(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"60.00","CURRENT_ASSESSMENT_AMT":"60.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2005-09-22"},{"SOURCE_ROW_NUMBER":"987317","VIOLATION_NO":"7416978","ISSUE_DT":"08/18/2005","CFR_STANDARD_CD":"75.1100-2(e)(2)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"60.00","CURRENT_ASSESSMENT_AMT":"60.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2005-08-18"},{"SOURCE_ROW_NUMBER":"987310","VIOLATION_NO":"7416464","ISSUE_DT":"08/04/2005","CFR_STANDARD_CD":"75.206(b)(1)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"350.00","CURRENT_ASSESSMENT_AMT":"350.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2005-08-04"}]},{"id":"msha-coal-dust-samples","name":"Coal Dust Samples","domains":["health","safety"],"products":["respirable dust trends","CPDM coverage","void patterns","occupation exposure"],"rowCount":317,"firstDate":"2000-01-12","lastDate":"2005-10-03","metrics":{"recentRows":0,"cpdmSamples":0,"voidSamples":15,"validSamples":302,"maxConcentration":10.558,"concentrationTotal":183.327},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"788836","CASS_NUM":"50795082","SMP_TAKEN_DT":"10/3/2005","CONC":".644","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":"2005-10-03"},{"SOURCE_ROW_NUMBER":"284494","CASS_NUM":"50794388","SMP_TAKEN_DT":"10/3/2005","CONC":".554","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":"2005-10-03"},{"SOURCE_ROW_NUMBER":"1113024","CASS_NUM":"57480339","SMP_TAKEN_DT":"9/22/2005","CONC":".288","SMP_TYPE_CD_DESC":"DESIGNATED AREA","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":"2005-09-22"},{"SOURCE_ROW_NUMBER":"1024434","CASS_NUM":"50794921","SMP_TAKEN_DT":"9/10/2005","CONC":"2.877","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":"2005-09-10"},{"SOURCE_ROW_NUMBER":"313673","CASS_NUM":"50794916","SMP_TAKEN_DT":"9/10/2005","CONC":"2.488","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":"2005-09-10"},{"SOURCE_ROW_NUMBER":"1326296","CASS_NUM":"50794912","SMP_TAKEN_DT":"9/9/2005","CONC":"2.021","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":"2005-09-09"},{"SOURCE_ROW_NUMBER":"1022062","CASS_NUM":"50794877","SMP_TAKEN_DT":"9/9/2005","CONC":"2.38","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":"2005-09-09"},{"SOURCE_ROW_NUMBER":"1161869","CASS_NUM":"50794933","SMP_TAKEN_DT":"9/8/2005","CONC":"1.841","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":"2005-09-08"},{"SOURCE_ROW_NUMBER":"1412431","CASS_NUM":"57574984","SMP_TAKEN_DT":"8/8/2005","CONC":".392","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":"2005-08-08"},{"SOURCE_ROW_NUMBER":"1283303","CASS_NUM":"57575025","SMP_TAKEN_DT":"8/8/2005","CONC":".598","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":"2005-08-08"},{"SOURCE_ROW_NUMBER":"743529","CASS_NUM":"57574995","SMP_TAKEN_DT":"8/8/2005","CONC":".201","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":"2005-08-08"},{"SOURCE_ROW_NUMBER":"408335","CASS_NUM":"57574985","SMP_TAKEN_DT":"8/8/2005","CONC":".132","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":"2005-08-08"}]},{"id":"msha-contractor-production-quarterly","name":"Contractor Employment and Production — Quarterly","domains":["contractors","production","safety"],"products":["contractor exposure denominator","productivity","presence windows"],"rowCount":41,"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":15,"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":2,"firstDate":"1994-08-01","lastDate":"2003-01-20","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":1},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":82,"firstDate":"2000-02-23","lastDate":"2006-05-02","metrics":{"inspectors":95,"recentRows":0,"onSiteHours":1489.5,"inspectionHours":2013.5,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"627895","EVENT_NO":"4179237","INSPECTION_BEGIN_DT":"05/02/2006","INSPECTION_END_DT":"06/02/2006","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4.5","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2006-05-02"},{"SOURCE_ROW_NUMBER":"510263","EVENT_NO":"4178436","INSPECTION_BEGIN_DT":"10/03/2005","INSPECTION_END_DT":"12/28/2005","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"3","SUM_TOTAL_INSP_HOURS":"99.5","SUM_TOTAL_ON_SITE_HOURS":"79","sourceDate":"2005-10-03"},{"SOURCE_ROW_NUMBER":"566332","EVENT_NO":"4179214","INSPECTION_BEGIN_DT":"06/30/2005","INSPECTION_END_DT":"09/26/2005","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"3","SUM_TOTAL_INSP_HOURS":"98","SUM_TOTAL_ON_SITE_HOURS":"73","sourceDate":"2005-06-30"},{"SOURCE_ROW_NUMBER":"850060","EVENT_NO":"4179206","INSPECTION_BEGIN_DT":"04/07/2005","INSPECTION_END_DT":"06/21/2005","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"3","SUM_TOTAL_INSP_HOURS":"132.5","SUM_TOTAL_ON_SITE_HOURS":"112","sourceDate":"2005-04-07"},{"SOURCE_ROW_NUMBER":"1119510","EVENT_NO":"4178144","INSPECTION_BEGIN_DT":"02/14/2005","INSPECTION_END_DT":"02/17/2005","ACTIVITY_CODE":"BAB","ACTIVITY":"RESP