{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-17T06:17:15.228Z","identity":{"mine_id":"1800776","name":"Walker Mine","status":"Temporarily Idled","status_date":"2021-01-27","mine_type":"Surface","coal_metal":"C","commodity":"Coal (Bituminous)","state":"MD","county":"Allegany","nearest_town":"Midlothian","operator_id":"0094965","operator_name":"Heritage Coal & Natural Resources, LLC","controller_id":"0182320","controller_name":"KTRV LLC","district":"C03","office":"Morgantown WV Field Office","employees":0,"latitude":39.632222,"longitude":-78.962222},"coverage":{"contributingSources":11,"registeredSources":20,"sourceRows":349},"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":"2026-10-17T05:35:58.500035+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":"1800776","name":"Walker Mine"},"operator":{"type":"operator","id":"0094965","name":"Heritage Coal & Natural Resources, LLC"},"controller":{"type":"controller","id":"0182320","name":"KTRV LLC"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0078864","name":"Walker Brothers Mining, Inc."},"object":{"type":"mine","id":"1800776","name":"Walker Mine"},"validFrom":"2007-03-07","validTo":"2019-02-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800776|0078864|2007-03-07|2019-02-10"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0066291","name":"George K  Walker"},"object":{"type":"mine","id":"1800776","name":"Walker Mine"},"validFrom":"2007-03-07","validTo":"2013-08-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800776|0066291|2007-03-07|2013-08-29"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0066291","name":"George K  Walker"},"object":{"type":"operator","id":"0078864","name":"Walker Brothers Mining, Inc."},"validFrom":"2007-03-07","validTo":"2013-08-29","current":false,"derived":true,"evidenceMineId":"1800776","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800776|0078864|2007-03-07|0066291|2007-03-07|9189"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0040547","name":"Jody L  Ritchie"},"object":{"type":"mine","id":"1800776","name":"Walker Mine"},"validFrom":"2007-11-30","validTo":"2022-03-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800776|0040547|2007-11-30|2022-03-15"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0079953","name":"Angela  Svonavec"},"object":{"type":"mine","id":"1800776","name":"Walker Mine"},"validFrom":"2008-09-03","validTo":"2024-02-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800776|0079953|2008-09-03|2024-02-04"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0110683","name":"Samuel  Walker"},"object":{"type":"mine","id":"1800776","name":"Walker Mine"},"validFrom":"2013-08-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800776|0110683|2013-08-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0110683","name":"Samuel  Walker"},"object":{"type":"operator","id":"0078864","name":"Walker Brothers Mining, Inc."},"validFrom":"2013-08-30","validTo":"2019-02-10","current":false,"derived":true,"evidenceMineId":"1800776","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800776|0078864|2007-03-07|0110683|2013-08-30|20287"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0085026","name":"Beechwood Coal, LLC"},"object":{"type":"mine","id":"1800776","name":"Walker Mine"},"validFrom":"2019-02-11","validTo":"2021-07-13","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800776|0085026|2019-02-11|2021-07-13"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0040547","name":"Jody L  Ritchie"},"object":{"type":"operator","id":"0085026","name":"Beechwood Coal, LLC"},"validFrom":"2019-02-11","validTo":"2021-07-13","current":false,"derived":true,"evidenceMineId":"1800776","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800776|0085026|2019-02-11|0040547|2007-11-30|199"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0094965","name":"Heritage Coal & Natural Resources, LLC"},"object":{"type":"mine","id":"1800776","name":"Walker Mine"},"validFrom":"2021-07-14","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800776|0094965|2021-07-14|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0079953","name":"Angela  