{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"4003280","name":"Columbia Quarry","status":"Abandoned","status_date":"2011-10-17","mine_type":"Surface","coal_metal":"M","commodity":"Crushed, Broken Limestone NEC","state":"TN","county":"Maury","nearest_town":"Columbia","operator_id":"L16168","operator_name":"Vulcan Constr. Materials, L.P.","controller_id":"0071891","controller_name":"Vulcan Materials Company","district":"M3","office":"Franklin TN Field Office","employees":0,"latitude":35.656666,"longitude":-87.026666},"coverage":{"contributingSources":12,"registeredSources":20,"sourceRows":119},"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":"4003280","name":"Columbia Quarry"},"operator":{"type":"operator","id":"L16168","name":"Vulcan Constr. Materials, L.P."},"controller":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00024","name":"Legacy Vulcan Corp (Form:Vulcan Materials Co)"},"object":{"type":"mine","id":"4003280","name":"Columbia Quarry"},"validFrom":"1950-01-01","validTo":"2007-11-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4003280|M00024|1950-01-01|2007-11-15"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16168","name":"Vulcan Constr. Materials, L.P."},"object":{"type":"mine","id":"4003280","name":"Columbia Quarry"},"validFrom":"2006-08-07","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4003280|L16168|2006-08-07|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00024","name":"Legacy Vulcan Corp (Form:Vulcan Materials Co)"},"object":{"type":"operator","id":"L16168","name":"Vulcan Constr. Materials, L.P."},"validFrom":"2006-08-07","validTo":"2007-11-15","current":false,"derived":true,"evidenceMineId":"4003280","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4003280|L16168|2006-08-07|M00024|1950-01-01|101896"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"object":{"type":"mine","id":"4003280","name":"Columbia Quarry"},"validFrom":"2007-11-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4003280|0071891|2007-11-16|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"object":{"type":"operator","id":"L16168","name":"Vulcan Constr. Materials, L.P."},"validFrom":"2007-11-16","validTo":null,"current":true,"derived":true,"evidenceMineId":"4003280","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4003280|L16168|2006-08-07|0071891|2007-11-16|10981"}}],"coverage":{"historyRecords":2,"edgeCount":5,"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":"2007-09-12","lastDate":"2010-11-05","metrics":{"daysLost":164,"injuries":2,"fatalities":0,"recentRows":0,"restrictedDays":0,"contractorRecords":1},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"123161","DOCUMENT_NO":"220103160020","ACCIDENT_DT":"11/05/2010","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"SLIP OR FALL OF PERSON","ACCIDENT_TYPE":"Fall from machine","OCCUPATION":"Welder (shop)","NO_INJURIES":"1","DAYS_LOST":"162","NARRATIVE":"Injured employee was accessing the operator's cab on a D9R dozer. As the employee opened the cab door, he stepped backwards missed step and fell onto the dozer's track below fracturing a vertebrae in his neck.","sourceDate":"2010-11-05"},{"SOURCE_ROW_NUMBER":"58795","DOCUMENT_NO":"220072640043","ACCIDENT_DT":"09/12/2007","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"EXPLODING VESSELS UNDER PRESSURE","ACCIDENT_TYPE":"Contact with hot objects or substances","OCCUPATION":"Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech","NO_INJURIES":"1","DAYS_LOST":"2","NARRATIVE":"Hose blew off the steamer @ heater coil. Employee was burned/scalded.","sourceDate":"2007-09-12"}]},{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"2011-10-17","lastDate":"2011-10-17","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":4,"firstDate":"2008-04-24","lastDate":"2010-10-06","metrics":{"ss":3,"delinquent":4,"recentRows":0,"paidPenalty":1103,"proposedPenalty":1103,"currentAssessment":1103},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"2083107","VIOLATION_NO":"8546897","ISSUE_DT":"10/06/2010","CFR_STANDARD_CD":"56.12004","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"162.00","CURRENT_ASSESSMENT_AMT":"162.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2010-10-06"},{"SOURCE_ROW_NUMBER":"314157","VIOLATION_NO":"6095939","ISSUE_DT":"07/07/2009","CFR_STANDARD_CD":"56.3131","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"634.00","CURRENT_ASSESSMENT_AMT":"634.