DUST TECH INSP - U. G. MINES","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"13","SUM_TOTAL_ON_SITE_HOURS":"10","sourceDate":"2005-02-14"},{"SOURCE_ROW_NUMBER":"120389","EVENT_NO":"4178140","INSPECTION_BEGIN_DT":"01/18/2005","INSPECTION_END_DT":"02/01/2005","ACTIVITY_CODE":"BAB","ACTIVITY":"RESP DUST TECH INSP - U. G. MINES","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"12.25","SUM_TOTAL_ON_SITE_HOURS":"10","sourceDate":"2005-01-18"},{"SOURCE_ROW_NUMBER":"1030977","EVENT_NO":"4178133","INSPECTION_BEGIN_DT":"01/03/2005","INSPECTION_END_DT":"03/07/2005","ACTIVITY_CODE":"AAA","ACTIVITY":"Regular Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"64.75","SUM_TOTAL_ON_SITE_HOURS":"54.25","sourceDate":"2005-01-03"},{"SOURCE_ROW_NUMBER":"942762","EVENT_NO":"4178120","INSPECTION_BEGIN_DT":"10/12/2004","INSPECTION_END_DT":"12/22/2004","ACTIVITY_CODE":"AAA","ACTIVITY":"Regular Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"53","SUM_TOTAL_ON_SITE_HOURS":"37.5","sourceDate":"2004-10-12"},{"SOURCE_ROW_NUMBER":"939030","EVENT_NO":"4178121","INSPECTION_BEGIN_DT":"10/12/2004","INSPECTION_END_DT":"11/02/2004","ACTIVITY_CODE":"BAB","ACTIVITY":"RESP DUST TECH INSP - U. G. MINES","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"13.5","SUM_TOTAL_ON_SITE_HOURS":"8.5","sourceDate":"2004-10-12"},{"SOURCE_ROW_NUMBER":"1014537","EVENT_NO":"4186599","INSPECTION_BEGIN_DT":"08/25/2004","INSPECTION_END_DT":"08/26/2004","ACTIVITY_CODE":"BAB","ACTIVITY":"RESP DUST TECH INSP - U. G. MINES","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"1","SUM_TOTAL_ON_SITE_HOURS":"0","sourceDate":"2004-08-25"},{"SOURCE_ROW_NUMBER":"193263","EVENT_NO":"4186598","INSPECTION_BEGIN_DT":"08/23/2004","INSPECTION_END_DT":"08/23/2004","ACTIVITY_CODE":"BBB","ACTIVITY":"NOISE TECHNICAL INVESTIGATION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"10","SUM_TOTAL_ON_SITE_HOURS":"6","sourceDate":"2004-08-23"},{"SOURCE_ROW_NUMBER":"734532","EVENT_NO":"4186595","INSPECTION_BEGIN_DT":"08/05/2004","INSPECTION_END_DT":"08/09/2004","ACTIVITY_CODE":"BAB","ACTIVITY":"RESP DUST TECH INSP - U. G. MINES","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"11","SUM_TOTAL_ON_SITE_HOURS":"7","sourceDate":"2004-08-05"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":71,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2006-Q2":{"hours":0,"employees":0,"production":0},"2006-Q1":{"hours":0,"employees":0,"production":0},"2005-Q4":{"hours":10639,"employees":17,"production":51556},"2005-Q3":{"hours":25691,"employees":43,"production":123339},"2005-Q2":{"hours":29117,"employees":47,"production":130591},"2005-Q1":{"hours":26197,"employees":42,"production":167875},"2004-Q4":{"hours":23253,"employees":39,"production":117073},"2004-Q3":{"hours":21568,"employees":36,"production":149799},"2004-Q2":{"hours":20929,"employees":35,"production":159219},"2004-Q1":{"hours":20897,"employees":34,"production":158424},"2003-Q4":{"hours":5102,"employees":29,"production":34786},"2003-Q3":{"hours":0,"employees":0,"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":12,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2000":{"hours":28794,"employees":21,"production":113022},"2001":{"hours":42124,"employees":23,"production":160668},"2002":{"hours":27678,"employees":18,"production":73995},"2003":{"hours":5102,"employees":29,"production":34786},"2004":{"hours":86647,"employees":36,"production":584515},"2005":{"hours":91644,"employees":37,"production":473361}},"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":27,"firstDate":"2001-10-01","lastDate":"2005-09-22","metrics":{"recentRows":0,"doseOver100":6,"actDoseTotal":1866,"pelDoseTotal":1445},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"60855","EVENT_NO":"4179214","SURVEY_DATE":"09/22/2005","OCCUPATION_CD_DESC":"ROOF BOLTER (TWIN HEAD) (INTAKE SIDE)","MACHINE_CD":"30","MANUFACTURER_CD":"039","ACT_DOSE_85":"57","PEL_DOSE_90":"40","SURVEY_TYPE":"I","sourceDate":"2005-09-22"},{"SOURCE_ROW_NUMBER":"60854","EVENT_NO":"4179214","SURVEY_DATE":"09/22/2005","OCCUPATION_CD_DESC":"ROOF BOLTER (TWIN HEAD) (RETURN SIDE)","MACHINE_CD":"30","MANUFACTURER_CD":"039","ACT_DOSE_85":"37","PEL_DOSE_90":"27","SURVEY_TYPE":"I","sourceDate":"2005-09-22"},{"SOURCE_ROW_NUMBER":"60853","EVENT_NO":"4179214","SURVEY_DATE":"09/22/2005","OCCUPATION_CD_DESC":"SCOOP CAR OPERATOR","MACHINE_CD":"38","MANUFACTURER_CD":"098","ACT_DOSE_85":"74","PEL_DOSE_90":"52","SURVEY_TYPE":"I","sourceDate":"2005-09-22"},{"SOURCE_ROW_NUMBER":"60852","EVENT_NO":"4179214","SURVEY_DATE":"09/22/2005","OCCUPATION_CD_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","MACHINE_CD":"37","MANUFACTURER_CD":"058","ACT_DOSE_85":"36","PEL_DOSE_90":"29","SURVEY_TYPE":"I","sourceDate":"2005-09-22"},{"SOURCE_ROW_NUMBER":"60851","EVENT_NO":"4179214","SURVEY_DATE":"09/22/2005","OCCUPATION_CD_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","MACHINE_CD":"37","MANUFACTURER_CD":"058","ACT_DOSE_85":"68","PEL_DOSE_90":"53","SURVEY_TYPE":"I","sourceDate":"2005-09-22"},{"SOURCE_ROW_NUMBER":"60850","EVENT_NO":"4179214","SURVEY_DATE":"09/22/2005","OCCUPATION_CD_DESC":"CONTINUOUS