{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"1518207","name":"Bolen Branch #1","status":"Abandoned","status_date":"2003-07-29","mine_type":"Surface","coal_metal":"C","commodity":"Coal (Bituminous)","state":"KY","county":"Knott","nearest_town":"Leburn","operator_id":"P22986","operator_name":"Miller Brothers Coal Inc","controller_id":"C05094","controller_name":"Robert W  Miller; Dean  Miller","district":"C07","office":"Hazard KY Field Office","employees":0,"latitude":37.423888,"longitude":-82.927777},"coverage":{"contributingSources":15,"registeredSources":20,"sourceRows":405},"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":"1518207","name":"Bolen Branch #1"},"operator":{"type":"operator","id":"P22986","name":"Miller Brothers Coal Inc"},"controller":{"type":"controller","id":"C05094","name":"Robert W  Miller; Dean  Miller"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05094","name":"Dean  Miller Et Al"},"object":{"type":"mine","id":"1518207","name":"Bolen Branch #1"},"validFrom":"1981-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518207|C05094|1981-04-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P22986","name":"Miller Brothers Coal Inc"},"object":{"type":"mine","id":"1518207","name":"Bolen Branch #1"},"validFrom":"1999-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518207|P22986|1999-09-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05094","name":"Dean  Miller Et Al"},"object":{"type":"operator","id":"P22986","name":"Miller Brothers Coal Inc"},"validFrom":"1999-09-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1518207","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518207|P22986|1999-09-01|C05094|1981-04-01|67501"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05094","name":"Robert W  Miller Et Al"},"object":{"type":"operator","id":"P22986","name":"Miller Brothers Coal Inc"},"validFrom":"1999-09-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1518207","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518207|P22986|1999-09-01|C05094|1981-04-01|67502"}}],"coverage":{"historyRecords":2,"edgeCount":4,"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":"2001-02-09","lastDate":"2002-06-18","metrics":{"daysLost":77,"injuries":2,"fatalities":0,"recentRows":0,"restrictedDays":0,"contractorRecords":1},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"5809","DOCUMENT_NO":"220021830028","ACCIDENT_DT":"06/18/2002","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"SLIP OR FALL OF PERSON","ACCIDENT_TYPE":"Fall onto or against objects","OCCUPATION":"Truck driver","NO_INJURIES":"1","DAYS_LOST":"37","NARRATIVE":"FELL FROM FUEL TANK & LANDED ON A POLE THAT PUNCTURED HIS RIGHT BUTTOCK.","sourceDate":"2002-06-18"},{"SOURCE_ROW_NUMBER":"91631","DOCUMENT_NO":"220010510107","ACCIDENT_DT":"02/09/2001","DEGREE_INJURY":"OCCUPATNAL ILLNESS NOT DEG 1-6","CLASSIFICATION":"DISORDERS (REPEATED TRAUMA)","ACCIDENT_TYPE":"Over-exertion NEC","OCCUPATION":"Greaser, Grease man, Oiler, Lube man, Dragline oiler","NO_INJURIES":"1","DAYS_LOST":"40","NARRATIVE":"PHYSICIAN DIAGNOSED EMPLOYEE WITH CARPAL TUNNEL SYNDROME CAUSED BY NATURE OF EMPLOYEE'S JOB. CORRECTIVE SURGERY IS RECOMMENDED.","sourceDate":"2001-02-09"}]},{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"2003-07-29","lastDate":"2003-07-29","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":33,"firstDate":"2000-02-23","lastDate":"2003-02-12","metrics":{"ss":24,"delinquent":33,"recentRows":0,"paidPenalty":4779,"proposedPenalty":4779,"currentAssessment":4779},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1114553","VIOLATION_NO":"7472258","ISSUE_DT":"02/12/2003","CFR_STANDARD_CD":"77.1605(d)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"207.00","CURRENT_ASSESSMENT_AMT":"207.