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2009-07-07"},{"SOURCE_ROW_NUMBER":"277979","VIOLATION_NO":"7751514","ISSUE_DT":"04/24/2008","CFR_STANDARD_CD":"56.14100(b)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"207.00","CURRENT_ASSESSMENT_AMT":"207.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2008-04-24"},{"SOURCE_ROW_NUMBER":"277978","VIOLATION_NO":"7751513","ISSUE_DT":"04/24/2008","CFR_STANDARD_CD":"56.20003(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2008-04-24"}]},{"id":"msha-contractor-production-quarterly","name":"Contractor Employment and Production — Quarterly","domains":["contractors","production","safety"],"products":["contractor exposure denominator","productivity","presence windows"],"rowCount":10,"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":4,"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":"2006-08-07","lastDate":"2006-08-07","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":11,"firstDate":"2007-01-24","lastDate":"2011-08-16","metrics":{"inspectors":11,"recentRows":0,"onSiteHours":95,"inspectionHours":139.25,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"91151","EVENT_NO":"6522197","INSPECTION_BEGIN_DT":"08/16/2011","INSPECTION_END_DT":"08/24/2011","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"11.5","SUM_TOTAL_ON_SITE_HOURS":"6.75","sourceDate":"2011-08-16"},{"SOURCE_ROW_NUMBER":"990105","EVENT_NO":"6522141","INSPECTION_BEGIN_DT":"11/08/2010","INSPECTION_END_DT":"11/08/2010","ACTIVITY_CODE":"E07","ACTIVITY":"Non-Fatal Accident Investigation","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"9.75","SUM_TOTAL_ON_SITE_HOURS":"3.75","sourceDate":"2010-11-08"},{"SOURCE_ROW_NUMBER":"1023681","EVENT_NO":"6522137","INSPECTION_BEGIN_DT":"10/06/2010","INSPECTION_END_DT":"10/07/2010","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"13.75","SUM_TOTAL_ON_SITE_HOURS":"10.5","sourceDate":"2010-10-06"},{"SOURCE_ROW_NUMBER":"156579","EVENT_NO":"0932925","INSPECTION_BEGIN_DT":"07/12/2010","INSPECTION_END_DT":"07/13/2010","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8.5","SUM_TOTAL_ON_SITE_HOURS":"4","sourceDate":"2010-07-12"},{"SOURCE_ROW_NUMBER":"907764","EVENT_NO":"0932910","INSPECTION_BEGIN_DT":"03/23/2010","INSPECTION_END_DT":"03/25/2010","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"13","SUM_TOTAL_ON_SITE_HOURS":"10","sourceDate":"2010-03-23"},{"SOURCE_ROW_NUMBER":"128984","EVENT_NO":"0946416","INSPECTION_BEGIN_DT":"09/01/2009","INSPECTION_END_DT":"09/01/2009","ACTIVITY_CODE":"E15","ACTIVITY":"Compliance Follow-up Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"9","SUM_TOTAL_ON_SITE_HOURS":"8.25","sourceDate":"2009-09-01"},{"SOURCE_ROW_NUMBER":"891273","EVENT_NO":"0959923","INSPECTION_BEGIN_DT":"07/07/2009","INSPECTION_END_DT":"07/08/2009","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"20.5","SUM_TOTAL_ON_SITE_HOURS":"13","sourceDate":"2009-07-07"},{"SOURCE_ROW_NUMBER":"486408","EVENT_NO":"0942909","INSPECTION_BEGIN_DT":"03/12/2009","INSPECTION_END_DT":"03/12/2009","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"10","SUM_TOTAL_ON_SITE_HOURS":"6.25","sourceDate":"2009-03-12"},{"SOURCE_ROW_NUMBER":"573312","EVENT_NO":"0931975","INSPECTION_BEGIN_DT":"04/23/2008","INSPECTION_END_DT":"04/28/2008","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"15.75","SUM_TOTAL_ON_SITE_HOURS":"9","sourceDate":"2008-04-23"},{"SOURCE_ROW_NUMBER":"294698","EVENT_NO":"0931347","INSPECTION_BEGIN_DT":"11/05/2007","INSPECTION_END_DT":"11/08/2007","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"18","SUM_TOTAL_ON_SITE_HOURS":"16","sourceDate":"2007-11-05"},{"SOURCE_ROW_NUMBER":"414138","EVENT_NO":"0930756","INSPECTION_BEGIN_DT":"01/24/2007","INSPECTION_END_DT":"01/26/2007","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"9.5","SUM_TOTAL_ON_SITE_HOURS":"7.5","sourceDate":"2007-01-24"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":63,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2011-Q3":{"hours":3299,"employees":5,"production":0},"2011-Q2":{"hours":4861,"employees":6,"production":0},"2011-Q1":{"hours":1832,"employees":4,"production":0},"2010-Q4":{"hours":3777,"employees":11,"production":0},"2010-Q3":{"hours":3220,"employees":5,"production":0},"2010-Q2":{"hours":3421,"employees":5,"production":0},"2010-Q1":{"hours":4906,"employees":9,"production":0},"2009-Q4":{"hours":4703,"employees":10,"production":0},"2009-Q3":{"hours":3007,"employees":6,"production":0},"2009-Q2":{"hours":4197,"employees":5,"production":0},"2009-Q1":{"hours":2707,"employees":5,"production":0},"2008-Q4":{"hours":5474,"employees":9,"production":0}},"recentRecords":[]},{"id":"msha-mine-production-yearly","name":"Mine