{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-17T06:17:15.228Z","identity":{"mine_id":"4609391","name":"Marianna No. 1 Mine","status":"NonProducing","status_date":"2011-05-23","mine_type":"Underground","coal_metal":"C","commodity":"Coal (Bituminous)","state":"WV","county":"Wyoming","nearest_town":"Pineville","operator_id":"P23835","operator_name":"Spartan Mining Company, LLC","controller_id":"0127321","controller_name":"Alpha Metallurgical Resources Inc","district":"C04","office":"Logan WV Field Office","employees":0,"latitude":37.588333,"longitude":-81.6125},"coverage":{"contributingSources":10,"registeredSources":20,"sourceRows":615},"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":"4609391","name":"Marianna No. 1 Mine"},"operator":{"type":"operator","id":"P23835","name":"Spartan Mining Company, LLC"},"controller":{"type":"controller","id":"0127321","name":"Alpha Metallurgical Resources Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02508","name":"Massey Energy Company"},"object":{"type":"mine","id":"4609391","name":"Marianna No. 1 Mine"},"validFrom":"1996-02-05","validTo":"2011-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4609391|C02508|1996-02-05|2011-05-31"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23835","name":"Spartan Mining Company, LLC"},"object":{"type":"mine","id":"4609391","name":"Marianna No. 1 Mine"},"validFrom":"2011-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4609391|P23835|2011-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02508","name":"Massey Energy Company"},"object":{"type":"operator","id":"P23835","name":"Spartan Mining Company, LLC"},"validFrom":"2011-01-01","validTo":"2011-05-31","current":false,"derived":true,"evidenceMineId":"4609391","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4609391|P23835|2011-01-01|C02508|1996-02-05|59467"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0041211","name":"Alpha Natural Resources, Inc."},"object":{"type":"mine","id":"4609391","name":"Marianna No. 1 Mine"},"validFrom":"2011-06-01","validTo":"2016-07-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4609391|0041211|2011-06-01|2016-07-25"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0041211","name":"Alpha Natural Resources, Inc."},"object":{"type":"operator","id":"P23835","name":"Spartan Mining Company, LLC"},"validFrom":"2011-06-01","validTo":"2016-07-25","current":false,"derived":true,"evidenceMineId":"4609391","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4609391|P23835|2011-01-01|0041211|2011-06-01|2222"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0127923","name":"Alpha Natural Resources Holdings, Inc"},"object":{"type":"mine","id":"4609391","name":"Marianna No. 1 Mine"},"validFrom":"2016-07-26","validTo":"2018-11-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4609391|0127923|2016-07-26|2018-11-08"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0127923","name":"Alpha Natural Resources Holdings, Inc"},"object":{"type":"operator","id":"P23835","name":"Spartan Mining Company, LLC"},"validFrom":"2016-07-26","validTo":"2018-11-08","current":false,"derived":true,"evidenceMineId":"4609391","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4609391|P23835|2011-01-01|0127923|2016-07-26|25326"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0127321","name":"Alpha Metallurgical Resources Inc"},"object":{"type":"mine","id":"4609391","name":"Marianna No. 1 Mine"},"validFrom":"2018-11-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4609391|0127321|2018-11-09|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0127321","name":"Alpha Metallurgical Resources Inc"},"object":{"type":"operator","id":"P23835","name":"Spartan Mining Company, LLC"},"validFrom":"2018-11-09","validTo":null,"current":true,"derived":true,"evidenceMineId":"4609391","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4609391|P23835|2011-01-01|0127321|2018-11-09|24961"}}],"coverage":{"historyRecords":4,"edgeCount":9,"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":1,"firstDate":"2012-02-02","lastDate":"2012-02-02","metrics":{"daysLost":0,"injuries":1,"fatalities":0,"recentRows":0,"restrictedDays":3,"contractorRecords":1},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"21285","DOCUMENT_NO":"220120450005","ACCIDENT_DT":"02/02/2012","DEGREE_INJURY":"DAYS RESTRICTED ACTIVITY ONLY","CLASSIFICATION":"SLIP OR FALL OF PERSON","ACCIDENT_TYPE":"Fall to the walkway or working surface","OCCUPATION":"Assayer, Geologist, Metallurgist, Engineer, Engineer management","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"Employee was walking into pump house and slipped and fell on left knee.","sourceDate":"2012-02-02"}]},{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"2011-05-23","lastDate":"2011-05-23","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":6,"firstDate":"2011-10-12","lastDate":"2017-01-09","metrics":{"ss":2,"delinquent":4,"recentRows":0,"paidPenalty":1033,"proposedPenalty":1033,"currentAssessment":1033},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1871427","VIOLATION_NO":"9066698","ISSUE_DT":"01/09/2017","CFR_STANDARD_CD":"77.502","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"116.00","CURRENT_ASSESSMENT_AMT":"116.