Svonavec"},"object":{"type":"operator","id":"0094965","name":"Heritage Coal & Natural Resources, LLC"},"validFrom":"2021-07-14","validTo":"2024-02-04","current":false,"derived":true,"evidenceMineId":"1800776","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800776|0094965|2021-07-14|0079953|2008-09-03|12560"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0167620","name":"Faith  Ritchie et al"},"object":{"type":"mine","id":"1800776","name":"Walker Mine"},"validFrom":"2022-03-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800776|0167620|2022-03-16|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0167620","name":"Faith  Ritchie et al"},"object":{"type":"operator","id":"0085026","name":"Beechwood Coal, LLC"},"validFrom":"2022-03-16","validTo":"2021-07-13","current":false,"derived":true,"evidenceMineId":"1800776","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800776|0085026|2019-02-11|0167620|2022-03-16|35331"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0167620","name":"Jody L Ritchie et al"},"object":{"type":"operator","id":"0085026","name":"Beechwood Coal, LLC"},"validFrom":"2022-03-16","validTo":"2021-07-13","current":false,"derived":true,"evidenceMineId":"1800776","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800776|0085026|2019-02-11|0167620|2022-03-16|35332"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0182320","name":"KTRV LLC"},"object":{"type":"mine","id":"1800776","name":"Walker Mine"},"validFrom":"2024-02-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800776|0182320|2024-02-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0182320","name":"KTRV LLC"},"object":{"type":"operator","id":"0094965","name":"Heritage Coal & Natural Resources, LLC"},"validFrom":"2024-02-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"1800776","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800776|0094965|2021-07-14|0182320|2024-02-05|38929"}}],"coverage":{"historyRecords":7,"edgeCount":16,"intervalAnomalies":2,"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":1,"firstDate":"2016-08-04","lastDate":"2016-08-04","metrics":{"daysLost":6,"injuries":1,"fatalities":0,"recentRows":0,"restrictedDays":0,"contractorRecords":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"100428","DOCUMENT_NO":"220162310003","ACCIDENT_DT":"08/04/2016","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"POWERED HAULAGE","ACCIDENT_TYPE":"Struck against a moving object","OCCUPATION":"Haul/Off road/Coal/Ore/Pit/Quarry/Rock/Rubber tire truck driver, Transportation truck driver","NO_INJURIES":"1","DAYS_LOST":"6","NARRATIVE":"EE was driving a 773B 60 ton rode truck. EE primary duty was to take loads of material ie, rock, clay, soil from pit to storage area at storage area EE misjudged the berm and ran the pickup. Driver side truck remained level this shifted the load and threw the truck down on the driver side. EE went to the hospital by ambulance. Was given 3 days off by the hospital.","sourceDate":"2016-08-04"}]},{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"2021-01-27","lastDate":"2021-01-27","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":50,"firstDate":"2008-01-16","lastDate":"2019-04-02","metrics":{"ss":28,"delinquent":36,"recentRows":0,"paidPenalty":8408,"proposedPenalty":8526,"currentAssessment":8526},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1724825","VIOLATION_NO":"9121798","ISSUE_DT":"04/02/2019","CFR_STANDARD_CD":"77.1606(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"121.00","CURRENT_ASSESSMENT_AMT":"121.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2019-04-02"},{"SOURCE_ROW_NUMBER":"1724824","VIOLATION_NO":"9121797","ISSUE_DT":"04/02/2019","CFR_STANDARD_CD":"77.1606(c)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"121.00","CURRENT_ASSESSMENT_AMT":"121.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2019-04-02"},{"SOURCE_ROW_NUMBER":"1724640","VIOLATION_NO":"9121781","ISSUE_DT":"12/19/2018","CFR_STANDARD_CD":"71.403(c)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"121.00","CURRENT_ASSESSMENT_AMT":"121.