{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"1517767","name":"#2","status":"Abandoned and Sealed","status_date":"2001-05-16","mine_type":"Underground","coal_metal":"C","commodity":"Coal (Bituminous)","state":"KY","county":"Floyd","nearest_town":"Ivel","operator_id":"P22855","operator_name":"Murriell-Don Coal Company Inc","controller_id":"0041649","controller_name":"Rowland  Goble; Charles A  Ratliff","district":"C07","office":"Hazard KY Field Office","employees":0,"latitude":37.6039,"longitude":-82.6544},"coverage":{"contributingSources":12,"registeredSources":20,"sourceRows":155},"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":"1517767","name":"#2"},"operator":{"type":"operator","id":"P22855","name":"Murriell-Don Coal Company Inc"},"controller":{"type":"controller","id":"0041649","name":"Rowland  Goble; Charles A  Ratliff"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C06314","name":"Richard L  Cooper"},"object":{"type":"mine","id":"1517767","name":"#2"},"validFrom":"1987-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517767|C06314|1987-07-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15108","name":"Murriell James Ray"},"object":{"type":"mine","id":"1517767","name":"#2"},"validFrom":"1994-05-09","validTo":"2003-01-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517767|C15108|1994-05-09|2003-01-16"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P18831","name":"Richardson Fuel Inc"},"object":{"type":"mine","id":"1517767","name":"#2"},"validFrom":"1996-04-01","validTo":"1996-04-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517767|P18831|1996-04-01|1996-04-25"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C06314","name":"Richard L  Cooper"},"object":{"type":"operator","id":"P18831","name":"Richardson Fuel Inc"},"validFrom":"1996-04-01","validTo":"1996-04-25","current":false,"derived":true,"evidenceMineId":"1517767","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517767|P18831|1996-04-01|C06314|1987-07-01|71466"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23467","name":"Bethel Energy Corp"},"object":{"type":"mine","id":"1517767","name":"#2"},"validFrom":"1996-04-26","validTo":"1998-01-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517767|P23467|1996-04-26|1998-01-26"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15428","name":"Richard  Goff"},"object":{"type":"mine","id":"1517767","name":"#2"},"validFrom":"1996-04-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517767|C15428|1996-04-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15428","name":"Richard  Goff"},"object":{"type":"operator","id":"P23467","name":"Bethel Energy Corp"},"validFrom":"1996-04-26","validTo":"1998-01-26","current":false,"derived":true,"evidenceMineId":"1517767","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517767|P23467|1996-04-26|C15428|1996-04-26|95570"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P22855","name":"Murriell-Don Coal Company Inc"},"object":{"type":"mine","id":"1517767","name":"#2"},"validFrom":"1998-01-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517767|P22855|1998-01-27|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15108","name":"Murriell James Ray"},"object":{"type":"operator","id":"P22855","name":"Murriell-Don Coal Company Inc"},"validFrom":"1998-01-27","validTo":"2003-01-16","current":false,"derived":true,"evidenceMineId":"1517767","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517767|P22855|1998-01-27|C15108|1994-05-09|94774"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0041649","name":"Charles A  Ratliff et al"},"object":{"type":"mine","id":"1517767","name":"#2"},"validFrom":"2003-01-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517767|0041649|2003-01-17|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0041649","name":"Charles A  Ratliff et al"},"object":{"type":"operator","id":"P22855","name":"Murriell-Don Coal Company Inc"},"validFrom":"2003-01-17","validTo":null,"current":true,"derived":true,"evidenceMineId":"1517767","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517767|P22855|1998-01-27|0041649|2003-01-17|2849"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0041649","name":"Rowland  Goble  et al"},"object":{"type":"operator","id":"P22855","name":"Murriell-Don Coal Company