MINER OPERATOR","MACHINE_CD":"06","MANUFACTURER_CD":"058","ACT_DOSE_85":"114","PEL_DOSE_90":"113","SURVEY_TYPE":"I","sourceDate":"2005-09-22"},{"SOURCE_ROW_NUMBER":"60849","EVENT_NO":"4179214","SURVEY_DATE":"09/22/2005","OCCUPATION_CD_DESC":"CONTINUOUS MINER OPERATOR","MACHINE_CD":"06","MANUFACTURER_CD":"058","ACT_DOSE_85":"69","PEL_DOSE_90":"56","SURVEY_TYPE":"I","sourceDate":"2005-09-22"},{"SOURCE_ROW_NUMBER":"60860","EVENT_NO":"4186598","SURVEY_DATE":"08/23/2004","OCCUPATION_CD_DESC":"MECHANIC","ACT_DOSE_85":"18","PEL_DOSE_90":"4","SURVEY_TYPE":"F","sourceDate":"2004-08-23"},{"SOURCE_ROW_NUMBER":"60859","EVENT_NO":"4186598","SURVEY_DATE":"08/23/2004","OCCUPATION_CD_DESC":"SECTION FOREMAN","ACT_DOSE_85":"31","PEL_DOSE_90":"13","SURVEY_TYPE":"F","sourceDate":"2004-08-23"},{"SOURCE_ROW_NUMBER":"60858","EVENT_NO":"4186598","SURVEY_DATE":"08/23/2004","OCCUPATION_CD_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","MACHINE_CD":"37","MANUFACTURER_CD":"058","ACT_DOSE_85":"25","PEL_DOSE_90":"11","SURVEY_TYPE":"F","sourceDate":"2004-08-23"},{"SOURCE_ROW_NUMBER":"60857","EVENT_NO":"4186598","SURVEY_DATE":"08/23/2004","OCCUPATION_CD_DESC":"SHUTTLE CAR OPERATOR (STANDARD SIDE)","MACHINE_CD":"37","MANUFACTURER_CD":"058","ACT_DOSE_85":"63","PEL_DOSE_90":"42","SURVEY_TYPE":"F","sourceDate":"2004-08-23"},{"SOURCE_ROW_NUMBER":"60856","EVENT_NO":"4186598","SURVEY_DATE":"08/23/2004","OCCUPATION_CD_DESC":"CONTINUOUS MINER OPERATOR","MACHINE_CD":"06","MANUFACTURER_CD":"058","ACT_DOSE_85":"101","PEL_DOSE_90":"86","SURVEY_TYPE":"F","sourceDate":"2004-08-23"}]},{"id":"msha-quartz-samples","name":"Quartz Samples — Coal","domains":["health","safety"],"products":["quartz exposure trends","occupation context","applicable-rule linkage"],"rowCount":22,"firstDate":"2000-07-10","lastDate":"2005-05-03","metrics":{"recentRows":0,"voidSamples":0,"maxQuartzPct":6.3,"validSamples":22,"quartzPctTotal":79.3},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"73489","CASSETTE_NO":"57581898","SAMPLE_DT":"05/03/2005","QUARTZ_PCT":"05.5","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2005-05-03"},{"SOURCE_ROW_NUMBER":"37611","CASSETTE_NO":"57581920","SAMPLE_DT":"05/03/2005","QUARTZ_PCT":"03.7","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2005-05-03"},{"SOURCE_ROW_NUMBER":"27053","CASSETTE_NO":"57581063","SAMPLE_DT":"02/15/2005","QUARTZ_PCT":"06.3","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2005-02-15"},{"SOURCE_ROW_NUMBER":"121047","CASSETTE_NO":"57581526","SAMPLE_DT":"10/27/2004","QUARTZ_PCT":"04.1","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2004-10-27"},{"SOURCE_ROW_NUMBER":"84275","CASSETTE_NO":"57531250","SAMPLE_DT":"08/09/2004","QUARTZ_PCT":"04.2","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2004-08-09"},{"SOURCE_ROW_NUMBER":"133982","CASSETTE_NO":"57531833","SAMPLE_DT":"04/21/2004","QUARTZ_PCT":"04.2","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2004-04-21"},{"SOURCE_ROW_NUMBER":"161837","CASSETTE_NO":"57422629","SAMPLE_DT":"07/29/2002","QUARTZ_PCT":"01.1","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2002-07-29"},{"SOURCE_ROW_NUMBER":"13484","CASSETTE_NO":"57324825","SAMPLE_DT":"10/01/2001","QUARTZ_PCT":"01.3","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2001-10-01"},{"SOURCE_ROW_NUMBER":"141375","CASSETTE_NO":"57346483","SAMPLE_DT":"06/28/2001","QUARTZ_PCT":"01.9","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2001-06-28"},{"SOURCE_ROW_NUMBER":"112742","CASSETTE_NO":"57346504","SAMPLE_DT":"06/28/2001","QUARTZ_PCT":"05.0","OCC_CODE_DESC":"OCCUPATION CODE NOT FOUND","SAMPLE_TYPE_DESC":"DESIGNATED AREA","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2001-06-28"},{"SOURCE_ROW_NUMBER":"101338","CASSETTE_NO":"57335027","SAMPLE_DT":"04/26/2001","QUARTZ_PCT":"00.5","OCC_CODE_DESC":"CONTINUOUS MINER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2001-04-26"},{"SOURCE_ROW_NUMBER":"41153","CASSETTE_NO":"57335035","SAMPLE_DT":"04/26/2001","QUARTZ_PCT":"06.2","OCC_CODE_DESC":"OCCUPATION CODE NOT FOUND","SAMPLE_TYPE_DESC":"DESIGNATED