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2018-12-19"},{"SOURCE_ROW_NUMBER":"1724639","VIOLATION_NO":"9121780","ISSUE_DT":"12/19/2018","CFR_STANDARD_CD":"77.1104","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"604.00","CURRENT_ASSESSMENT_AMT":"604.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2018-12-19"},{"SOURCE_ROW_NUMBER":"1724638","VIOLATION_NO":"9121699","ISSUE_DT":"12/19/2018","CFR_STANDARD_CD":"77.404(a)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"604.00","CURRENT_ASSESSMENT_AMT":"604.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2018-12-19"},{"SOURCE_ROW_NUMBER":"1724338","VIOLATION_NO":"9121534","ISSUE_DT":"04/23/2018","CFR_STANDARD_CD":"77.404(a)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"363.00","CURRENT_ASSESSMENT_AMT":"363.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2018-04-23"},{"SOURCE_ROW_NUMBER":"1724337","VIOLATION_NO":"9121533","ISSUE_DT":"04/23/2018","CFR_STANDARD_CD":"77.206(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"243.00","CURRENT_ASSESSMENT_AMT":"243.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2018-04-23"},{"SOURCE_ROW_NUMBER":"1724336","VIOLATION_NO":"9121532","ISSUE_DT":"04/23/2018","CFR_STANDARD_CD":"77.404(c)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"363.00","CURRENT_ASSESSMENT_AMT":"363.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2018-04-23"},{"SOURCE_ROW_NUMBER":"1724335","VIOLATION_NO":"9121531","ISSUE_DT":"04/23/2018","CFR_STANDARD_CD":"77.1110","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"118.00","CURRENT_ASSESSMENT_AMT":"118.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2018-04-23"},{"SOURCE_ROW_NUMBER":"1724302","VIOLATION_NO":"9121324","ISSUE_DT":"12/05/2017","CFR_STANDARD_CD":"77.1000","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"286.00","CURRENT_ASSESSMENT_AMT":"286.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2017-12-05"},{"SOURCE_ROW_NUMBER":"1724301","VIOLATION_NO":"9121323","ISSUE_DT":"12/05/2017","CFR_STANDARD_CD":"77.404(a)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"286.00","CURRENT_ASSESSMENT_AMT":"286.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2017-12-05"},{"SOURCE_ROW_NUMBER":"1724300","VIOLATION_NO":"9121258","ISSUE_DT":"10/23/2017","CFR_STANDARD_CD":"71.403(c)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"116.00","CURRENT_ASSESSMENT_AMT":"116.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2017-10-23"}]},{"id":"msha-coal-dust-samples","name":"Coal Dust Samples","domains":["health","safety"],"products":["respirable dust trends","CPDM coverage","void patterns","occupation exposure"],"rowCount":112,"firstDate":"2008-02-15","lastDate":"2020-09-08","metrics":{"recentRows":0,"cpdmSamples":0,"voidSamples":1,"validSamples":111,"maxConcentration":1.781,"concentrationTotal":25.584},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1184922","CASS_NUM":"58410851","SMP_TAKEN_DT":"9/8/2020","CONC":".063","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT USED ON INSPECTOR SAMPLES; NOT FOUND ON OPERATOR SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2020-09-08"},{"SOURCE_ROW_NUMBER":"729301","CASS_NUM":"51547499","SMP_TAKEN_DT":"9/8/2020","CONC":".067","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT YET USED IN DETERMINATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2020-09-08"},{"SOURCE_ROW_NUMBER":"439014","CASS_NUM":"58410720","SMP_TAKEN_DT":"9/8/2020","CONC":".013","SMP_TYPE_CD_DESC":"NONDESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT USED ON INSPECTOR SAMPLES; NOT FOUND ON OPERATOR SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"HIGHLIFT OPERATOR/FRONT END LOADER","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2020-09-08"},{"SOURCE_ROW_NUMBER":"1201771","CASS_NUM":"51547254","SMP_TAKEN_DT":"2/27/2020","CONC":".152","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT YET USED IN DETERMINATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2020-02-27"},{"SOURCE_ROW_NUMBER":"207289","CASS_NUM":"58387874","SMP_TAKEN_DT":"2/19/2020","CONC":".11","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT USED ON INSPECTOR SAMPLES; NOT FOUND ON OPERATOR SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2020-02-19"},{"SOURCE_ROW_NUMBER":"205364","CASS_NUM":"51542605","SMP_TAKEN_DT":"8/23/2019","CONC":".06","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT YET USED IN DETERMINATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2019-08-23"},{"SOURCE_ROW_NUMBER":"751478","CASS_NUM":"58355977","SMP_TAKEN_DT":"6/24/2019","CONC":".03","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT USED ON INSPECTOR SAMPLES; NOT FOUND ON OPERATOR SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2019-06-24"},{"SOURCE_ROW_NUMBER":"333391","CASS_NUM":"51542826","SMP_TAKEN_DT":"6/3/2019","CONC":".11","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT YET USED IN DETERMINATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2019-06-03"},{"SOURCE_ROW_NUMBER":"1105609","CASS_NUM":"58356212","SMP_TAKEN_DT":"4/3/2019","CONC":".158","SMP_TYPE_CD_DESC":"NONDESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT USED ON INSPECTOR SAMPLES; NOT FOUND ON OPERATOR SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2019-04-03"},{"SOURCE_ROW_NUMBER":"445598","CASS_NUM":"58356318","SMP_TAKEN_DT":"4/3/2019","CONC":"0","SMP_TYPE_CD_DESC":"NONDESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT USED ON INSPECTOR SAMPLES; NOT FOUND ON OPERATOR SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"HIGHLIFT OPERATOR/FRONT END LOADER","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2019-04-03"},{"SOURCE_ROW_NUMBER":"1575884","CASS_NUM":"58322584","SMP_TAKEN_DT":"12/19/2018","CONC":".01","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT USED ON INSPECTOR SAMPLES; NOT FOUND ON OPERATOR SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2018-12-19"},{"SOURCE_ROW_NUMBER":"1481406","CASS_NUM":"58322547","SMP_TAKEN_DT":"12/19/2018","CONC":".269","SMP_TYPE_CD_DESC":"NONDESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT USED ON INSPECTOR SAMPLES; NOT FOUND ON OPERATOR SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"REFUSE TRUCK DRIVER/BACKFILL TRUCK DRIVE","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2018-12-19"}]},{"id":"msha-controller-operator-history","name":"Controller and Operator History","domains":["identity","compliance"],"products":["historical ownership attribution","operator transitions","valid-time joins"],"rowCount":7,"firstDate":"2007-03-07","lastDate":"2021-07-14","metrics":{"recentRows":2,"currentOperatorTenures":2,"completedOperatorTenures":5},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":46,"firstDate":"2008-01-16","lastDate":"2026-06-03","metrics":{"inspectors":56,"recentRows":13,"onSiteHours":672,"inspectionHours":1057.25,"inspectionSamples":161},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1084912","EVENT_NO":"F02E556","INSPECTION_BEGIN_DT":"06/03/2026","INSPECTION_END_DT":"06/03/2026","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"8","SUM_TOTAL_ON_SITE_HOURS":"5.5","sourceDate":"2026-06-03"},{"SOURCE_ROW_NUMBER":"1104860","EVENT_NO":"F02A4FE","INSPECTION_BEGIN_DT":"12/30/2025","INSPECTION_END_DT":"12/30/2025","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"2.5","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2025-12-30"},{"SOURCE_ROW_NUMBER":"282187","EVENT_NO":"F006D76","INSPECTION_BEGIN_DT":"05/28/2025","INSPECTION_END_DT":"05/28/2025","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"6","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2025-05-28"},{"SOURCE_ROW_NUMBER":"666949","EVENT_NO":"F006D74","INSPECTION_BEGIN_DT":"05/19/2025","INSPECTION_END_DT":"05/19/2025","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":"1.5","sourceDate":"2025-05-19"},{"SOURCE_ROW_NUMBER":"803081","EVENT_NO":"F005149","INSPECTION_BEGIN_DT":"02/12/2025","INSPECTION_END_DT":"02/12/2025","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"1.5","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2025-02-12"},{"SOURCE_ROW_NUMBER":"368415","EVENT_NO":"F005238","INSPECTION_BEGIN_DT":"06/25/2024","INSPECTION_END_DT":"06/25