Inc"},"validFrom":"2003-01-17","validTo":null,"current":true,"derived":true,"evidenceMineId":"1517767","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517767|P22855|1998-01-27|0041649|2003-01-17|2850"}}],"coverage":{"historyRecords":5,"edgeCount":12,"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":2,"firstDate":"2000-03-16","lastDate":"2000-06-08","metrics":{"daysLost":82,"injuries":2,"fatalities":0,"recentRows":0,"restrictedDays":0,"contractorRecords":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"246630","DOCUMENT_NO":"220001680018","ACCIDENT_DT":"06/08/2000","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":"42","NARRATIVE":"REMOVING ROCK FROM DRAG CHAIN, EMPLOYEE HURT LOWER PART OF BACK.","sourceDate":"2000-06-08"},{"SOURCE_ROW_NUMBER":"52992","DOCUMENT_NO":"220000890011","ACCIDENT_DT":"03/16/2000","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":"40","NARRATIVE":"DRAW ROCK FELL OUT IN BETWEEN BOLTS HITTING PERSON ON RIGHT SHOULDER.","sourceDate":"2000-03-16"}]},{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"2001-05-16","lastDate":"2001-05-16","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":24,"firstDate":"2000-01-10","lastDate":"2000-12-12","metrics":{"ss":13,"delinquent":24,"recentRows":0,"paidPenalty":2897,"proposedPenalty":2963,"currentAssessment":2963},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"949694","VIOLATION_NO":"4505377","ISSUE_DT":"12/12/2000","CFR_STANDARD_CD":"75.1711-3","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"161.00","CURRENT_ASSESSMENT_AMT":"161.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2000-12-12"},{"SOURCE_ROW_NUMBER":"949662","VIOLATION_NO":"7364101","ISSUE_DT":"08/02/2000","CFR_STANDARD_CD":"72.630(b)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"259.00","CURRENT_ASSESSMENT_AMT":"259.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2000-08-02"},{"SOURCE_ROW_NUMBER":"1634061","VIOLATION_NO":"7364136","ISSUE_DT":"07/24/2000","CFR_STANDARD_CD":"75.342(a)(4)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"55.00","CURRENT_ASSESSMENT_AMT":"55.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2000-07-24"},{"SOURCE_ROW_NUMBER":"1634060","VIOLATION_NO":"7364135","ISSUE_DT":"07/19/2000","CFR_STANDARD_CD":"75.370(a)(1)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"259.00","CURRENT_ASSESSMENT_AMT":"259.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2000-07-19"},{"SOURCE_ROW_NUMBER":"1634059","VIOLATION_NO":"7364134","ISSUE_DT":"07/19/2000","CFR_STANDARD_CD":"77.400(a)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"140.00","CURRENT_ASSESSMENT_AMT":"140.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2000-07-19"},{"SOURCE_ROW_NUMBER":"1634058","VIOLATION_NO":"7364133","ISSUE_DT":"07/19/2000","CFR_STANDARD_CD":"77.215(g)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"259.00","CURRENT_ASSESSMENT_AMT":"259.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2000-07-19"},{"SOURCE_ROW_NUMBER":"1612083","VIOLATION_NO":"7364771","ISSUE_DT":"06/27/2000","CFR_STANDARD_CD":"75.604(b)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"161.00","CURRENT_ASSESSMENT_AMT":"161.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2000-06-27"},{"SOURCE_ROW_NUMBER":"1612082","VIOLATION_NO":"7349672","ISSUE_DT":"06/20/2000","CFR_STANDARD_CD":"77.1605(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"55.00","CURRENT_ASSESSMENT_AMT":"55.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2000-06-20"},{"SOURCE_ROW_NUMBER":"1615449","VIOLATION_NO":"7364047","ISSUE_DT":"03/27/2000","CFR_STANDARD_CD":"75.403","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"294.00","CURRENT_ASSESSMENT_AMT":"294.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2000-03-27"},{"SOURCE_ROW_NUMBER":"1589433","VIOLATION_NO":"7369084","ISSUE_DT":"03/21/2000","CFR_STANDARD_CD":"77.1601","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"66.00","CURRENT_ASSESSMENT_AMT":"66.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2000-03-21"},{"SOURCE_ROW_NUMBER":"1589432","VIOLATION_NO":"7369083","ISSUE_DT":"03/21/2000","CFR_STANDARD_CD":"77.215-2(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"55.00","CURRENT_ASSESSMENT_AMT":"55.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2000-03-21"},{"SOURCE_ROW_NUMBER":"1615448","VIOLATION_NO":"7364046","ISSUE_DT":"03/02/2000","CFR_STANDARD_CD":"77.215(g)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"55.00","CURRENT_ASSESSMENT_AMT":"55.