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2003-02-12"},{"SOURCE_ROW_NUMBER":"1114552","VIOLATION_NO":"7472257","ISSUE_DT":"02/12/2003","CFR_STANDARD_CD":"77.1605(d)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"207.00","CURRENT_ASSESSMENT_AMT":"207.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2003-02-12"},{"SOURCE_ROW_NUMBER":"1114448","VIOLATION_NO":"7472444","ISSUE_DT":"05/28/2002","CFR_STANDARD_CD":"77.404(a)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"196.00","CURRENT_ASSESSMENT_AMT":"196.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2002-05-28"},{"SOURCE_ROW_NUMBER":"1114447","VIOLATION_NO":"7472443","ISSUE_DT":"05/28/2002","CFR_STANDARD_CD":"77.404(a)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"196.00","CURRENT_ASSESSMENT_AMT":"196.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2002-05-28"},{"SOURCE_ROW_NUMBER":"1114446","VIOLATION_NO":"7472442","ISSUE_DT":"05/28/2002","CFR_STANDARD_CD":"77.404(a)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"196.00","CURRENT_ASSESSMENT_AMT":"196.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2002-05-28"},{"SOURCE_ROW_NUMBER":"1114445","VIOLATION_NO":"7472441","ISSUE_DT":"05/23/2002","CFR_STANDARD_CD":"77.404(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":"2002-05-23"},{"SOURCE_ROW_NUMBER":"1114444","VIOLATION_NO":"7472440","ISSUE_DT":"05/23/2002","CFR_STANDARD_CD":"77.404(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":"2002-05-23"},{"SOURCE_ROW_NUMBER":"1114443","VIOLATION_NO":"7472439","ISSUE_DT":"05/21/2002","CFR_STANDARD_CD":"77.1004(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":"2002-05-21"},{"SOURCE_ROW_NUMBER":"1114404","VIOLATION_NO":"7472403","ISSUE_DT":"01/29/2002","CFR_STANDARD_CD":"77.404(a)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"161.00","CURRENT_ASSESSMENT_AMT":"161.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2002-01-29"},{"SOURCE_ROW_NUMBER":"1114403","VIOLATION_NO":"7472402","ISSUE_DT":"01/29/2002","CFR_STANDARD_CD":"77.400(d)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"207.00","CURRENT_ASSESSMENT_AMT":"207.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2002-01-29"},{"SOURCE_ROW_NUMBER":"1114402","VIOLATION_NO":"7472401","ISSUE_DT":"01/29/2002","CFR_STANDARD_CD":"77.404(a)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"259.00","CURRENT_ASSESSMENT_AMT":"259.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2002-01-29"},{"SOURCE_ROW_NUMBER":"1114401","VIOLATION_NO":"7472400","ISSUE_DT":"01/28/2002","CFR_STANDARD_CD":"77.404(a)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"161.00","CURRENT_ASSESSMENT_AMT":"161.