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2017-01-09"},{"SOURCE_ROW_NUMBER":"1871426","VIOLATION_NO":"9066697","ISSUE_DT":"01/09/2017","CFR_STANDARD_CD":"77.800-2","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"116.00","CURRENT_ASSESSMENT_AMT":"116.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2017-01-09"},{"SOURCE_ROW_NUMBER":"1853319","VIOLATION_NO":"9020424","ISSUE_DT":"10/02/2014","CFR_STANDARD_CD":"77.502","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2014-10-02"},{"SOURCE_ROW_NUMBER":"1841193","VIOLATION_NO":"7256360","ISSUE_DT":"02/27/2013","CFR_STANDARD_CD":"75.312(e)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2013-02-27"},{"SOURCE_ROW_NUMBER":"1790593","VIOLATION_NO":"8106378","ISSUE_DT":"10/12/2011","CFR_STANDARD_CD":"77.1000","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"176.00","CURRENT_ASSESSMENT_AMT":"176.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2011-10-12"},{"SOURCE_ROW_NUMBER":"1790592","VIOLATION_NO":"8106377","ISSUE_DT":"10/12/2011","CFR_STANDARD_CD":"77.1000","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"425.00","CURRENT_ASSESSMENT_AMT":"425.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2011-10-12"}]},{"id":"msha-contractor-production-quarterly","name":"Contractor Employment and Production — Quarterly","domains":["contractors","production","safety"],"products":["contractor exposure denominator","productivity","presence windows"],"rowCount":437,"firstDate":null,"lastDate":null,"metrics":{"linkedContractors":2,"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":80,"firstDate":null,"lastDate":null,"metrics":{"linkedContractors":2,"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":4,"firstDate":"2011-01-01","lastDate":"2011-01-01","metrics":{"recentRows":0,"currentOperatorTenures":4,"completedOperatorTenures":0},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":71,"firstDate":"2011-05-24","lastDate":"2026-07-21","metrics":{"inspectors":76,"recentRows":24,"onSiteHours":207.25,"inspectionHours":486.75,"inspectionSamples":14},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"532639","EVENT_NO":"F00EB06","INSPECTION_BEGIN_DT":"07/21/2026","INSPECTION_END_DT":"07/21/2026","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8","SUM_TOTAL_ON_SITE_HOURS":"5","sourceDate":"2026-07-21"},{"SOURCE_ROW_NUMBER":"546731","EVENT_NO":"F02603D","INSPECTION_BEGIN_DT":"05/11/2026","INSPECTION_END_DT":"05/11/2026","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2026-05-11"},{"SOURCE_ROW_NUMBER":"868141","EVENT_NO":"F01018F","INSPECTION_BEGIN_DT":"03/05/2026","INSPECTION_END_DT":"03/05/2026","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.5","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2026-03-05"},{"SOURCE_ROW_NUMBER":"429325","EVENT_NO":"F01D4D8","INSPECTION_BEGIN_DT":"10/09/2025","INSPECTION_END_DT":"10/09/2025","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2025-10-09"},{"SOURCE_ROW_NUMBER":"473725","EVENT_NO":"F026031","INSPECTION_BEGIN_DT":"07/03/2025","INSPECTION_END_DT":"07/03/2025","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"2","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2025-07-03"},{"SOURCE_ROW_NUMBER":"777270","EVENT_NO":"7049212","INSPECTION_BEGIN_DT":"04/10/2025","INSPECTION_END_DT":"04/10/2025","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.5","SUM_TOTAL_ON_SITE_HOURS":"1.5","sourceDate":"2025-04-10"},{"SOURCE_ROW_NUMBER":"554422","EVENT_NO":"7049202","INSPECTION_BEGIN_DT":"01/29/2025","INSPECTION_END_DT":"01/29/2025","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.75","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2025-01-29"},{"SOURCE_ROW_NUMBER":"628124","EVENT_NO":"7049194","INSPECTION_BEGIN_DT":"10/10/2024","INSPECTION_END_DT":"10/10/2024","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"1.25","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2024-10-10"},{"SOURCE_ROW_NUMBER":"879632","EVENT_NO":"7049284","INSPECTION_BEGIN_DT":"07/10/2024","INSPECTION_END_DT":"07/10/2024","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3.5","SUM_TOTAL_ON_SITE_HOURS":"1.5","sourceDate":"2024-07-10"},{"SOURCE_ROW_NUMBER":"223887","EVENT_NO":"F008195","INSPECTION_BEGIN_DT":"04/01/2024","INSPECTION_END_DT":"04/01/2024","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2024-04-01"},{"SOURCE_ROW_NUMBER":"888578","EVENT_NO":"6306695","INSPECTION_BEGIN_DT":"01/11/2024","INSPECTION_END_DT":"01/11/2024","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2024-01-11"},{"SOURCE_ROW_NUMBER":"364395","EVENT_NO":"7048172","INSPECTION_BEGIN_DT":"10/10/2023","INSPECTION_END_DT":"10/10/2023","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2023-10-10"}]},{"id":"msha-mine-production-yearly","name":"Mine