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2000-03-02"}]},{"id":"msha-coal-dust-samples","name":"Coal Dust Samples","domains":["health","safety"],"products":["respirable dust trends","CPDM coverage","void patterns","occupation exposure"],"rowCount":54,"firstDate":"2000-01-13","lastDate":"2000-09-26","metrics":{"recentRows":0,"cpdmSamples":0,"voidSamples":5,"validSamples":49,"maxConcentration":1.474,"concentrationTotal":25.744},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1240917","CASS_NUM":"50540946","SMP_TAKEN_DT":"9/26/2000","CONC":".922","SMP_TYPE_CD_DESC":"DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"NOT YET USED IN DETERMINATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"CUTTING MACHINE OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2000-09-26"},{"SOURCE_ROW_NUMBER":"1655362","CASS_NUM":"50540930","SMP_TAKEN_DT":"9/25/2000","CONC":"1.023","SMP_TYPE_CD_DESC":"DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"NOT YET USED IN DETERMINATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"CUTTING MACHINE OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2000-09-25"},{"SOURCE_ROW_NUMBER":"1394564","CASS_NUM":"50540940","SMP_TAKEN_DT":"8/15/2000","CONC":".162","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":"2000-08-15"},{"SOURCE_ROW_NUMBER":"1116754","CASS_NUM":"50540914","SMP_TAKEN_DT":"8/14/2000","CONC":".452","SMP_TYPE_CD_DESC":"DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"VOID SAMPLE","VOID_CD_DESC":"EXCESS SAMPLE","OCC_CD_DESC":"CUTTING MACHINE OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2000-08-14"},{"SOURCE_ROW_NUMBER":"1070717","CASS_NUM":"50540973","SMP_TAKEN_DT":"8/11/2000","CONC":".839","SMP_TYPE_CD_DESC":"DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"BIMONTHLY CYCLE/TRANSITION PERIOD SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"CUTTING MACHINE OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2000-08-11"},{"SOURCE_ROW_NUMBER":"605172","CASS_NUM":"50540909","SMP_TAKEN_DT":"8/10/2000","CONC":".823","SMP_TYPE_CD_DESC":"DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"BIMONTHLY CYCLE/TRANSITION PERIOD SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"CUTTING MACHINE OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2000-08-10"},{"SOURCE_ROW_NUMBER":"1381215","CASS_NUM":"50540974","SMP_TAKEN_DT":"8/9/2000","CONC":".662","SMP_TYPE_CD_DESC":"DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"BIMONTHLY CYCLE/TRANSITION PERIOD SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"CUTTING MACHINE OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2000-08-09"},{"SOURCE_ROW_NUMBER":"750071","CASS_NUM":"50540949","SMP_TAKEN_DT":"8/8/2000","CONC":"1.474","SMP_TYPE_CD_DESC":"DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"BIMONTHLY CYCLE/TRANSITION PERIOD SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"CUTTING MACHINE OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2000-08-08"},{"SOURCE_ROW_NUMBER":"1494","CASS_NUM":"50540895","SMP_TAKEN_DT":"8/7/2000","CONC":".725","SMP_TYPE_CD_DESC":"DESIGNATED OCCUPATION","SMP_USE_CD_DESC":"BIMONTHLY CYCLE/TRANSITION PERIOD SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"CUTTING MACHINE OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2000-08-07"},{"SOURCE_ROW_NUMBER":"1191506","CASS_NUM":"57284063","SMP_TAKEN_DT":"8/2/2000","CONC":".377","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":"2000-08-02"},{"SOURCE_ROW_NUMBER":"977160","CASS_NUM":"57284065","SMP_TAKEN_DT":"8/2/2000","CONC":".15","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":"COAL DRILL OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2000-08-02"},{"SOURCE_ROW_NUMBER":"621908","CASS_NUM":"57284144","SMP_TAKEN_DT":"8/2/2000","CONC":".232","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":"ROOF BOLTER (SINGLE HEAD)","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2000-08-02"}]},{"id":"msha-controller-operator-history","name":"Controller and Operator History","domains":["identity","compliance"],"products":["historical ownership attribution","operator transitions","valid-time joins"],"rowCount":5,"firstDate":"1996-04-01","lastDate":"1998-01-27","metrics":{"recentRows":0,"currentOperatorTenures":3,"completedOperatorTenures":2},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":18,"firstDate":"2000-01-04","lastDate":"2001-08-20","metrics":{"inspectors":22,"recentRows":0,"onSiteHours":172,"inspectionHours":241.75,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"75146","EVENT_NO":"4174015","INSPECTION_BEGIN_DT":"08/20/2001","INSPECTION_END_DT":"08/20/2001","ACTIVITY_CODE":"CAA","ACTIVITY":"SPOT INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2001-08-20"},{"SOURCE_ROW_NUMBER":"953042","EVENT_NO":"4174001","INSPECTION_BEGIN_DT":"05/15/2001","INSPECTION_END_DT":"05/15/2001","ACTIVITY_CODE":"AAA","ACTIVITY":"Regular Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2001-05-15"},{"SOURCE_ROW_NUMBER":"193986","EVENT_NO":"4165825","INSPECTION_BEGIN_DT":"03/26/2001","INSPECTION_END_DT":"03/29/2001","ACTIVITY_CODE":"AAA","ACTIVITY":"Regular Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2001-03-26"},{"SOURCE_ROW_NUMBER":"102667","EVENT_NO":"6189130","INSPECTION_BEGIN_DT":"12/27/2000","INSPECTION_END_DT":"12/27/2000","ACTIVITY_CODE":"CAA","ACTIVITY":"SPOT INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2000-12-27"},{"SOURCE_ROW_NUMBER":"312912","EVENT_NO":"4165332","INSPECTION_BEGIN_DT":"10/18/2000","INSPECTION_END_DT":"12/12/2000","ACTIVITY_CODE":"AAA","ACTIVITY":"Regular Inspection","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"10.25","SUM_TOTAL_ON_SITE_HOURS":"1.5","sourceDate":"2000-10-18"},{"SOURCE_ROW_NUMBER":"645696","EVENT_NO":"4165306","INSPECTION_BEGIN_DT":"08/02/2000","INSPECTION_END_DT":"08/02/2000","ACTIVITY_CODE":"CED","ACTIVITY":"RESP DUST TECHNICAL INVESTIGATION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2000-08-02"},{"SOURCE_ROW_NUMBER":"505976","EVENT_NO":"4165305","INSPECTION_BEGIN_DT":"08/02/2000","INSPECTION_END_DT":"08/02/2000","ACTIVITY_CODE":"BAB","ACTIVITY":"RESP DUST TECH INSP - U. G. MINES","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"10","SUM_TOTAL_ON_SITE_HOURS":"7","sourceDate":"2000-08-02"},{"SOURCE_ROW_NUMBER":"682184","EVENT_NO":"4165302","INSPECTION_BEGIN_DT":"07/26/2000","INSPECTION_END_DT":"07/26/2000","ACTIVITY_CODE":"BBB","ACTIVITY":"NOISE TECHNICAL INVESTIGATION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6","SUM_TOTAL_ON_SITE_HOURS":"4.5","sourceDate":"2000-07-26"},{"SOURCE_ROW_NUMBER":"853033","EVENT_NO":"6190610","INSPECTION_BEGIN_DT":"07/19/2000","INSPECTION_END_DT":"08/01/2000","ACTIVITY_CODE":"AAA","ACTIVITY":"Regular Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"31.5","SUM_TOTAL_ON_SITE_HOURS":"22.5","sourceDate":"2000-07-19"},{"SOURCE_ROW_NUMBER":"277785","EVENT_NO":"6141968","INSPECTION_BEGIN_DT":"06/06/2000","INSPECTION_END_DT":"06/16/2000","ACTIVITY_CODE":"BAB","ACTIVITY":"RESP DUST TECH INSP - U. G. MINES","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"13","SUM_TOTAL_ON_SITE_HOURS":"9","sourceDate":"2000-06-06"},{"SOURCE_ROW_NUMBER":"164264","EVENT_NO":"6141959","INSPECTION_BEGIN_DT":"05/04/2000","INSPECTION_END_DT":"06/27/2000","ACTIVITY_CODE":"AAA","ACTIVITY":"Regular Inspection","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"49.5","SUM_TOTAL_ON_SITE_HOURS":"37","sourceDate":"2000-05-04"},{"SOURCE_ROW_NUMBER":"94053","EVENT_NO":"6141955","INSPECTION_BEGIN_DT":"04/13/2000","INSPECTION_END_DT":"04/24/2000","ACTIVITY_CODE":"BAB","ACTIVITY":"RESP DUST TECH INSP - U. G. MINES","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"14","SUM_TOTAL_ON_SITE_HOURS":"8.5","sourceDate":"2000-04-13"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":10,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2001-Q1":{"hours":0,"employees":0,"production":0},"2000-Q4":{"hours":1355,"employees":28,"production":2021},"2000-Q3":{"hours":16843,"employees":28,"production":47480},"2000-Q2":{"hours":15336,"employees":27,"production":55002},"2000-Q1":{"hours":19002,"employees":31,"production":58037}},"recentRecords":[]},{"id":"msha-mine-production-yearly","name":"Mine Employment and Production — Yearly","domains":["production","safety","compliance"],"products":["annual trend","backfill","quarterly reconciliation"],"rowCount":2,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2000":{"hours":52536,"employees":28,"production":162540}},"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":9,"firstDate":"2000-01-13","lastDate":"2000-01-13","metrics":{"recentRows":0,"doseOver100":0,"actDoseTotal":239,"pelDoseTotal":166},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"63470","EVENT_NO":"6147515","SURVEY_DATE":"01/13/2000","OCCUPATION_CD_DESC":"SHOTFIRER HELPER","MACHINE_CD":"01","MANUFACTURER_CD":"001","ACT_DOSE_85":"22","PEL_DOSE_90":"16","SURVEY_TYPE":"I","sourceDate":"2000-01-13"},{"SOURCE_ROW_NUMBER":"63469","EVENT_NO":"6147515","SURVEY_DATE":"01/13/2000","OCCUPATION_CD_DESC":"ELECTRICIAN","MACHINE_CD":"01","MANUFACTURER_CD":"001","ACT_DOSE_85":"10","PEL_DOSE_90":"4","SURVEY_TYPE":"I","sourceDate":"2000-01-13"},{"SOURCE_ROW_NUMBER":"63468","EVENT_NO":"6147515","SURVEY_DATE":"01/13/2000","OCCUPATION_CD_DESC":"SHOTFIRER