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2002-01-28"}]},{"id":"msha-coal-dust-samples","name":"Coal Dust Samples","domains":["health","safety"],"products":["respirable dust trends","CPDM coverage","void patterns","occupation exposure"],"rowCount":135,"firstDate":"2000-03-17","lastDate":"2003-03-06","metrics":{"recentRows":0,"cpdmSamples":0,"voidSamples":14,"validSamples":121,"maxConcentration":1.992,"concentrationTotal":29.631},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1310729","CASS_NUM":"50685991","SMP_TAKEN_DT":"3/6/2003","CONC":".181","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"BIMONTHLY CYCLE/TRANSITION PERIOD SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2003-03-06"},{"SOURCE_ROW_NUMBER":"462939","CASS_NUM":"50680443","SMP_TAKEN_DT":"12/13/2002","CONC":".149","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"BIMONTHLY CYCLE/TRANSITION PERIOD SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2002-12-13"},{"SOURCE_ROW_NUMBER":"1621997","CASS_NUM":"57468850","SMP_TAKEN_DT":"12/9/2002","CONC":".062","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":"2002-12-09"},{"SOURCE_ROW_NUMBER":"1546848","CASS_NUM":"57468822","SMP_TAKEN_DT":"12/9/2002","CONC":".535","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":"HIGHWALL DRILL OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2002-12-09"},{"SOURCE_ROW_NUMBER":"1495707","CASS_NUM":"57468846","SMP_TAKEN_DT":"12/9/2002","CONC":".059","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":"2002-12-09"},{"SOURCE_ROW_NUMBER":"1201417","CASS_NUM":"57468829","SMP_TAKEN_DT":"12/9/2002","CONC":".104","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":"2002-12-09"},{"SOURCE_ROW_NUMBER":"800043","CASS_NUM":"57468816","SMP_TAKEN_DT":"12/9/2002","CONC":".401","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":"2002-12-09"},{"SOURCE_ROW_NUMBER":"720942","CASS_NUM":"57468839","SMP_TAKEN_DT":"12/9/2002","CONC":".085","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":"HIGHWALL DRILL OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2002-12-09"},{"SOURCE_ROW_NUMBER":"562216","CASS_NUM":"57468837","SMP_TAKEN_DT":"12/9/2002","CONC":".198","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":"2002-12-09"},{"SOURCE_ROW_NUMBER":"470574","CASS_NUM":"57468830","SMP_TAKEN_DT":"12/9/2002","CONC":".085","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":"2002-12-09"},{"SOURCE_ROW_NUMBER":"1161097","CASS_NUM":"50674428","SMP_TAKEN_DT":"10/29/2002","CONC":".414","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"BIMONTHLY CYCLE/TRANSITION PERIOD SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2002-10-29"},{"SOURCE_ROW_NUMBER":"521211","CASS_NUM":"50667946","SMP_TAKEN_DT":"9/18/2002","CONC":".145","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"BIMONTHLY CYCLE/TRANSITION PERIOD SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2002-09-18"}]},{"id":"msha-conferences","name":"Conferences","domains":["compliance","legal"],"products":["conference history","post-issuance changes","citation lifecycle"],"rowCount":3,"firstDate":"2000-09-27","lastDate":"2000-09-27","metrics":{"linkedIssuances":3},"periods":{},"recentRecords":[]},{"id":"msha-contractor-production-quarterly","name":"Contractor Employment and Production — Quarterly","domains":["contractors","production","safety"],"products":["contractor exposure denominator","productivity","presence