AREA","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2001-04-26"}]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":267,"firstDate":"2000-06-27","lastDate":"2005-10-18","metrics":{"ss":114,"amountDue":34423,"contested":0,"amountPaid":26607,"recentRows":0,"section104d":0,"unterminated":0,"proposedPenalty":34423},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"896441","VIOLATION_NO":"7416739","VIOLATION_ISSUE_DT":"10/18/2005","SIG_SUB":"Y","PART_SECTION":"75.400","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/19/2005","PROPOSED_PENALTY":"268","AMOUNT_DUE":"268","AMOUNT_PAID":"268","CONTESTED_IND":"N","sourceDate":"2005-10-18"},{"SOURCE_ROW_NUMBER":"896443","VIOLATION_NO":"7425106","VIOLATION_ISSUE_DT":"10/12/2005","SIG_SUB":"Y","PART_SECTION":"75.202(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/13/2005","PROPOSED_PENALTY":"268","AMOUNT_DUE":"268","AMOUNT_PAID":"268","CONTESTED_IND":"N","sourceDate":"2005-10-12"},{"SOURCE_ROW_NUMBER":"896442","VIOLATION_NO":"7425105","VIOLATION_ISSUE_DT":"10/12/2005","SIG_SUB":"Y","PART_SECTION":"75.220(a)(1)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"3","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/13/2005","PROPOSED_PENALTY":"324","AMOUNT_DUE":"324","AMOUNT_PAID":"324","CONTESTED_IND":"N","sourceDate":"2005-10-12"},{"SOURCE_ROW_NUMBER":"896435","VIOLATION_NO":"7416567","VIOLATION_ISSUE_DT":"10/12/2005","SIG_SUB":"N","PART_SECTION":"75.334(b)(1)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/12/2005","PROPOSED_PENALTY":"60","AMOUNT_DUE":"60","AMOUNT_PAID":"60","CONTESTED_IND":"N","sourceDate":"2005-10-12"},{"SOURCE_ROW_NUMBER":"896440","VIOLATION_NO":"7416735","VIOLATION_ISSUE_DT":"10/11/2005","SIG_SUB":"N","PART_SECTION":"75.1107-4(a)(2)(i)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/13/2005","PROPOSED_PENALTY":"60","AMOUNT_DUE":"60","AMOUNT_PAID":"60","CONTESTED_IND":"N","sourceDate":"2005-10-11"},{"SOURCE_ROW_NUMBER":"896439","VIOLATION_NO":"7416734","VIOLATION_ISSUE_DT":"10/11/2005","SIG_SUB":"N","PART_SECTION":"75.523-3(c)(2)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/13/2005","PROPOSED_PENALTY":"60","AMOUNT_DUE":"60","AMOUNT_PAID":"60","CONTESTED_IND":"N","sourceDate":"2005-10-11"},{"SOURCE_ROW_NUMBER":"896438","VIOLATION_NO":"7416733","VIOLATION_ISSUE_DT":"10/07/2005","SIG_SUB":"N","PART_SECTION":"75.1107-1(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/11/2005","PROPOSED_PENALTY":"60","AMOUNT_DUE":"60","AMOUNT_PAID":"60","CONTESTED_IND":"N","sourceDate":"2005-10-07"},{"SOURCE_ROW_NUMBER":"896437","VIOLATION_NO":"7416732","VIOLATION_ISSUE_DT":"10/07/2005","SIG_SUB":"Y","PART_SECTION":"75.400","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"2","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/11/2005","PROPOSED_PENALTY":"286","AMOUNT_DUE":"286","AMOUNT_PAID":"286","CONTESTED_IND":"N","sourceDate":"2005-10-07"},{"SOURCE_ROW_NUMBER":"896436","VIOLATION_NO":"7416731","VIOLATION_ISSUE_DT":"10/07/2005","SIG_SUB":"N","PART_SECTION":"75.523-3(c)(2)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/11/2005","PROPOSED_PENALTY":"60","AMOUNT_DUE":"60","AMOUNT_PAID":"60","CONTESTED_IND":"N","sourceDate":"2005-10-07"},{"SOURCE_ROW_NUMBER":"896370","VIOLATION_NO":"7417216","VIOLATION_ISSUE_DT":"09/22/2005","SIG_SUB":"N","PART_SECTION":"77.1605(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"09/22/2005","PROPOSED_PENALTY":"60","AMOUNT_DUE":"60","AMOUNT_PAID":"60","CONTESTED_IND":"N","sourceDate":"2005-09-22"},{"SOURCE_ROW_NUMBER":"896369","VIOLATION_NO":"7416978","VIOLATION_ISSUE_DT":"08/18/2005","SIG_SUB":"N","PART_SECTION":"75.1100-2(e)(2)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"08/18/2005","PROPOSED_PENALTY":"60","AMOUNT_DUE":"60","AMOUNT_PAID":"60","CONTESTED_IND":"N","sourceDate":"2005-08-18"},{"SOURCE_ROW_NUMBER":"896362","VIOLATION_NO":"7416464","VIOLATION_ISSUE_DT":"08/04/2005","SIG_SUB":"Y","PART_SECTION":"75.206(b)(1)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Permanent","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"08/04/2005","PROPOSED_PENALTY":"350","AMOUNT_DUE":"350","AMOUNT_PAID":"350","CONTESTED_IND":"N","sourceDate":"2005-08-04"}]}],"safety":{"href":"/api/v1/mines/1517578/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/1517578/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 75.400","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":2},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.202","heading":"Protection from falls of roof, face and ribs.","id":"75.202","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-C/section-75.202","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"C","subpartHeading":"Subpart C—Roof Support","text":"(a) The roof, face and ribs of areas where persons work or travel shall be supported or otherwise controlled to protect persons from hazards related to falls of the roof, face or ribs and coal or rock bursts.\n\n(b) No person shall work or travel under unsupported roof unless in accordance with this subpart.","occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.220","heading":"Roof control plan.","id":"75.220","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-C/section-75.220","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"C","subpartHeading":"Subpart C—Roof Support","text":"(a)(1) Each mine operator shall develop and follow a roof control plan, approved by the District Manager, that is suitable to the prevailing geological conditions, and the mining system to be used at the mine. Additional measures shall be taken to protect persons if unusual hazards are encountered.