HELPER","MACHINE_CD":"41","MANUFACTURER_CD":"120","ACT_DOSE_85":"22","PEL_DOSE_90":"16","SURVEY_TYPE":"I","sourceDate":"2000-01-13"},{"SOURCE_ROW_NUMBER":"63467","EVENT_NO":"6147515","SURVEY_DATE":"01/13/2000","OCCUPATION_CD_DESC":"ROOF BOLTER (SINGLE HEAD)","MACHINE_CD":"30","MANUFACTURER_CD":"039","ACT_DOSE_85":"34","PEL_DOSE_90":"34","SURVEY_TYPE":"I","sourceDate":"2000-01-13"},{"SOURCE_ROW_NUMBER":"63466","EVENT_NO":"6147515","SURVEY_DATE":"01/13/2000","OCCUPATION_CD_DESC":"ROOF BOLTER (SINGLE HEAD)","MACHINE_CD":"30","MANUFACTURER_CD":"039","ACT_DOSE_85":"49","PEL_DOSE_90":"34","SURVEY_TYPE":"I","sourceDate":"2000-01-13"},{"SOURCE_ROW_NUMBER":"63465","EVENT_NO":"6147515","SURVEY_DATE":"01/13/2000","OCCUPATION_CD_DESC":"SCOOP CAR OPERATOR","MACHINE_CD":"38","MANUFACTURER_CD":"098","ACT_DOSE_85":"49","PEL_DOSE_90":"19","SURVEY_TYPE":"I","sourceDate":"2000-01-13"},{"SOURCE_ROW_NUMBER":"63464","EVENT_NO":"6147515","SURVEY_DATE":"01/13/2000","OCCUPATION_CD_DESC":"LABORER/BLACKSMITH","MACHINE_CD":"01","MANUFACTURER_CD":"001","ACT_DOSE_85":"11","PEL_DOSE_90":"6","SURVEY_TYPE":"I","sourceDate":"2000-01-13"},{"SOURCE_ROW_NUMBER":"63463","EVENT_NO":"6147515","SURVEY_DATE":"01/13/2000","OCCUPATION_CD_DESC":"CUTTING MACHINE OPERATOR","MACHINE_CD":"11","MANUFACTURER_CD":"058","ACT_DOSE_85":"31","PEL_DOSE_90":"31","SURVEY_TYPE":"I","sourceDate":"2000-01-13"},{"SOURCE_ROW_NUMBER":"63462","EVENT_NO":"6147515","SURVEY_DATE":"01/13/2000","OCCUPATION_CD_DESC":"ELECTRICIAN","MACHINE_CD":"41","MANUFACTURER_CD":"120","ACT_DOSE_85":"11","PEL_DOSE_90":"6","SURVEY_TYPE":"I","sourceDate":"2000-01-13"}]},{"id":"msha-quartz-samples","name":"Quartz Samples — Coal","domains":["health","safety"],"products":["quartz exposure trends","occupation context","applicable-rule linkage"],"rowCount":3,"firstDate":"2000-01-13","lastDate":"2000-04-13","metrics":{"recentRows":0,"voidSamples":0,"maxQuartzPct":2.2,"validSamples":3,"quartzPctTotal":4.5},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"115784","CASSETTE_NO":"57250417","SAMPLE_DT":"04/13/2000","QUARTZ_PCT":"01.8","OCC_CODE_DESC":"OCCUPATION CODE NOT FOUND","SAMPLE_TYPE_DESC":"DESIGNATED AREA","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2000-04-13"},{"SOURCE_ROW_NUMBER":"65975","CASSETTE_NO":"57250360","SAMPLE_DT":"04/13/2000","QUARTZ_PCT":"02.2","OCC_CODE_DESC":"CUTTING MACHINE OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2000-04-13"},{"SOURCE_ROW_NUMBER":"154238","CASSETTE_NO":"57259100","SAMPLE_DT":"01/13/2000","QUARTZ_PCT":"00.5","OCC_CODE_DESC":"CUTTING MACHINE OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED OCCUPATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2000-01-13"}]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":26,"firstDate":"2000-01-10","lastDate":"2000-12-27","metrics":{"ss":13,"amountDue":2963,"contested":0,"amountPaid":2897,"recentRows":0,"section104d":0,"unterminated":2,"proposedPenalty":2963},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"921016","VIOLATION_NO":"4505379","VIOLATION_ISSUE_DT":"12/27/2000","PART_SECTION":"75.1711-3","CIT_ORD_SAFE":"Order","NO_AFFECTED":"0","TERMINATION_DT":"05/15/2001","CONTESTED_IND":"N","sourceDate":"2000-12-27"},{"SOURCE_ROW_NUMBER":"921015","VIOLATION_NO":"4505377","VIOLATION_ISSUE_DT":"12/12/2000","SIG_SUB":"Y","PART_SECTION":"75.1711-3","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","PROPOSED_PENALTY":"161","AMOUNT_DUE":"161","AMOUNT_PAID":"161","CONTESTED_IND":"N","sourceDate":"2000-12-12"},{"SOURCE_ROW_NUMBER":"921014","VIOLATION_NO":"7364101","VIOLATION_ISSUE_DT":"08/02/2000","SIG_SUB":"Y","PART_SECTION":"72.630(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"8","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"08/02/2000","PROPOSED_PENALTY":"259","AMOUNT_DUE":"259","AMOUNT_PAID":"259","CONTESTED_IND":"N","sourceDate":"2000-08-02"},{"SOURCE_ROW_NUMBER":"921013","VIOLATION_NO":"7364136","VIOLATION_ISSUE_DT":"07/24/2000","SIG_SUB":"N","PART_SECTION":"75.342(a)(4)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"07/24/2000","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2000-07-24"},{"SOURCE_ROW_NUMBER":"921012","VIOLATION_NO":"7364135","VIOLATION_ISSUE_DT":"07/19/2000","SIG_SUB":"Y","PART_SECTION":"75.370(a)(1)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"10","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"07/19/2000","PROPOSED_PENALTY":"259","AMOUNT_DUE":"259","AMOUNT_PAID":"259","CONTESTED_IND":"N","sourceDate":"2000-07-19"},{"SOURCE_ROW_NUMBER":"921011","VIOLATION_NO":"7364134","VIOLATION_ISSUE_DT":