windows"],"rowCount":87,"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":23,"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":"1999-09-01","lastDate":"1999-09-01","metrics":{"recentRows":0,"currentOperatorTenures":2,"completedOperatorTenures":0},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":33,"firstDate":"2000-02-14","lastDate":"2003-07-28","metrics":{"inspectors":34,"recentRows":0,"onSiteHours":381.75,"inspectionHours":586.25,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"534416","EVENT_NO":"4242930","INSPECTION_BEGIN_DT":"07/28/2003","INSPECTION_END_DT":"07/29/2003","ACTIVITY_CODE":"CDB","ACTIVITY":"ACCIDENT PREVENTION SPOT INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2003-07-28"},{"SOURCE_ROW_NUMBER":"155341","EVENT_NO":"4243216","INSPECTION_BEGIN_DT":"07/07/2003","INSPECTION_END_DT":"07/07/2003","ACTIVITY_CODE":"AAA","ACTIVITY":"Regular Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"7","SUM_TOTAL_ON_SITE_HOURS":"4","sourceDate":"2003-07-07"},{"SOURCE_ROW_NUMBER":"516322","EVENT_NO":"4226388","INSPECTION_BEGIN_DT":"02/10/2003","INSPECTION_END_DT":"02/18/2003","ACTIVITY_CODE":"AAA","ACTIVITY":"Regular Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"31","SUM_TOTAL_ON_SITE_HOURS":"21.5","sourceDate":"2003-02-10"},{"SOURCE_ROW_NUMBER":"857025","EVENT_NO":"4242812","INSPECTION_BEGIN_DT":"01/06/2003","INSPECTION_END_DT":"01/07/2003","ACTIVITY_CODE":"CDB","ACTIVITY":"ACCIDENT PREVENTION SPOT INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2003-01-06"},{"SOURCE_ROW_NUMBER":"828048","EVENT_NO":"4242662","INSPECTION_BEGIN_DT":"12/09/2002","INSPECTION_END_DT":"01/06/2003","ACTIVITY_CODE":"BAF","ACTIVITY":"RESP DUST TECH INSP - SURFACE MINES","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8","SUM_TOTAL_ON_SITE_HOURS":"5.5","sourceDate":"2002-12-09"},{"SOURCE_ROW_NUMBER":"188108","EVENT_NO":"4242663","INSPECTION_BEGIN_DT":"12/09/2002","INSPECTION_END_DT":"01/06/2003","ACTIVITY_CODE":"BAF","ACTIVITY":"RESP DUST TECH INSP - SURFACE MINES","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"7","SUM_TOTAL_ON_SITE_HOURS":"4.5","sourceDate":"2002-12-09"},{"SOURCE_ROW_NUMBER":"1081374","EVENT_NO":"4232694","INSPECTION_BEGIN_DT":"07/29/2002","INSPECTION_END_DT":"07/30/2002","ACTIVITY_CODE":"BBB","ACTIVITY":"NOISE TECHNICAL INVESTIGATION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"5","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2002-07-29"},{"SOURCE_ROW_NUMBER":"660977","EVENT_NO":"4232695","INSPECTION_BEGIN_DT":"07/29/2002","INSPECTION_END_DT":"07/30/2002","ACTIVITY_CODE":"BBB","ACTIVITY":"NOISE TECHNICAL INVESTIGATION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"5.5","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2002-07-29"},{"SOURCE_ROW_NUMBER":"363423","EVENT_NO":"4232693","INSPECTION_BEGIN_DT":"07/29/2002","INSPECTION_END_DT":"07/30/2002","ACTIVITY_CODE":"BBB","ACTIVITY":"NOISE TECHNICAL INVESTIGATION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"5","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2002-07-29"},{"SOURCE_ROW_NUMBER":"118946","EVENT_NO":"4232692","INSPECTION_BEGIN_DT":"07/29/2002","INSPECTION_END_DT":"08/08/2002","ACTIVITY_CODE":"BAF","ACTIVITY":"RESP DUST TECH INSP - SURFACE MINES","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8.5","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2002-07-29"},{"SOURCE_ROW_NUMBER":"1015726","EVENT_NO":"4226183","INSPECTION_BEGIN_DT":"05/21/2002","INSPECTION_END_DT":"05/30/2002","ACTIVITY_CODE":"AAA","ACTIVITY":"Regular Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"50","SUM_TOTAL_ON_SITE_HOURS":"37","sourceDate":"2002-05-21"},{"SOURCE_ROW_NUMBER":"521757","EVENT_NO":"4226165","INSPECTION_BEGIN_DT":"02/12/2002","INSPECTION_END_DT":"02/12/2002","ACTIVITY_CODE":"CDB","ACTIVITY":"ACCIDENT