\n\n(2) The proposed roof control plan and any revisions to the plan shall be submitted, in writing, to the District Manager. When revisions to a roof control plan are proposed, only the revised pages need to be submitted unless otherwise specified by the District Manager.\n\n(b)(1) The mine operator will be notified in writing of the approval or denial of approval of a proposed roof control plan or proposed revision.\n\n(2) When approval of a proposed plan or revision is denied, the deficiencies of the plan or revision and recommended changes will be specified and the mine operator will be afforded an opportunity to discuss the deficiencies and changes with the District Manager.\n\n(3) Before new support materials, devices or systems other than roof bolts and accessories, are used as the only means of roof support, the District Manager may require that their effectiveness be demonstrated by experimental installations.\n\n(c) No proposed roof control plan or revision to a roof control plan shall be implemented before it is approved.\n\n(d) Before implementing an approved revision to a roof control plan, all persons who are affected by the revision shall be instructed in its provisions.\n\n(e) The approved roof control plan and any revisions shall be available to the miners and representative of miners at the mine.\n\n[53 FR 2375, Jan. 27, 1988; 53 FR 11395, Apr. 6, 1988, as amended at 60 FR 33723, June 29, 1995; 71 FR 16668, Apr. 3, 2006]","occurrenceCount":1},{"chapter":"I","heading":"Worked-out areas and areas where pillars are being recovered.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.334","part":"75","subchapter":"O","subpart":"D","id":"75.334","citation":"30 CFR 75.334","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 75.1107-4","heading":"Automatic fire sensors and manual actuators; installation; minimum requirements.","id":"75.1107-4","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-L/section-75.1107-4","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"L","subpartHeading":"Subpart L—Fire Protection","text":"(a)(1) Where fire suppression devices are installed on unattended underground equipment, one or more point-type sensors or equivalent shall be installed for each 50 square feet of top surface area, or fraction thereof, of such equipment, and each sensor shall be designed to activate the first suppression system and disconnect the electrical power source to the equipment protected, and, except where sprinklers are used, there shall be in addition, a manual actuator installed to operate the system. Where sprinklers are used, provision shall be made for manual application of water to the protected equipment in lieu of a manual actuator.\n\n(2) Two or more manual actuators, where practicable, shall be installed, as provided in paragraphs (a)(2) (i) and (ii) of this section, to activate fire suppression devices on attended equipment purchased on or after the effective date of this § 75.1107-4. At least one manual actuator shall be used on equipment purchased prior to the effective date of this § 75.1107-4.\n\n(i) Manual actuators installed on attended equipment regularly operated by a miner, as provided in § 75.1107-1(c)(1) shall be located at different locations on the equipment, and at least one manual actuator shall be located within easy reach of the operator's normal operating position.\n\n(ii) Manual actuators to activate fire suppression devices on attended equipment not regularly operated by a miner, as provided in § 75.1107-1(c)(2), shall be installed at different location, and at least one manual actuator shall be installed so as to be easily reached by the miner at the jobsite or by persons approaching the equipment.\n\n(b) Sensors shall, where practicable, be installed in accordance with the recommendations set forth in National Fire Code No. 72A “Local Protective Signaling Systems” (NFPA No. 72A-1967).\n\n(c) On unattended equipment the fire suppression device shall operate independently of the power to the main motor (or equivalent) so it will remain operative if the circuit breakers (or other protective device) actuates. On attended equipment powered through a trailing cable the fire suppression device shall operate independently of the electrical power provided by the cable.\n\n(d) Point-type sensors (such as thermocouple, bimetallic strip, or rate of temperature rise) located in ventilated passageways shall be installed downwind from the equipment to be protected.\n\n(e) Sensor systems shall include a device or method for determining their operative condition.