/2024","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"3.75","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2024-06-25"},{"SOURCE_ROW_NUMBER":"430500","EVENT_NO":"7025576","INSPECTION_BEGIN_DT":"12/29/2023","INSPECTION_END_DT":"12/29/2023","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2023-12-29"},{"SOURCE_ROW_NUMBER":"1145478","EVENT_NO":"7025569","INSPECTION_BEGIN_DT":"09/05/2023","INSPECTION_END_DT":"09/05/2023","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"1.5","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2023-09-05"},{"SOURCE_ROW_NUMBER":"439940","EVENT_NO":"7025176","INSPECTION_BEGIN_DT":"12/15/2022","INSPECTION_END_DT":"12/15/2022","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2022-12-15"},{"SOURCE_ROW_NUMBER":"1022111","EVENT_NO":"7025137","INSPECTION_BEGIN_DT":"06/16/2022","INSPECTION_END_DT":"06/16/2022","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2022-06-16"},{"SOURCE_ROW_NUMBER":"704405","EVENT_NO":"7025188","INSPECTION_BEGIN_DT":"11/16/2021","INSPECTION_END_DT":"11/16/2021","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4.5","SUM_TOTAL_ON_SITE_HOURS":"1.5","sourceDate":"2021-11-16"},{"SOURCE_ROW_NUMBER":"742603","EVENT_NO":"7025038","INSPECTION_BEGIN_DT":"06/16/2021","INSPECTION_END_DT":"06/16/2021","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2021-06-16"}]},{"id":"msha-mine-production-yearly","name":"Mine Employment and Production — Yearly","domains":["production","safety","compliance"],"products":["annual trend","backfill","quarterly reconciliation"],"rowCount":15,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2012":{"hours":14928,"employees":8,"production":40251},"2013":{"hours":20183,"employees":10,"production":40354},"2014":{"hours":23166,"employees":12,"production":58052},"2015":{"hours":26177,"employees":13,"production":72368},"2016":{"hours":26203,"employees":11,"production":44829},"2017":{"hours":30904,"employees":15,"production":89245},"2018":{"hours":29071,"employees":12,"production":60237},"2019":{"hours":4356,"employees":2,"production":23319},"2020":{"hours":2423,"employees":2,"production":14122},"2021":{"hours":841,"employees":1,"production":9721}},"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":59,"firstDate":"2008-09-10","lastDate":"2020-09-08","metrics":{"recentRows":0,"doseOver100":1,"actDoseTotal":2451,"pelDoseTotal":1244},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"120407","EVENT_NO":"6274589","SURVEY_DATE":"09/08/2020","OCCUPATION_CD_DESC":"HIGHLIFT OPERATOR/FRONT END LOADER","MACHINE_CD":"18","MANUFACTURER_CD":"018","ACT_DOSE_85":"9","PEL_DOSE_90":"3","SURVEY_TYPE":"I","sourceDate":"2020-09-08"},{"SOURCE_ROW_NUMBER":"120406","EVENT_NO":"6274589","SURVEY_DATE":"09/08/2020","OCCUPATION_CD_DESC":"BULLDOZER OPERATOR","MACHINE_CD":"03","MANUFACTURER_CD":"018","ACT_DOSE_85":"77","PEL_DOSE_90":"46","SURVEY_TYPE":"I","sourceDate":"2020-09-08"},{"SOURCE_ROW_NUMBER":"120405","EVENT_NO":"6274472","SURVEY_DATE":"02/19/2020","OCCUPATION_CD_DESC":"BULLDOZER OPERATOR","MACHINE_CD":"03","MANUFACTURER_CD":"018","ACT_DOSE_85":"82","PEL_DOSE_90":"3","SURVEY_TYPE":"I","sourceDate":"2020-02-19"},{"SOURCE_ROW_NUMBER":"120404","EVENT_NO":"6266227","SURVEY_DATE":"04/03/2019","OCCUPATION_CD_DESC":"BULLDOZER OPERATOR","MACHINE_CD":"03","MANUFACTURER_CD":"018","ACT_DOSE_85":"32","PEL_DOSE_90":"7","SURVEY_TYPE":"I","sourceDate":"2019-04-03"},{"SOURCE_ROW_NUMBER":"120403","EVENT_NO":"6266227","SURVEY_DATE":"04/03/2019","OCCUPATION_CD_DESC":"BULLDOZER OPERATOR","MACHINE_CD":"03","MANUFACTURER_CD":"018","ACT_DOSE_85":"32","PEL_DOSE_90":"7","SURVEY_TYPE":"I","sourceDate":"2019-04-03"},{"SOURCE_ROW_NUMBER":"120402","EVENT_NO":"6266179","SURVEY_DATE":"12/19/2018","OCCUPATION_CD_DESC":"HIGHLIFT OPERATOR/FRONT END LOADER","MACHINE_CD":"18","MANUFACTURER_CD":"018","ACT_DOSE_85":"18","PEL_DOSE_90":"9","SURVEY_TYPE":"I","sourceDate":"2018-12-19"},{"SOURCE_ROW_NUMBER":"120401","EVENT_NO":"6266179","SURVEY_DATE":"12/19/2018","OCCUPATION_CD_DESC":"REFUSE TRUCK DRIVER/BACKFILL TRUCK