PREVENTION SPOT INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"5","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2002-02-12"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":15,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2003-Q3":{"hours":551,"employees":2,"production":0},"2003-Q2":{"hours":3104,"employees":23,"production":0},"2003-Q1":{"hours":17153,"employees":41,"production":39937},"2002-Q4":{"hours":27025,"employees":38,"production":103919},"2002-Q3":{"hours":29806,"employees":42,"production":146403},"2002-Q2":{"hours":26117,"employees":44,"production":155638},"2002-Q1":{"hours":30976,"employees":45,"production":189641},"2001-Q4":{"hours":32161,"employees":45,"production":188758},"2001-Q3":{"hours":33861,"employees":49,"production":183510},"2001-Q2":{"hours":34497,"employees":47,"production":204645},"2001-Q1":{"hours":33904,"employees":47,"production":262837},"2000-Q4":{"hours":31245,"employees":44,"production":258480}},"recentRecords":[]},{"id":"msha-mine-production-yearly","name":"Mine Employment and Production — Yearly","domains":["production","safety","compliance"],"products":["annual trend","backfill","quarterly reconciliation"],"rowCount":4,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2000":{"hours":119220,"employees":43,"production":794853},"2001":{"hours":134423,"employees":47,"production":839750},"2002":{"hours":113924,"employees":42,"production":595601},"2003":{"hours":20808,"employees":22,"production":39937}},"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":24,"firstDate":"2000-03-07","lastDate":"2002-07-29","metrics":{"recentRows":0,"doseOver100":4,"actDoseTotal":1503,"pelDoseTotal":701},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"70160","EVENT_NO":"4232695","SURVEY_DATE":"07/29/2002","OCCUPATION_CD_DESC":"BULLDOZER OPERATOR","MACHINE_CD":"03","MANUFACTURER_CD":"018","ACT_DOSE_85":"130","PEL_DOSE_90":"110","SURVEY_TYPE":"F","sourceDate":"2002-07-29"},{"SOURCE_ROW_NUMBER":"70159","EVENT_NO":"4232695","SURVEY_DATE":"07/29/2002","OCCUPATION_CD_DESC":"REFUSE TRUCK DRIVER/BACKFILL TRUCK DRIVE","MACHINE_CD":"39","MANUFACTURER_CD":"018","ACT_DOSE_85":"26","PEL_DOSE_90":"5","SURVEY_TYPE":"F","sourceDate":"2002-07-29"},{"SOURCE_ROW_NUMBER":"70158","EVENT_NO":"4232695","SURVEY_DATE":"07/29/2002","OCCUPATION_CD_DESC":"HIGHLIFT OPERATOR/FRONT END LOADER","MACHINE_CD":"18","MANUFACTURER_CD":"018","ACT_DOSE_85":"47","PEL_DOSE_90":"7","SURVEY_TYPE":"F","sourceDate":"2002-07-29"},{"SOURCE_ROW_NUMBER":"70157","EVENT_NO":"4232694","SURVEY_DATE":"07/29/2002","OCCUPATION_CD_DESC":"REFUSE TRUCK DRIVER/BACKFILL TRUCK DRIVE","MACHINE_CD":"39","MANUFACTURER_CD":"018","ACT_DOSE_85":"41","PEL_DOSE_90":"11","SURVEY_TYPE":"F","sourceDate":"2002-07-29"},{"SOURCE_ROW_NUMBER":"70156","EVENT_NO":"4232694","SURVEY_DATE":"07/29/2002","OCCUPATION_CD_DESC":"BULLDOZER OPERATOR","MACHINE_CD":"03","MANUFACTURER_CD":"018","ACT_DOSE_85":"83","PEL_DOSE_90":"12","SURVEY_TYPE":"F","sourceDate":"2002-07-29"},{"SOURCE_ROW_NUMBER":"70155","EVENT_NO":"4232694","SURVEY_DATE":"07/29/2002","OCCUPATION_CD_DESC":"HIGHWALL DRILL