"07/19/2000","SIG_SUB":"Y","PART_SECTION":"77.400(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"07/24/2000","PROPOSED_PENALTY":"140","AMOUNT_DUE":"140","AMOUNT_PAID":"140","CONTESTED_IND":"N","sourceDate":"2000-07-19"},{"SOURCE_ROW_NUMBER":"921010","VIOLATION_NO":"7364133","VIOLATION_ISSUE_DT":"07/19/2000","SIG_SUB":"Y","PART_SECTION":"77.215(g)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"10","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"07/24/2000","PROPOSED_PENALTY":"259","AMOUNT_DUE":"259","AMOUNT_PAID":"259","CONTESTED_IND":"N","sourceDate":"2000-07-19"},{"SOURCE_ROW_NUMBER":"921009","VIOLATION_NO":"7364771","VIOLATION_ISSUE_DT":"06/27/2000","SIG_SUB":"Y","PART_SECTION":"75.604(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"06/27/2000","PROPOSED_PENALTY":"161","AMOUNT_DUE":"161","AMOUNT_PAID":"161","CONTESTED_IND":"N","sourceDate":"2000-06-27"},{"SOURCE_ROW_NUMBER":"921008","VIOLATION_NO":"7349672","VIOLATION_ISSUE_DT":"06/20/2000","SIG_SUB":"N","PART_SECTION":"77.1605(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"06/20/2000","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2000-06-20"},{"SOURCE_ROW_NUMBER":"921005","VIOLATION_NO":"7364047","VIOLATION_ISSUE_DT":"03/27/2000","SIG_SUB":"Y","PART_SECTION":"75.403","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"14","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"04/03/2000","PROPOSED_PENALTY":"294","AMOUNT_DUE":"294","AMOUNT_PAID":"294","CONTESTED_IND":"N","sourceDate":"2000-03-27"},{"SOURCE_ROW_NUMBER":"921007","VIOLATION_NO":"7369084","VIOLATION_ISSUE_DT":"03/21/2000","SIG_SUB":"Y","PART_SECTION":"77.1601","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"03/21/2000","PROPOSED_PENALTY":"66","AMOUNT_DUE":"66","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2000-03-21"},{"SOURCE_ROW_NUMBER":"921006","VIOLATION_NO":"7369083","VIOLATION_ISSUE_DT":"03/21/2000","SIG_SUB":"N","PART_SECTION":"77.215-2(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"03/30/2000","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2000-03-21"}]}],"safety":{"href":"/api/v1/mines/1517767/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/1517767/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","heading":"Openings of active mines.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1711-3","part":"75","subchapter":"O","subpart":"R","id":"75.1711-3","citation":"30 CFR 75.1711-3","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":2},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 72.630","heading":"Drill dust control at underground areas of underground mines.","id":"72.630","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-72/subpart-E/section-72.630","part":"72","partHeading":"PART 72—HEALTH STANDARDS FOR COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"E","subpartHeading":"Subpart E—Miscellaneous","text":"(a) Dust resulting from drilling in rock shall be controlled by use of permissible dust collectors, or by water, or water with a wetting agent, or by ventilation, or by any other method or device approved by the Secretary that is as effective in controlling the dust.\n\n(b) Dust collectors. Dust collectors shall be maintained in permissible and operating condition. Dust collectors approved under Part 33—Dust Collectors for Use in Connection with Rock Drilling in Coal Mines of this title or under Bureau of Mines Schedule 25B are permissible dust collectors for the purpose of this section.\n\n(c) Water control. Water used to control dust from drilling rock shall be applied through a hollow drill steel or stem or by the flooding of vertical drill holes in the floor.\n\n(d) Ventilation control. To adequately control dust from drilling rock, the air current shall be so directed that the dust is readily dispersed and carried away from the drill operator or any other miners in the area.","occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.342","heading":"Methane monitors.","id":"75.342","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.342","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"D","subpartHeading":"Subpart D—Ventilation","text":"(a)(1) MSHA approved methane monitors shall be installed on all face cutting machines, continuous miners, longwall face equipment, loading machines, and other mechanized equipment used to extract or load coal within the working place.