DRIVE","MACHINE_CD":"39","MANUFACTURER_CD":"018","ACT_DOSE_85":"38","PEL_DOSE_90":"14","SURVEY_TYPE":"I","sourceDate":"2018-12-19"},{"SOURCE_ROW_NUMBER":"120400","EVENT_NO":"6266179","SURVEY_DATE":"12/19/2018","OCCUPATION_CD_DESC":"REFUSE TRUCK DRIVER/BACKFILL TRUCK DRIVE","MACHINE_CD":"39","MANUFACTURER_CD":"018","ACT_DOSE_85":"60","PEL_DOSE_90":"33","SURVEY_TYPE":"I","sourceDate":"2018-12-19"},{"SOURCE_ROW_NUMBER":"120399","EVENT_NO":"6266179","SURVEY_DATE":"12/19/2018","OCCUPATION_CD_DESC":"BULLDOZER OPERATOR","MACHINE_CD":"03","MANUFACTURER_CD":"018","ACT_DOSE_85":"51","PEL_DOSE_90":"22","SURVEY_TYPE":"I","sourceDate":"2018-12-19"},{"SOURCE_ROW_NUMBER":"120398","EVENT_NO":"6266179","SURVEY_DATE":"12/19/2018","OCCUPATION_CD_DESC":"BACKHOE OPERATOR","MACHINE_CD":"31","MANUFACTURER_CD":"119","ACT_DOSE_85":"13","PEL_DOSE_90":"1","SURVEY_TYPE":"I","sourceDate":"2018-12-19"},{"SOURCE_ROW_NUMBER":"120397","EVENT_NO":"6266179","SURVEY_DATE":"12/19/2018","OCCUPATION_CD_DESC":"REFUSE TRUCK DRIVER/BACKFILL TRUCK DRIVE","MACHINE_CD":"39","MANUFACTURER_CD":"018","ACT_DOSE_85":"54","PEL_DOSE_90":"19","SURVEY_TYPE":"I","sourceDate":"2018-12-19"},{"SOURCE_ROW_NUMBER":"120396","EVENT_NO":"6266059","SURVEY_DATE":"12/05/2017","OCCUPATION_CD_DESC":"BACKHOE OPERATOR","MACHINE_CD":"31","MANUFACTURER_CD":"018","ACT_DOSE_85":"29","PEL_DOSE_90":"13","SURVEY_TYPE":"I","sourceDate":"2017-12-05"}]},{"id":"msha-quartz-samples","name":"Quartz Samples — Coal","domains":["health","safety"],"products":["quartz exposure trends","occupation context","applicable-rule linkage"],"rowCount":6,"firstDate":"2009-08-19","lastDate":"2019-04-03","metrics":{"recentRows":0,"voidSamples":0,"maxQuartzPct":9,"validSamples":6,"quartzPctTotal":41.5},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"55334","CASSETTE_NO":"58356212","SAMPLE_DT":"04/03/2019","QUARTZ_PCT":"08.7","QUARTZ_MICROGRAMS":"13","OCC_CODE_DESC":"BULLDOZER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED WORK POSITION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2019-04-03"},{"SOURCE_ROW_NUMBER":"95666","CASSETTE_NO":"58322536","SAMPLE_DT":"04/23/2018","QUARTZ_PCT":"05.8","QUARTZ_MICROGRAMS":"21","OCC_CODE_DESC":"BULLDOZER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED WORK POSITION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2018-04-23"},{"SOURCE_ROW_NUMBER":"58992","CASSETTE_NO":"58272181","SAMPLE_DT":"12/05/2017","QUARTZ_PCT":"02.4","QUARTZ_MICROGRAMS":"16","OCC_CODE_DESC":"BULLDOZER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED WORK POSITION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2017-12-05"},{"SOURCE_ROW_NUMBER":"5683","CASSETTE_NO":"58272000","SAMPLE_DT":"06/06/2017","QUARTZ_PCT":"07.5","QUARTZ_MICROGRAMS":"13","OCC_CODE_DESC":"BULLDOZER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED WORK POSITION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2017-06-06"},{"SOURCE_ROW_NUMBER":"136023","CASSETTE_NO":"58141971","SAMPLE_DT":"08/05/2014","QUARTZ_PCT":"09.0","QUARTZ_MICROGRAMS":"31","OCC_CODE_DESC":"BULLDOZER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED WORK POSITION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2014-08-05"},{"SOURCE_ROW_NUMBER":"29977","CASSETTE_NO":"57820939","SAMPLE_DT":"08/19/2009","QUARTZ_PCT":"08.1","OCC_CODE_DESC":"BULLDOZER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED WORK POSITION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2009-08-19"}]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":51,"firstDate":"2008-01-16","lastDate":"2019-04-02","metrics":{"ss":28,"amountDue":8526,"contested":0,"amountPaid":8408,"recentRows":0,"section104d":0,"unterminated":0,"proposedPenalty":8526},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1263209","VIOLATION_NO":"9121798","VIOLATION_ISSUE_DT":"04/02/2019","SIG_SUB":"N","PART_SECTION":"77.1606(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"04/03/2019","PROPOSED_PENALTY":"121","AMOUNT_DUE":"121","AMOUNT_PAID":"121","CONTESTED_IND":"N","sourceDate":"2019-04-02"},{"SOURCE_ROW_NUMBER":"1263208","VIOLATION_NO":"9121797","VIOLATION_ISSUE_DT":"04/02/2019","SIG_SUB":"Y","PART_SECTION":"77.1606(c)