OPERATOR","MACHINE_CD":"21","MANUFACTURER_CD":"053","ACT_DOSE_85":"126","PEL_DOSE_90":"89","SURVEY_TYPE":"F","sourceDate":"2002-07-29"},{"SOURCE_ROW_NUMBER":"70154","EVENT_NO":"4232694","SURVEY_DATE":"07/29/2002","OCCUPATION_CD_DESC":"HIGHLIFT OPERATOR/FRONT END LOADER","MACHINE_CD":"18","MANUFACTURER_CD":"018","ACT_DOSE_85":"6","PEL_DOSE_90":"1","SURVEY_TYPE":"F","sourceDate":"2002-07-29"},{"SOURCE_ROW_NUMBER":"70153","EVENT_NO":"4232693","SURVEY_DATE":"07/29/2002","OCCUPATION_CD_DESC":"REFUSE TRUCK DRIVER/BACKFILL TRUCK DRIVE","MACHINE_CD":"39","MANUFACTURER_CD":"018","ACT_DOSE_85":"39","PEL_DOSE_90":"13","SURVEY_TYPE":"F","sourceDate":"2002-07-29"},{"SOURCE_ROW_NUMBER":"70152","EVENT_NO":"4232693","SURVEY_DATE":"07/29/2002","OCCUPATION_CD_DESC":"REFUSE TRUCK DRIVER/BACKFILL TRUCK DRIVE","MACHINE_CD":"39","MANUFACTURER_CD":"018","ACT_DOSE_85":"53","PEL_DOSE_90":"6","SURVEY_TYPE":"F","sourceDate":"2002-07-29"},{"SOURCE_ROW_NUMBER":"70151","EVENT_NO":"4232693","SURVEY_DATE":"07/29/2002","OCCUPATION_CD_DESC":"HIGHLIFT OPERATOR/FRONT END LOADER","MACHINE_CD":"18","MANUFACTURER_CD":"018","ACT_DOSE_85":"0","PEL_DOSE_90":"0","SURVEY_TYPE":"F","sourceDate":"2002-07-29"},{"SOURCE_ROW_NUMBER":"70147","EVENT_NO":"4225582","SURVEY_DATE":"08/16/2001","OCCUPATION_CD_DESC":"BULLDOZER OPERATOR","MACHINE_CD":"03","MANUFACTURER_CD":"018","ACT_DOSE_85":"47","PEL_DOSE_90":"3","SURVEY_TYPE":"I","sourceDate":"2001-08-16"},{"SOURCE_ROW_NUMBER":"70146","EVENT_NO":"4225582","SURVEY_DATE":"08/16/2001","OCCUPATION_CD_DESC":"REFUSE TRUCK DRIVER/BACKFILL TRUCK DRIVE","MACHINE_CD":"39","MANUFACTURER_CD":"018","ACT_DOSE_85":"22","PEL_DOSE_90":"3","SURVEY_TYPE":"I","sourceDate":"2001-08-16"}]},{"id":"msha-quartz-samples","name":"Quartz Samples — Coal","domains":["health","safety"],"products":["quartz exposure trends","occupation context","applicable-rule linkage"],"rowCount":9,"firstDate":"2000-07-17","lastDate":"2002-03-14","metrics":{"recentRows":0,"voidSamples":3,"maxQuartzPct":34.7,"validSamples":6,"quartzPctTotal":100.3},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"38810","CASSETTE_NO":"50576289","SAMPLE_DT":"03/14/2002","OCC_CODE_DESC":"BULLDOZER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED WORK POSITION","VOID_CD_DESC":"INSUFFICIENT WEIGHT GAIN","sourceDate":"2002-03-14"},{"SOURCE_ROW_NUMBER":"96368","CASSETTE_NO":"50576311","SAMPLE_DT":"03/01/2002","OCC_CODE_DESC":"BULLDOZER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED WORK POSITION","VOID_CD_DESC":"INSUFFICIENT WEIGHT GAIN","sourceDate":"2002-03-01"},{"SOURCE_ROW_NUMBER":"87708","CASSETTE_NO":"50576349","SAMPLE_DT":"03/01/2002","QUARTZ_PCT":"09.1","OCC_CODE_DESC":"BULLDOZER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED WORK POSITION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2002-03-01"},{"SOURCE_ROW_NUMBER":"109217","CASSETTE_NO":"57404058","SAMPLE_DT":"01/29/2002","QUARTZ_PCT":"34.7","OCC_CODE_DESC":"BULLDOZER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED WORK POSITION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2002-01-29"},{"SOURCE_ROW_NUMBER":"78637","CASSETTE_NO":"57404130","SAMPLE_DT":"01/29/2002","QUARTZ_PCT":"27.0","OCC_CODE_DESC":"BULLDOZER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED WORK POSITION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2002-01-29"},{"SOURCE_ROW_NUMBER":"64649","CASSETTE_NO":"50576319","SAMPLE_DT":"09/07/2001","QUARTZ_PCT":"00.2","OCC_CODE_DESC":"HIGHWALL