{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"3503513","name":"Oregon Belle Mine","status":"Abandoned","status_date":"2015-10-02","mine_type":"Underground","coal_metal":"M","commodity":"Gold Ore","state":"OR","county":"Jackson","nearest_town":"Jacksonville","operator_id":"0099126","operator_name":"Oregon Belle Holdings Inc","controller_id":"M13378","controller_name":"Linda Rose  Hata","district":"M7","office":"Albany OR Field Office","employees":0,"latitude":42.2925,"longitude":-123.101111},"coverage":{"contributingSources":11,"registeredSources":20,"sourceRows":240},"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":"3503513","name":"Oregon Belle Mine"},"operator":{"type":"operator","id":"0099126","name":"Oregon Belle Holdings Inc"},"controller":{"type":"controller","id":"M13378","name":"Linda Rose  Hata"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L17532","name":"Linda Rose Associates Inc"},"object":{"type":"mine","id":"3503513","name":"Oregon Belle Mine"},"validFrom":"2000-04-01","validTo":"2007-08-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503513|L17532|2000-04-01|2007-08-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M13378","name":"Linda Rose  Hata"},"object":{"type":"mine","id":"3503513","name":"Oregon Belle Mine"},"validFrom":"2000-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503513|M13378|2000-04-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M13378","name":"Linda Rose  Hata"},"object":{"type":"operator","id":"L17532","name":"Linda Rose Associates Inc"},"validFrom":"2000-04-01","validTo":"2007-08-31","current":false,"derived":true,"evidenceMineId":"3503513","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503513|L17532|2000-04-01|M13378|2000-04-01|156126"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0083745","name":"Linda R. Hata"},"object":{"type":"mine","id":"3503513","name":"Oregon Belle Mine"},"validFrom":"2007-09-01","validTo":"2008-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503513|0083745|2007-09-01|2008-05-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M13378","name":"Linda Rose  Hata"},"object":{"type":"mine","id":"3503513","name":"Oregon Belle Mine"},"validFrom":"2007-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503513|M13378|2007-09-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M13378","name":"Linda Rose  Hata"},"object":{"type":"operator","id":"0083745","name":"Linda R. Hata"},"validFrom":"2007-09-01","validTo":"2008-05-31","current":false,"derived":true,"evidenceMineId":"3503513","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503513|0083745|2007-09-01|M13378|2007-09-01|156127"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0092285","name":"Oregon Belle LLC"},"object":{"type":"mine","id":"3503513","name":"Oregon Belle Mine"},"validFrom":"2008-06-01","validTo":"2009-03-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503513|0092285|2008-06-01|2009-03-22"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M13378","name":"Linda Rose  Hata"},"object":{"type":"mine","id":"3503513","name":"Oregon Belle Mine"},"validFrom":"2008-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503513|M13378|2008-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M13378","name":"Linda Rose  Hata"},"object":{"type":"operator","id":"0092285","name":"Oregon Belle LLC"},"validFrom":"2008-06-01","validTo":"2009-03-22","current":false,"derived":true,"evidenceMineId":"3503513","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503513|0092285|2008-06-01|M13378|2008-06-01|156128"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0099126","name":"Oregon Belle Holdings Inc"},"object":{"type":"mine","id":"3503513","name":"Oregon Belle Mine"},"validFrom":"2009-03-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503513|0099126|2009-03-23|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M13378","name":"Linda Rose  Hata"},"object":{"type":"mine","id":"3503513","name":"Oregon Belle Mine"},"validFrom":"2009-03-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503513|M13378|2009-03-23|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M13378","name":"Linda Rose  Hata"},"object":{"type":"operator","id":"0099126","name":"Oregon Belle Holdings Inc"},"validFrom":"2009-03-23","validTo":null,"current":true,"derived":true,"evidenceMineId":"3503513","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503513|0099126|2009-03-23|M13378|2009-03-23|156129"}}],"coverage":{"historyRecords":4,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"sources":[{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"2015-10-02","lastDate":"2015-10-02","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":1,"firstDate":"2010-01-05","lastDate":"2010-01-05","metrics":{"ss":0,"delinquent":1,"recentRows":0,"paidPenalty":100,"proposedPenalty":100,"currentAssessment":100},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"614695","VIOLATION_NO":"6479906","ISSUE_DT":"01/05/2010","CFR_STANDARD_CD":"57.13015(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":"2010-01-05"}]},{"id":"msha-civil-penalty-dockets-decisions","name":"Civil