\n\n[37 FR 15301, July 29, 1972]","occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.523-3","heading":"Automatic emergency-parking brakes.","id":"75.523-3","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.523-3","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"F","subpartHeading":"Subpart F—Electrical Equipment—General","text":"(a) Except for personnel carriers, rubber-tired, self-propelled electric haulage equipment used in the active workings of underground coal mines shall be equipped with automatic emergency-parking brakes in accordance with the following schedule.\n\n(1) On and after May 23, 1989—\n\n(i) All new equipment ordered; and\n\n(ii) All equipment originally furnished with or retrofitted with automatic emergency-parking brakes which meet the requirements of this section.\n\n(2) On and after May 23, 1991, all other equipment.\n\n(b) Automatic emergency-parking brakes shall—\n\n(1) Be activated immediately by the emergency deenergization device required by 30 CFR 75.523-1 and 75.523-2;\n\n(2) Engage automatically within 5.0 seconds when the equipment is deenergized;\n\n(3) Safely bring the equipment when fully loaded to a complete stop on the maximum grade on which it is operated;\n\n(4) Hold the equipment stationary despite any contraction of brake parts, exhaustion of any non-mechanical source of energy, or leakage; and\n\n(5) Release only by a manual control that does not operate any other equipment function.\n\n(c) Automatic emergency-parking brakes shall include a means in the equipment operator's compartment to—\n\n(1) Apply the brakes manually without deenergizing the equipment; and\n\n(2) Release and reengage the brakes without energizing the equipment.\n\n(d) On and after November 24, 1989, rubber-tired, self-propelled electric face equipment not covered by paragraph (a) of this section shall be equipped with a means incorporated on the equipment and operable from each tramming station to hold the equipment stationary—\n\n(1) On the maximum grade on which it is operated; and\n\n(2) Despite any contraction of components, exhaustion of any non-mechanical source of energy, or leakage.\n\n(e) The brake systems required by paragraphs (a) or (d) of this section shall be applied when the equipment operator is not at the controls of the equipment, except during movement of disabled equipment.\n\n[54 FR 12412, Mar. 24, 1989]","occurrenceCount":2},{"chapter":"I","heading":"Fire-resistant hydraulic fluids and fire suppression devices on underground equipment.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-L/section-75.1107-1","part":"75","subchapter":"O","subpart":"L","id":"75.1107-1","citation":"30 CFR 75.1107-1","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 77.1605","heading":"Loading and haulage equipment; installations.","id":"77.1605","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1605","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":"Q","subpartHeading":"Subpart Q—Loading and Haulage","text":"(a) Cab windows shall be of safety glass or equivalent, in good condition and shall be kept clean.\n\n(b) Mobile equipment shall be equipped with adequate brakes, and all trucks and front-end loaders shall also be equipped with parking brakes.\n\n(c) Positive-action type brakes shall be provided on aerial tramways.\n\n(d) Mobile equipment shall be provided with audible warning devices. Lights shall be provided on both ends when required.\n\n(e) Guard nets or other suitable protection shall be provided where tramways pass over roadways, walkways, or buildings.\n\n(f) Guards shall be installed to prevent swaying buckets from hitting towers.\n\n(g) Aerial tramway cable connections shall be designed to offer minimum obstruction to the passage of wheels.\n\n(h) Rocker-bottom or bottom-dump cars shall be equipped with positive locking devices, or other suitable devices.\n\n(i) Ramps and dumps shall be of solid construction, of ample width, have ample clearance and headroom, and be kept reasonably free of spillage.\n\n(j) Chute-loading installations shall be designed so that the men pulling chutes are not required to be in a hazardous position during loading operations.\n\n(k) Berms or guards shall be provided on the outer bank of elevated roadways.\n\n(l) Berms, bumper blocks, safety hooks, or similar means shall be provided to prevent overtravel and overturning at dumping locations.\n\n(m) Roadbeds, rails, joints, switches, frogs, and other elements on railroads shall be designed, installed, and maintained in a safe manner consistent with the speed and type of haulage.\n\n(n) Where practicable, a minimum of 30 inches continuous clearance from the farthest projection of moving railroad equipment shall be provided on at least one side of the tracks; all places where it is not possible to provide 30-inch clearance shall be marked conspicuously.