DRILL OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED WORK POSITION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2001-09-07"},{"SOURCE_ROW_NUMBER":"67475","CASSETTE_NO":"57369289","SAMPLE_DT":"08/08/2001","QUARTZ_PCT":"17.6","OCC_CODE_DESC":"HIGHWALL DRILL OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED WORK POSITION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2001-08-08"},{"SOURCE_ROW_NUMBER":"16541","CASSETTE_NO":"50082034","SAMPLE_DT":"08/08/2000","OCC_CODE_DESC":"REFUSE TRUCK DRIVER/BACKFILL TRUCK DRIVE","SAMPLE_TYPE_DESC":"DESIGNATED WORK POSITION","VOID_CD_DESC":"INSUFFICIENT WEIGHT GAIN","sourceDate":"2000-08-08"},{"SOURCE_ROW_NUMBER":"78003","CASSETTE_NO":"57300277","SAMPLE_DT":"07/17/2000","QUARTZ_PCT":"11.7","OCC_CODE_DESC":"REFUSE TRUCK DRIVER/BACKFILL TRUCK DRIVE","SAMPLE_TYPE_DESC":"DESIGNATED WORK POSITION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2000-07-17"}]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":33,"firstDate":"2000-02-23","lastDate":"2003-02-12","metrics":{"ss":24,"amountDue":4779,"contested":0,"amountPaid":4779,"recentRows":0,"section104d":0,"unterminated":0,"proposedPenalty":4779},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"964063","VIOLATION_NO":"7472258","VIOLATION_ISSUE_DT":"02/12/2003","SIG_SUB":"Y","PART_SECTION":"77.1605(d)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"02/13/2003","PROPOSED_PENALTY":"207","AMOUNT_DUE":"207","AMOUNT_PAID":"207","CONTESTED_IND":"N","sourceDate":"2003-02-12"},{"SOURCE_ROW_NUMBER":"964062","VIOLATION_NO":"7472257","VIOLATION_ISSUE_DT":"02/12/2003","SIG_SUB":"Y","PART_SECTION":"77.1605(d)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"02/13/2003","PROPOSED_PENALTY":"207","AMOUNT_DUE":"207","AMOUNT_PAID":"207","CONTESTED_IND":"N","sourceDate":"2003-02-12"},{"SOURCE_ROW_NUMBER":"964075","VIOLATION_NO":"7472444","VIOLATION_ISSUE_DT":"05/28/2002","SIG_SUB":"Y","PART_SECTION":"77.404(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/28/2002","PROPOSED_PENALTY":"196","AMOUNT_DUE":"196","AMOUNT_PAID":"196","CONTESTED_IND":"N","sourceDate":"2002-05-28"},{"SOURCE_ROW_NUMBER":"964074","VIOLATION_NO":"7472443","VIOLATION_ISSUE_DT":"05/28/2002","SIG_SUB":"Y","PART_SECTION":"77.404(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/28/2002","PROPOSED_PENALTY":"196","AMOUNT_DUE":"196","AMOUNT_PAID":"196","CONTESTED_IND":"N","sourceDate":"2002-05-28"},{"SOURCE_ROW_NUMBER":"964073","VIOLATION_NO":"7472442","VIOLATION_ISSUE_DT":"05/28/2002","SIG_SUB":"Y","PART_SECTION":"77.404(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/28/2002","PROPOSED_PENALTY":"196","AMOUNT_DUE":"196","AMOUNT_PAID":"196","CONTESTED_IND":"N","sourceDate":"2002-05-28"},{"SOURCE_ROW_NUMBER":"964072","VIOLATION_NO":"7472441","VIOLATION_ISSUE_DT":"05/23/2002","SIG_SUB":"N","PART_SECTION":"77.404(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/28/2002","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2002-05-23"},{"SOURCE_ROW_NUMBER":"964071","VIOLATION_NO":"7472440","VIOLATION_ISSUE_DT":"05/23/2002","SIG_SUB":"N","PART_SECTION":"77.404(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/28/2002","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2002-05-23"},{"SOURCE_ROW_NUMBER":"964070","VIOLATION_NO":"7472439