Employment and Production — Yearly","domains":["production","safety","compliance"],"products":["annual trend","backfill","quarterly reconciliation"],"rowCount":16,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2006":{"hours":150,"employees":2,"production":0},"2007":{"hours":31219,"employees":19,"production":0},"2008":{"hours":21156,"employees":11,"production":0},"2009":{"hours":14614,"employees":7,"production":0},"2010":{"hours":15324,"employees":8,"production":0},"2011":{"hours":9992,"employees":5,"production":0}},"recentRecords":[]},{"id":"msha-mines","name":"Mines","domains":["identity","production","logistics"],"products":["mine identity","status","commodity","location","operator and controller"],"rowCount":1,"firstDate":null,"lastDate":null,"metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-personal-health-samples","name":"Metal and Nonmetal Personal Health Samples","domains":["health","safety"],"products":["personal exposure trend","occupation patterns","analyte coverage"],"rowCount":1,"firstDate":"2009-09-01","lastDate":"2009-09-01","metrics":{"recentRows":0,"actionTaken":1,"maxExposureRatio":0,"overExposureLimit":0,"exposureRatioTotal":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"103359","EVENT_NO":"0946416","SAMPLE_NO":"000000200908500200","SAMPLE_DATE":"09/01/2009","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Front-end Loader Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2009-09-01"}]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":4,"firstDate":"2008-04-24","lastDate":"2010-10-06","metrics":{"ss":3,"amountDue":1103,"contested":0,"amountPaid":1103,"recentRows":0,"section104d":0,"unterminated":0,"proposedPenalty":1103},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"2082871","VIOLATION_NO":"8546897","VIOLATION_ISSUE_DT":"10/06/2010","SIG_SUB":"Y","PART_SECTION":"56.12004","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/06/2010","PROPOSED_PENALTY":"162","AMOUNT_DUE":"162","AMOUNT_PAID":"162","CONTESTED_IND":"N","sourceDate":"2010-10-06"},{"SOURCE_ROW_NUMBER":"2082870","VIOLATION_NO":"6095939","VIOLATION_ISSUE_DT":"07/07/2009","SIG_SUB":"Y","PART_SECTION":"56.3131","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"07/08/2009","PROPOSED_PENALTY":"634","AMOUNT_DUE":"634","AMOUNT_PAID":"634","CONTESTED_IND":"N","sourceDate":"2009-07-07"},{"SOURCE_ROW_NUMBER":"2082869","VIOLATION_NO":"7751514","VIOLATION_ISSUE_DT":"04/24/2008","SIG_SUB":"Y","PART_SECTION":"56.14100(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/01/2008","PROPOSED_PENALTY":"207","AMOUNT_DUE":"207","AMOUNT_PAID":"207","CONTESTED_IND":"N","sourceDate":"2008-04-24"},{"SOURCE_ROW_NUMBER":"2082868","VIOLATION_NO":"7751513","VIOLATION_ISSUE_DT":"04/24/2008","SIG_SUB":"N","PART_SECTION":"56.20003(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"04/24/2008","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2008-04-24"}]}],"safety":{"href":"/api/v1/mines/4003280/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4003280/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":"Electrical conductors.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004","part":"56","subchapter":"K","subpart":"K","id":"56.12004","citation":"30 CFR 56.12004","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","heading":"Pit or quarry wall perimeter.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-B/section-56.3131","part":"56","subchapter":"K","subpart":"B","id":"56.3131","citation":"30 CFR 56.3131","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","heading":"Safety defects; examination, correction and records.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100","part":"56","subchapter":"K","subpart":"M","id":"56.14100","citation":"30 CFR 56.14100","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","heading":"Housekeeping.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003","part":"56","subchapter":"K","subpart":"S","id":"56.20003","citation":"30 CFR 56.20003","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":1}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"4003280","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}