Penalty Dockets and Decisions","domains":["compliance","legal"],"products":["docket lineage","decision outcomes","citation packet precedent"],"rowCount":1,"firstDate":"2012-11-14","lastDate":"2012-11-14","metrics":{"appeals":0,"decisions":1,"recentRows":0,"decisionPenalty":0,"originalPenalty":100},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"325717","VIOLATION_NO":"8604472","DOCKET_NO":"WEST 2012-938M","DECISION_DT":"11/14/2012","DECISION_TYPE_CODE_DESC":"Withdrawal","ORIGINAL_PENALTY_AMT":"100.00","DECISION_PENALTY_AMT":"0.00","JUDGE_FIRST_NAME":"L","JUDGE_LAST_NAME":"Gill","sourceDate":"2012-11-14"}]},{"id":"msha-contested-violations","name":"Contested Violations","domains":["compliance","legal"],"products":["contest status","time to resolution","contested-rate context"],"rowCount":1,"firstDate":"2012-03-26","lastDate":"2012-03-26","metrics":{"decisions":1,"ssChanged":1,"recentRows":0,"decisionPenalty":0,"proposedPenalty":100},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"83373","CITATION_NO":"8604472","CITATION_ISSUE_DT":"03/26/2012","DOCKET_NO":"WEST 2012-938M","DECISION_DT":"11/14/2012","CFR_STANDARD_CODE":"57.1000","ORIGINAL_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"100.00","DECISION_PENALTY_AMT":".00","sourceDate":"2012-03-26"}]},{"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":"2000-04-01","lastDate":"2009-03-23","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":3},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":26,"firstDate":"2000-11-21","lastDate":"2014-11-17","metrics":{"inspectors":32,"recentRows":0,"onSiteHours":191,"inspectionHours":440.5,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"800794","EVENT_NO":"6598372","INSPECTION_BEGIN_DT":"11/17/2014","INSPECTION_END_DT":"11/18/2014","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"9.5","SUM_TOTAL_ON_SITE_HOURS":"1.5","sourceDate":"2014-11-17"},{"SOURCE_ROW_NUMBER":"174807","EVENT_NO":"1156450","INSPECTION_BEGIN_DT":"05/22/2012","INSPECTION_END_DT":"05/22/2012","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"9","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2012-05-22"},{"SOURCE_ROW_NUMBER":"297076","EVENT_NO":"1145381","INSPECTION_BEGIN_DT":"03/21/2012","INSPECTION_END_DT":"03/26/2012","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8.5","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2012-03-21"},{"SOURCE_ROW_NUMBER":"999919","EVENT_NO":"1156413","INSPECTION_BEGIN_DT":"08/30/2011","INSPECTION_END_DT":"08/30/2011","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8.75","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2011-08-30"},{"SOURCE_ROW_NUMBER":"693897","EVENT_NO":"1156231","INSPECTION_BEGIN_DT":"01/11/2011","INSPECTION_END_DT":"01/11/2011","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"9.75","SUM_TOTAL_ON_SITE_HOURS":".25","sourceDate":"2011-01-11"},{"SOURCE_ROW_NUMBER":"146532","EVENT_NO":"1145999","INSPECTION_BEGIN_DT":"01/05/2010","INSPECTION_END_DT":"01/12/2010","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"47.5","SUM_TOTAL_ON_SITE_HOURS":"20.5","sourceDate":"2010-01-05"},{"SOURCE_ROW_NUMBER":"1117247","EVENT_NO":"1145772","INSPECTION_BEGIN_DT":"08/14/2009","INSPECTION_END_DT":"08/14/2009","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"11.5","SUM_TOTAL_ON_SITE_HOURS":"4.5","sourceDate":"2009-08-14"},{"SOURCE_ROW_NUMBER":"274719","EVENT_NO":"1145711","INSPECTION_BEGIN_DT":"10/15/2008","INSPECTION_END_DT":"10/16/2008","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"16.5","SUM_TOTAL_ON_SITE_HOURS":"7.5","sourceDate":"2008-10-15"},{"SOURCE_ROW_NUMBER":"1065278","EVENT_NO":"1145003","INSPECTION_BEGIN_DT":"06/02/2008","INSPECTION_END_DT":"06/04/2008","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"21","SUM_TOTAL_ON_SITE_HOURS":"8.5","sourceDate":"2008-06-02"},{"SOURCE_ROW_NUMBER":"990758","EVENT_NO":"1130944","INSPECTION_BEGIN_DT":"11/06/2007","INSPECTION_END_DT":"11/08/2007","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"26","SUM_TOTAL_ON_SITE_HOURS":"10","sourceDate":"2007-11-06"},{"SOURCE_ROW_NUMBER":"46493","EVENT_NO":"1130915","INSPECTION_BEGIN_DT":"05/15/2007","INSPECTION_END_DT":"05/16/2007","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"49","SUM_TOTAL_ON_SITE_HOURS":"15","sourceDate":"2007-05-15"},{"SOURCE_ROW_NUMBER":"831037","EVENT_NO":"1130461