\n\n(o) Track guardrails, lead rails, and frogs shall be protected or blocked so as to prevent a person's foot from becoming wedged.\n\n(p) Positive-acting stop-blocks, derail devices, track skates, or other adequate means shall be installed wherever necessary to protect persons from runaway or moving railroad equipment.\n\n(q) Switch throws shall be installed so as to provide adequate clearance for switchmen.\n\n(r) Where necessary, bumper blocks or the equivalent shall be provided at all track dead ends.","occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.1100-2","heading":"Quantity and location of firefighting equipment.","id":"75.1100-2","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-L/section-75.1100-2","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"L","subpartHeading":"Subpart L—Fire Protection","text":"(a) Working sections. (1) Each working section of coal mines producing 300 tons or more per shift shall be provided with two portable fire extinguishers and 240 pounds of rock dust in bags or other suitable containers; waterlines shall extend to each section loading point and be equipped with enough fire hose to reach each working face unless the section loading point is provided with one of the following:\n\n(i) Two portable water cars; or\n\n(ii) Two portable chemical cars; or\n\n(iii) One portable water car or one portable chemical car, and either (a) a portable foam-generating machine or (b) a portable high-pressure rock-dusting machine fitted with at least 250 feet of hose and supplied with at least 60 sacks of rock dust.\n\n(2) Each working section of coal mines producing less than 300 tons of coal per shift shall be provided with the following:\n\n(i) Two portable fire extinguishers; and\n\n(ii) 240 pounds of rock dust in bags or other suitable containers; and\n\n(iii) At least 500 gallons of water and at least three pails of 10-quart capacity; or a waterline with sufficient hose to reach the working places; or a portable water car of at least 500-gallons capacity; or a portable, all-purpose, dry-powder chemical car of at least 125-pounds capacity.\n\n(3) As an alternative to paragraph (a)(2) of this section, each working section with no electrical equipment at the face of an anthracite coal mine producing less than 300 tons of coal per shift shall be provided with the following:\n\n(i) Portable fire extinguishers containing a total capacity of at least 30 pounds of dry chemical or 15 gallons of foam and located at the entrance to the gangway at the bottom of the slope; and\n\n(ii) Portable fire extinguishers containing a total capacity of at least 20 pounds of dry chemical or 10 gallons of foam and located within 500 feet from the working face.\n\n(b) Belt conveyors. In all coal mines, waterlines shall be installed parallel to the entire length of belt conveyors and shall be equipped with firehose outlets with valves at 300-foot intervals along each belt conveyor and at tailpieces. At least 500 feet of firehose with fittings suitable for connection with each belt conveyor waterline system shall be stored at strategic locations along the belt conveyor. Waterlines may be installed in entries adjacent to the conveyor entry belt as long as the outlets project into the belt conveyor entry.\n\n(c) Haulage tracks. (1) In mines producing 300 tons of coal or more per shift waterlines shall be installed parallel to all haulage tracks using mechanized equipment in the track or adjacent entry and shall extend to the loading point of each working section. Waterlines shall be equipped with outlet valves at intervals of not more than 500 feet, and 500 feet of firehose with fittings suitable for connection with such waterlines shall be provided at strategic locations. Two portable water cars, readily available, may be used in lieu of waterlines prescribed under this paragraph.\n\n(2) In mines producing less than 300 tons of coal per shift, there shall be provided at 500-foot intervals in all main and secondary haulage roads:\n\n(i) A tank of water of at least 55-gallon capacity with at least 3 pails of not less than 10-quart capacity; or\n\n(ii) Not less than 240 pounds of bagged rock dust.\n\n(d) Transportation. Each track or off-track locomotive, self-propelled man-trip car, or personnel carrier shall be equipped with one portable fire extinguisher.\n\n(e) Electrical installations. At each electrical installation, the operator shall provide two portable fire extinguishers that have a nominal capacity of 5 pounds of dry chemical, or one extinguisher that has a nominal capacity of at least 10 pounds of dry chemical, and which have a 2-A:10-B:C or higher rating.\n\n(f) Oil storage stations. Two portable fire extinguishers and 240 pounds of rock dust, shall be provided at each permanent underground oil storage station. One portable fire extinguisher shall be provided at each working section where 25 gallons or more of oil are stored in addition to extinguishers required under paragraph (a) of this section.