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"04/02/2019","PROPOSED_PENALTY":"121","AMOUNT_DUE":"121","AMOUNT_PAID":"121","CONTESTED_IND":"N","sourceDate":"2019-04-02"},{"SOURCE_ROW_NUMBER":"1263243","VIOLATION_NO":"9121781","VIOLATION_ISSUE_DT":"12/19/2018","SIG_SUB":"N","PART_SECTION":"71.403(c)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"12/27/2018","PROPOSED_PENALTY":"121","AMOUNT_DUE":"121","AMOUNT_PAID":"121","CONTESTED_IND":"N","sourceDate":"2018-12-19"},{"SOURCE_ROW_NUMBER":"1263242","VIOLATION_NO":"9121780","VIOLATION_ISSUE_DT":"12/19/2018","SIG_SUB":"Y","PART_SECTION":"77.1104","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"12/27/2018","PROPOSED_PENALTY":"604","AMOUNT_DUE":"604","AMOUNT_PAID":"604","CONTESTED_IND":"N","sourceDate":"2018-12-19"},{"SOURCE_ROW_NUMBER":"1263241","VIOLATION_NO":"9121699","VIOLATION_ISSUE_DT":"12/19/2018","SIG_SUB":"Y","PART_SECTION":"77.404(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"12/27/2018","PROPOSED_PENALTY":"604","AMOUNT_DUE":"604","AMOUNT_PAID":"604","CONTESTED_IND":"N","sourceDate":"2018-12-19"},{"SOURCE_ROW_NUMBER":"1263213","VIOLATION_NO":"9121534","VIOLATION_ISSUE_DT":"04/23/2018","SIG_SUB":"Y","PART_SECTION":"77.404(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"04/23/2018","PROPOSED_PENALTY":"363","AMOUNT_DUE":"363","AMOUNT_PAID":"363","CONTESTED_IND":"N","sourceDate":"2018-04-23"},{"SOURCE_ROW_NUMBER":"1263212","VIOLATION_NO":"9121533","VIOLATION_ISSUE_DT":"04/23/2018","SIG_SUB":"N","PART_SECTION":"77.206(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"04/23/2018","PROPOSED_PENALTY":"243","AMOUNT_DUE":"243","AMOUNT_PAID":"243","CONTESTED_IND":"N","sourceDate":"2018-04-23"},{"SOURCE_ROW_NUMBER":"1263211","VIOLATION_NO":"9121532","VIOLATION_ISSUE_DT":"04/23/2018","SIG_SUB":"Y","PART_SECTION":"77.404(c)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"04/23/2018","PROPOSED_PENALTY":"363","AMOUNT_DUE":"363","AMOUNT_PAID":"363","CONTESTED_IND":"N","sourceDate":"2018-04-23"},{"SOURCE_ROW_NUMBER":"1263210","VIOLATION_NO":"9121531","VIOLATION_ISSUE_DT":"04/23/2018","SIG_SUB":"N","PART_SECTION":"77.1110","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"04/23/2018","PROPOSED_PENALTY":"118","AMOUNT_DUE":"118","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2018-04-23"},{"SOURCE_ROW_NUMBER":"1263248","VIOLATION_NO":"9121324","VIOLATION_ISSUE_DT":"12/05/2017","SIG_SUB":"Y","PART_SECTION":"77.1000","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"12/05/2017","PROPOSED_PENALTY":"286","AMOUNT_DUE":"286","AMOUNT_PAID":"286","CONTESTED_IND":"N","sourceDate":"2017-12-05"},{"SOURCE_ROW_NUMBER":"1263247","VIOLATION_NO":"9121323","VIOLATION_ISSUE_DT":"12/05/2017","SIG_SUB":"Y","PART_SECTION":"77.404(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"12/11/2017","PROPOSED_PENALTY":"286","AMOUNT_DUE":"286","AMOUNT_PAID":"286","CONTESTED_IND":"N","sourceDate":"2017-12-05"},{"SOURCE_ROW_NUMBER":"1263246","VIOLATION_NO":"9121258","VIOLATION_ISSUE_DT":"10/23/2017","SIG_SUB":"N","PART_SECTION":"71.403(c)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"10/31/2017","PROPOSED_PENALTY":"116","AMOUNT_DUE":"116","AMOUNT_PAID":"116","CONTESTED_IND":"N","sourceDate":"2017-10-23"}]}],"safety":{"href":"/api/v1/mines/1800776/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/1800776/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 77.1606","heading":"Loading and haulage equipment; inspection and maintenance.","id":"77.1606","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1606","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) Mobile loading and haulage equipment shall be inspected by a competent person before such equipment is placed in operation. Equipment defects affecting safety shall be recorded and reported to the mine operator.\n\n(b) Carriers on aerial tramways, including loading and unloading mechanisms, shall be inspected each shift; brakes shall be inspected daily; ropes and supports shall be inspected as recommended by the manufacturer or as physical conditions warrant. Equipment defects affecting safety shall be reported to the mine operator.