","INSPECTION_BEGIN_DT":"11/07/2006","INSPECTION_END_DT":"11/07/2006","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"12.75","SUM_TOTAL_ON_SITE_HOURS":"5","sourceDate":"2006-11-07"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":162,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2015-Q2":{"hours":48,"employees":2,"production":0},"2015-Q1":{"hours":41,"employees":2,"production":0},"2014-Q4":{"hours":49,"employees":2,"production":0},"2014-Q3":{"hours":24,"employees":2,"production":0},"2014-Q2":{"hours":43,"employees":2,"production":0},"2014-Q1":{"hours":75,"employees":3,"production":0},"2013-Q4":{"hours":35,"employees":2,"production":0},"2013-Q3":{"hours":27,"employees":2,"production":0},"2013-Q2":{"hours":40,"employees":2,"production":0},"2013-Q1":{"hours":75,"employees":2,"production":0},"2012-Q4":{"hours":47,"employees":2,"production":0},"2012-Q3":{"hours":28,"employees":2,"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":36,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2006":{"hours":3403,"employees":4,"production":0},"2007":{"hours":1800,"employees":3,"production":0},"2008":{"hours":3502,"employees":7,"production":0},"2009":{"hours":3532,"employees":9,"production":0},"2010":{"hours":1153,"employees":8,"production":0},"2011":{"hours":1510,"employees":3,"production":0},"2012":{"hours":383,"employees":2,"production":0},"2013":{"hours":177,"employees":2,"production":0},"2014":{"hours":191,"employees":2,"production":0},"2015":{"hours":89,"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-personal-health-samples","name":"Metal and Nonmetal Personal Health Samples","domains":["health","safety"],"products":["personal exposure trend","occupation patterns","analyte coverage"],"rowCount":6,"firstDate":"2004-03-17","lastDate":"2010-01-06","metrics":{"recentRows":0,"actionTaken":6,"maxExposureRatio":0.39,"overExposureLimit":0,"exposureRatioTotal":0.58},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"107147","EVENT_NO":"1145999","SAMPLE_NO":"000000201000663600","SAMPLE_DATE":"01/06/2010","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":"0000.20","EXPOSURE_LIMIT":"0001.03","C_OVER_E":"00.19","JOB_CD_DESC":"Utility Man","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2010-01-06"},{"SOURCE_ROW_NUMBER":"107146","EVENT_NO":"1145999","SAMPLE_NO":"000000201000663500","SAMPLE_DATE":"01/06/2010","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":"0000.15","EXPOSURE_LIMIT":"0000.38","C_OVER_E":"00.39","JOB_CD_DESC":"Utility Man","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2010-01-06"},{"SOURCE_ROW_NUMBER":"107145","EVENT_NO":"1145999","SAMPLE_NO":"000000201000663400","SAMPLE_DATE":"01/06/2010","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Utility Man","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2010-01-06"},{"SOURCE_ROW_NUMBER":"35473","EVENT_NO":"1115550","SAMPLE_NO":"000000200402430800","SAMPLE_DATE":"03/17/2004","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Miner, Stope","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2004-03-17"},{"SOURCE_ROW_NUMBER":"35472","EVENT_NO":"1115550","SAMPLE_NO":"000000200402430700","SAMPLE_DATE":"03/17/2004","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Miner, Stope","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2004-03-17"},{"SOURCE_ROW_NUMBER":"35471","EVENT_NO":"1115550","SAMPLE_NO":"000000200402430600","SAMPLE_DATE":"03/17/2004","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Miner, Stope","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2004-03-17"}]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":1,"firstDate":"2010-01-05","lastDate":"2010-01-05","metrics":{"ss":0,"amountDue":100,"contested":0,"amountPaid":100,"recentRows":0,"section104d":0,"unterminated":0,"proposedPenalty":100},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1831090","VIOLATION_NO":"6479906","VIOLATION_ISSUE_DT":"01/05/2010","SIG_SUB":"N","PART_SECTION":"57.13015(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Permanent","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"01/07/2010","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2010-01-05"}]}],"safety":{"href":"/api/v1/mines/3503513/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/3503513/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":"Inspection of compressed-air receivers and other unfired pressure vessels.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-L/section-57.13015","part":"57","subchapter":"K","subpart":"L","id":"57.13015","citation":"30 CFR 57.13015","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":1}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"3503513","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}