\n\n(g) Welding, cutting, soldering. One portable fire extinguisher or 240 pounds of rock dust shall be provided at locations where welding, cutting, or soldering with arc or flame is being done.\n\n(h) Powerlines. At each wooden door through which powerlines pass there shall be one portable fire extinguisher or 240 pounds of rock dust within 25 feet of the door on the intake air side.\n\n(i) Emergency materials. (1) At each mine producing 300 tons of coal or more per shift there shall be readily available the following materials at locations not exceeding 2 miles from each working section:\n\n1,000 board feet of brattice boards 2 rolls of brattice cloth 2 hand saws 25 pounds of 8 d nails 25 pounds of 10 d nails 25 pounds of 16 d nails 3 claw hammers 25 bags of wood fiber plaster or 10 bags of cement (or equivalent material for stoppings) 5 tons of rock dust\n\n(2) At each mine producing less than 300 tons of coal per shift the above materials shall be available at the mine, provided, however, that the emergency materials for one or more mines may be stored at a central warehouse or building supply company and such supply must be the equivalent of that required for all mines involved and within 1-hour's delivery time from each mine. This exception shall not apply where the active working sections are more than 2 miles from the surface.\n\n[35 FR 17890, Nov. 20, 1970, as amended at 73 FR 53127, Sept. 15, 2008]","occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.206","heading":"Conventional roof support.","id":"75.206","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-C/section-75.206","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"C","subpartHeading":"Subpart C—Roof Support","text":"(a) Except in anthracite mines using non-mechanized mining systems, when conventional roof support materials are used as the only means of support—\n\n(1) The width of any opening shall not exceed 20 feet;\n\n(2) The spacing of roadway roof support shall not exceed 5 feet;\n\n(3)(i) Supports shall be installed to within 5 feet of the uncut face;\n\n(ii) When supports nearest the face must be removed to facilitate the operation of face equipment, equivalent temporary support shall be installed prior to removing the supports;\n\n(4) Straight roadways shall not exceed 16 feet wide where full overhead support is used and 14 feet wide where only posts are used;\n\n(5) Curved roadways shall not exceed 16 feet wide; and\n\n(6) The roof at the entrance of all openings along travelways which are no longer needed for storing supplies or for travel of equipment shall be supported by extending the line of support across the opening.\n\n(b) Conventional roof support materials shall meet the following specifications:\n\n(1) The minimum diameter of cross-sectional area of wooden posts shall be as follows:\n\nPost length (in inches) Diameter of round posts (in inches) Cross-sectional area of split posts (in square inches) 60 or less 4 13 Over 60 to 84 5 20 Over 84 to 108 6 28 Over 108 to 132 7 39 Over 132 to 156 8 50 Over 156 to 180 9 64 Over 180 to 204 10 79 Over 204 to 228 11 95 Over 228 12 113\n\n(2) Wooden materials used for support shall have the following dimensions:\n\n(i) Cap blocks and footings shall have flat sides and be at least 2 inches thick, 4 inches wide and 12 inches long.\n\n(ii) Crossbars shall have a minimum cross-sectional area of 24 square inches and be at least 3 inches thick.\n\n(iii) Planks shall be at least 6 inches wide and 1 inch thick.\n\n(3) Cribbing materials shall have at least two parallel flat sides.\n\n(c) A cluster of two or more posts that provide equivalent strength may be used to meet the requirements of paragraph (b)(1) of this section, except that no post shall have a diameter less than 4 inches or have a cross-sectional area less than 13 square inches.\n\n(d) Materials other than wood used for support shall have support strength at least equivalent to wooden material meeting the applicable provisions of this section.\n\n(e) Posts and jacks shall be tightly installed on solid footing.\n\n(f) When posts are installed under roof susceptible to sloughing a cap block, plank, crossbar or materials that are equally effective shall be placed between the post and the roof.\n\n(g) Blocks used for lagging between the roof and crossbars shall be spaced to distribute the load.\n\n(h) Jacks used for roof support shall be used with at least 36 square inches of roof bearing surface.\n\n[53 FR 2375, Jan. 27, 1988, as amended at 55 FR 14228, Apr. 16, 1990; 55 FR 20137, May 15, 1990]","occurrenceCount":1}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"1517578","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}