\n\n(c) Equipment defects affecting safety shall be corrected before the equipment is used.","occurrenceCount":2},{"chapter":"I","heading":"Waiver of surface facilities requirements; posting of waiver.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-71/subpart-E/section-71.403","part":"71","subchapter":"O","subpart":"E","id":"71.403","citation":"30 CFR 71.403","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","partHeading":"PART 71—MANDATORY HEALTH STANDARDS—SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES","subpartHeading":"","text":null,"occurrenceCount":2},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 77.1104","heading":"Accumulations of combustible materials.","id":"77.1104","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1104","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":"L","subpartHeading":"Subpart L—Fire Protection","text":"Combustible materials, grease, lubricants, paints, or flammable liquids shall not be allowed to accumulate where they can create a fire hazard.","occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 77.404","heading":"Machinery and equipment; operation and maintenance.","id":"77.404","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.404","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) Mobile and stationary machinery and equipment shall be maintained in safe operating condition and machinery or equipment in unsafe condition shall be removed from service immediately.\n\n(b) Machinery and equipment shall be operated only by persons trained in the use of and authorized to operate such machinery or equipment.\n\n(c) Repairs or maintenance shall not be performed on machinery until the power is off and the machinery is blocked against motion, except where machinery motion is necessary to make adjustments.\n\n(d) Machinery shall not be lubricated while in motion where a hazard exists, unless equipped with extended fittings or cups.","occurrenceCount":4},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 77.206","heading":"Ladders; construction; installation and maintenance.","id":"77.206","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.206","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":"C","subpartHeading":"Subpart C—Surface Installations","text":"(a) Ladders shall be of substantial construction and maintained in good condition.\n\n(b) Wooden members of ladders shall not be painted.\n\n(c) Steep or vertical ladders which are used regularly at fixed locations shall be anchored securely and provided with backguards extending from a point not more than 7 feet from the bottom of the ladder to the top of the ladder.\n\n(d) Fixed ladders shall not incline backwards at any point unless provided with backguards.\n\n(e) Fixed ladders shall be anchored securely and installed to provide at least 3 inches of toe clearance.\n\n(f) Fixed ladders shall project at least 3 feet above landings, or substantial handholds shall be provided above the landings.","occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 77.1110","heading":"Examination and maintenance of firefighting equipment.","id":"77.1110","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1110","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":"L","subpartHeading":"Subpart L—Fire Protection","text":"Firefighting equipment shall be continuously maintained in a usable and operative condition. Fire extinguishers shall be examined at least once every 6 months and the date of such examination shall be recorded on a permanent tag attached to the extinguisher.\n\n(Pub. L. No. 96-511, 94 Stat. 2812 (44 U.S.C. 3501 et seq.))\n\n[36 FR 9364, May 22, 1971, as amended at 60 FR 33723, June 29, 1995]","occurrenceCount":1},{"chapter":"I","heading":"Highwalls, pits and spoil banks; plans.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-K/section-77.1000","part":"77","subchapter":"O","subpart":"K","id":"77.1000","citation":"30 CFR 77.1000","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":"1800776","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873}}