Employment and Production — Yearly","domains":["production","safety","compliance"],"products":["annual trend","backfill","quarterly reconciliation"],"rowCount":8,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2011":{"hours":3811,"employees":12,"production":0},"2012":{"hours":2646,"employees":4,"production":0},"2013":{"hours":72,"employees":1,"production":0},"2014":{"hours":48,"employees":2,"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-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":6,"firstDate":"2011-10-12","lastDate":"2017-01-09","metrics":{"ss":2,"amountDue":1033,"contested":0,"amountPaid":1033,"recentRows":0,"section104d":0,"unterminated":0,"proposedPenalty":1033},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"2963730","VIOLATION_NO":"9066698","VIOLATION_ISSUE_DT":"01/09/2017","SIG_SUB":"N","PART_SECTION":"77.502","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"01/10/2017","PROPOSED_PENALTY":"116","AMOUNT_DUE":"116","AMOUNT_PAID":"116","CONTESTED_IND":"N","sourceDate":"2017-01-09"},{"SOURCE_ROW_NUMBER":"2963729","VIOLATION_NO":"9066697","VIOLATION_ISSUE_DT":"01/09/2017","SIG_SUB":"N","PART_SECTION":"77.800-2","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"01/10/2017","PROPOSED_PENALTY":"116","AMOUNT_DUE":"116","AMOUNT_PAID":"116","CONTESTED_IND":"N","sourceDate":"2017-01-09"},{"SOURCE_ROW_NUMBER":"2963732","VIOLATION_NO":"9020424","VIOLATION_ISSUE_DT":"10/02/2014","SIG_SUB":"N","PART_SECTION":"77.502","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/07/2014","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2014-10-02"},{"SOURCE_ROW_NUMBER":"2963731","VIOLATION_NO":"7256360","VIOLATION_ISSUE_DT":"02/27/2013","SIG_SUB":"N","PART_SECTION":"75.312(e)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"02/27/2013","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2013-02-27"},{"SOURCE_ROW_NUMBER":"2963734","VIOLATION_NO":"8106378","VIOLATION_ISSUE_DT":"10/12/2011","SIG_SUB":"Y","PART_SECTION":"77.1000","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/19/2011","PROPOSED_PENALTY":"176","AMOUNT_DUE":"176","AMOUNT_PAID":"176","CONTESTED_IND":"N","sourceDate":"2011-10-12"},{"SOURCE_ROW_NUMBER":"2963733","VIOLATION_NO":"8106377","VIOLATION_ISSUE_DT":"10/12/2011","SIG_SUB":"Y","PART_SECTION":"77.1000","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/19/2011","PROPOSED_PENALTY":"425","AMOUNT_DUE":"425","AMOUNT_PAID":"425","CONTESTED_IND":"N","sourceDate":"2011-10-12"}]}],"safety":{"href":"/api/v1/mines/4609391/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4609391/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 77.502","heading":"Electric equipment; examination, testing, and maintenance.","id":"77.502","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.502","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":"F","subpartHeading":"Subpart F—Electrical Equipment—General","text":"Electric equipment shall be frequently examined, tested, and properly maintained by a qualified person to assure safe operating conditions. When a potentially dangerous condition is found on electric equipment, such equipment shall be removed from service until such condition is corrected. A record of such examinations shall be kept.","occurrenceCount":2},{"chapter":"I","heading":"Testing, examination, and maintenance of circuit breakers; record.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-I/section-77.800-2","part":"77","subchapter":"O","subpart":"I","id":"77.800-2","citation":"30 CFR 77.800-2","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","partHeading":"PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","heading":"Main mine fan examinations and records.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.312","part":"75","subchapter":"O","subpart":"D","id":"75.312","citation":"30 CFR 75.312","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","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":2}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"4609391","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873}}