\n\n(2) The sensing device for methane monitors on longwall shearing machines shall be installed at the return air end of the longwall face. An additional sensing device also shall be installed on the longwall shearing machine, downwind and as close to the cutting head as practicable. An alternative location or locations for the sensing device required on the longwall shearing machine may be approved in the ventilation plan.\n\n(3) The sensing devices of methane monitors shall be installed as close to the working face as practicable.\n\n(4) Methane monitors shall be maintained in permissible and proper operating condition and shall be calibrated with a known air-methane mixture at least once every 31 days. To assure that methane monitors are properly maintained and calibrated, the operator shall:\n\n(i) Use persons properly trained in the maintenance, calibration, and permissibility of methane monitors to calibrate and maintain the devices.\n\n(ii) Maintain a record of all calibration tests of methane monitors. Records shall be maintained in a secure book that is not susceptible to alteration or electronically in a computer system so as to be secure and not susceptible to alteration.\n\n(iii) Retain the record of calibration tests for 1 year from the date of the test. Records shall be retained at a surface location at the mine and made available for inspection by authorized representatives of the Secretary and the representative of miners.\n\n(b)(1) When the methane concentration at any methane monitor reaches 1.0 percent the monitor shall give a warning signal.\n\n(2) The warning signal device of the methane monitor shall be visible to a person who can deenergize electric equipment or shut down diesel-powered equipment on which the monitor is mounted.\n\n(c) The methane monitor shall automatically deenergize electric equipment or shut down diesel-powered equipment on which it is mounted when—\n\n(1) The methane concentration at any methane monitor reaches 2.0 percent; or\n\n(2) The monitor is not operating properly.\n\n[61 FR 9829, Mar. 11, 1996, as amended at 61 FR 55527, Oct. 25, 1996]","occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.370","heading":"Mine ventilation plan; submission and approval.","id":"75.370","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.370","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"D","subpartHeading":"Subpart D—Ventilation","text":"(a)(1) The operator shall develop and follow a ventilation plan approved by the district manager. The plan shall be designed to control methane and respirable dust and shall be suitable to the conditions and mining system at the mine. The ventilation plan shall consist of two parts, the plan content as prescribed in § 75.371 and the ventilation map with information as prescribed in § 75.372. Only that portion of the map which contains information required under § 75.371 will be subject to approval by the district manager.\n\n(2) The proposed ventilation plan and any revision to the plan shall be submitted in writing to the district manager. When revisions to a ventilation plan are proposed, only the revised pages, maps, or sketches of the plan need to be submitted. When required in writing by the district manager, the operator shall submit a fully revised plan by consolidating the plan and all revisions in an orderly manner and by deleting all outdated material.\n\n(3) (i) The mine operator shall notify the representative of miners at least 5 days prior to submission of a mine ventilation plan and any revision to a mine ventilation plan. If requested, the mine operator shall provide a copy to the representative of miners at the time of notification. In the event of a situation requiring immediate action on a plan revision, notification of the revision shall be given, and if requested, a copy of the revision shall be provided, to the representative of miners by the operator at the time of submittal;\n\n(ii) A copy of the proposed ventilation plan, and a copy of any proposed revision, submitted for approval shall be made available for inspection by the representative of miners; and\n\n(iii) A copy of the proposed ventilation plan, and a copy of any proposed revision, submitted for approval shall be posted on the mine bulletin board at the time of submittal. The proposed plan or proposed revision shall remain posted until it is approved, withdrawn or denied.\n\n(b) Following receipt of the proposed plan or proposed revision, the representative of miners may submit timely comments to the district manager, in writing, for consideration during the review process. A copy of these comments shall also be provided to the operator by the district manager upon request.