","VIOLATION_ISSUE_DT":"05/21/2002","SIG_SUB":"Y","PART_SECTION":"77.1004(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Permanent","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/23/2002","PROPOSED_PENALTY":"259","AMOUNT_DUE":"259","AMOUNT_PAID":"259","CONTESTED_IND":"N","sourceDate":"2002-05-21"},{"SOURCE_ROW_NUMBER":"964061","VIOLATION_NO":"7472403","VIOLATION_ISSUE_DT":"01/29/2002","SIG_SUB":"Y","PART_SECTION":"77.404(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"01/31/2002","PROPOSED_PENALTY":"161","AMOUNT_DUE":"161","AMOUNT_PAID":"161","CONTESTED_IND":"N","sourceDate":"2002-01-29"},{"SOURCE_ROW_NUMBER":"964060","VIOLATION_NO":"7472402","VIOLATION_ISSUE_DT":"01/29/2002","SIG_SUB":"Y","PART_SECTION":"77.400(d)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Permanent","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"01/30/2002","PROPOSED_PENALTY":"207","AMOUNT_DUE":"207","AMOUNT_PAID":"207","CONTESTED_IND":"N","sourceDate":"2002-01-29"},{"SOURCE_ROW_NUMBER":"964059","VIOLATION_NO":"7472401","VIOLATION_ISSUE_DT":"01/29/2002","SIG_SUB":"Y","PART_SECTION":"77.404(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"01/30/2002","PROPOSED_PENALTY":"259","AMOUNT_DUE":"259","AMOUNT_PAID":"259","CONTESTED_IND":"N","sourceDate":"2002-01-29"},{"SOURCE_ROW_NUMBER":"964058","VIOLATION_NO":"7472400","VIOLATION_ISSUE_DT":"01/28/2002","SIG_SUB":"Y","PART_SECTION":"77.404(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"01/29/2002","PROPOSED_PENALTY":"161","AMOUNT_DUE":"161","AMOUNT_PAID":"161","CONTESTED_IND":"N","sourceDate":"2002-01-28"}]}],"safety":{"href":"/api/v1/mines/1518207/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/1518207/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 77.1605","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":2},{"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":8},{"chapter":"I","heading":"Ground control; inspection and maintenance; general.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-K/section-77.1004","part":"77","subchapter":"O","subpart":"K","id":"77.1004","citation":"30 CFR 77.1004","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","partHeading":"PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 77.400","heading":"Mechanical equipment guards.","id":"77.400","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.400","part":"77","partHeading":"PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"E","subpartHeading":"Subpart E—Safeguards for Mechanical Equipment","text":"(a) Gears; sprockets; chains; drive, head, tail, and takeup pulleys; flywheels; couplings; shafts; sawblades; fan inlets; and similar exposed moving machine parts which may be contacted by persons, and which may cause injury to persons shall be guarded.\n\n(b) Overhead belts shall be guarded if the whipping action from a broken line would be hazardous to persons below.\n\n(c) Guards at conveyor-drive, conveyor-head, and conveyor-tail pulleys shall extend a distance sufficient to prevent a person from reaching behind the guard and becoming caught between the belt and the pulley.\n\n(d) Except when testing the machinery, guards shall be securely in place while machinery is being operated.","occurrenceCount":1}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"1518207","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}