\n\n(c) (1) The district manager will notify the operator in writing of the approval or denial of approval of a proposed ventilation plan or proposed revision. A copy of this notification will be sent to the representative of miners by the district manager.\n\n(2) If the district manager denies approval of a proposed plan or revision, the deficiencies of the plan or revision shall be specified in writing and the operator will be provided an opportunity to discuss the deficiencies with the district manager.\n\n(d) No proposed ventilation plan shall be implemented before it is approved by the district manager. Any intentional change to the ventilation system that alters the main air current or any split of the main air current in a manner that could materially affect the safety and health of the miners, or any change to the information required in § 75.371 shall be submitted to and approved by the district manager before implementation.\n\n(e) Before implementing an approved ventilation plan or a revision to a ventilation plan, persons affected by the revision shall be instructed by the operator in its provisions.\n\n(f) The approved ventilation plan and any revisions shall be—\n\n(1) Provided upon request to the representative of miners by the operator following notification of approval;\n\n(2) Made available for inspection by the representative of miners; and\n\n(3) Posted on the mine bulletin board within 1 working day following notification of approval. The approved plan and revisions shall remain posted on the bulletin board for the period that they are in effect.\n\n(g) The ventilation plan for each mine shall be reviewed every 6 months by an authorized representative of the Secretary to assure that it is suitable to current conditions in the mine.","occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 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":"Refuse piles; construction requirements.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.215","part":"77","subchapter":"O","subpart":"C","id":"77.215","citation":"30 CFR 77.215","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 75.604","heading":"Permanent splicing of trailing cables.","id":"75.604","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-G/section-75.604","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"G","subpartHeading":"Subpart G—Trailing Cables","text":"[Statutory Provisions]\n\nWhen permanent splices in trailing cables are made, they shall be:\n\n(a) Mechanically strong with adequate electrical conductivity and flexibility;\n\n(b) Effectively insulated and sealed so as to exclude moisture; and\n\n(c) Vulcanized or otherwise treated with suitable materials to provide flame-resistant qualities and good bonding to the outer jacket.\n\n(d) Made using splice kits accepted or approved by MSHA as flame resistant.\n\n[35 FR 17890, Nov. 20, 1970, as amended at 57 FR 61223, Dec. 23, 1992]","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 75.403","heading":"Maintenance of incombustible content of rock dust.","id":"75.403","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-E/section-75.403","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"E","subpartHeading":"Subpart E—Combustible Materials and Rock Dusting","text":"Where rock dust is required to be applied, it shall be distributed upon the top, floor, and sides of all underground areas of a coal mine and maintained in such quantities that the incombustible content of the combined coal dust, rock dust, and other dust shall be not less than 80 percent. Where methane is present in any ventilating current, the percent of incombustible content of such combined dust shall be increased 0.4 percent for each 0.1 percent of methane.\n\n[75 FR 57857, Sept. 23, 2010; 76 FR 35978, June 21, 2011]","occurrenceCount":1},{"chapter":"I","heading":"Transportation of persons; restrictions.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1601","part":"77","subchapter":"O","subpart":"Q","id":"77.1601","citation":"30 CFR 77.1601","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","heading":"Refuse piles; reporting requirements.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.215-2","part":"77","subchapter":"O","subpart":"C","id":"77.215-2","citation":"30 CFR 77.215-2","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}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"1517767","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}