{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"1103167","name":"Plant 1","status":"Abandoned","status_date":"2011-09-14","mine_type":"Surface","coal_metal":"M","commodity":"Crushed, Broken Limestone NEC","state":"IL","county":"Winnebago","nearest_town":"Rockford","operator_id":"0089004","operator_name":"Rubloff Excavation, LLC","controller_id":"0060669","controller_name":"Ron E  Swenson; Mark A  Robinson","district":"M4","office":"Duluth District","employees":0,"latitude":42.165555,"longitude":-89.042222},"coverage":{"contributingSources":8,"registeredSources":20,"sourceRows":59},"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":"1103167","name":"Plant 1"},"operator":{"type":"operator","id":"0089004","name":"Rubloff Excavation, LLC"},"controller":{"type":"controller","id":"0060669","name":"Ron E  Swenson; Mark A  Robinson"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0072443","name":"Rock River Stone LLC"},"object":{"type":"mine","id":"1103167","name":"Plant 1"},"validFrom":"2006-06-05","validTo":"2007-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1103167|0072443|2006-06-05|2007-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0060669","name":"Mark A  Robinson et al"},"object":{"type":"mine","id":"1103167","name":"Plant 1"},"validFrom":"2006-06-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1103167|0060669|2006-06-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0060669","name":"Mark A  Robinson et al"},"object":{"type":"operator","id":"0072443","name":"Rock River Stone LLC"},"validFrom":"2006-06-05","validTo":"2007-12-31","current":false,"derived":true,"evidenceMineId":"1103167","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1103167|0072443|2006-06-05|0060669|2006-06-05|8082"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0060669","name":"Ron E  Swenson et al"},"object":{"type":"operator","id":"0072443","name":"Rock River Stone LLC"},"validFrom":"2006-06-05","validTo":"2007-12-31","current":false,"derived":true,"evidenceMineId":"1103167","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1103167|0072443|2006-06-05|0060669|2006-06-05|8083"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0089004","name":"Rubloff Excavation, LLC"},"object":{"type":"mine","id":"1103167","name":"Plant 1"},"validFrom":"2008-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1103167|0089004|2008-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0060669","name":"Mark A  Robinson et al"},"object":{"type":"mine","id":"1103167","name":"Plant 1"},"validFrom":"2008-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1103167|0060669|2008-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0060669","name":"Mark A  Robinson et al"},"object":{"type":"operator","id":"0089004","name":"Rubloff Excavation, LLC"},"validFrom":"2008-01-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1103167","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1103167|0089004|2008-01-01|0060669|2008-01-01|8084"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0060669","name":"Ron E  Swenson et al"},"object":{"type":"operator","id":"0089004","name":"Rubloff Excavation, LLC"},"validFrom":"2008-01-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1103167","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1103167|0089004|2008-01-01|0060669|2008-01-01|8085"}}],"coverage":{"historyRecords":4,"edgeCount":8,"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":"2011-09-14","lastDate":"2011-09-14","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":5,"firstDate":"2007-08-28","lastDate":"2008-11-06","metrics":{"ss":0,"delinquent":4,"recentRows":0,"paidPenalty":500,"proposedPenalty":500,"currentAssessment":500},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"383819","VIOLATION_NO":"6186355","ISSUE_DT":"11/06/2008","CFR_STANDARD_CD":"56.12028","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2008-11-06"},{"SOURCE_ROW_NUMBER":"383818","VIOLATION_NO":"6186354","ISSUE_DT":"11/06/2008","CFR_STANDARD_CD":"56.1000","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2008-11-06"},{"SOURCE_ROW_NUMBER":"383817","VIOLATION_NO":"6186353","ISSUE_DT":"11/05/2008","CFR_STANDARD_CD":"50.30(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":"2008-11-05"},{"SOURCE_ROW_NUMBER":"364675","VIOLATION_NO":"6185505","ISSUE_DT":"01/28/2008","CFR_STANDARD_CD":"56.14112(b)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2008-01-28"},{"SOURCE_ROW_NUMBER":"364925","VIOLATION_NO":"6186712","ISSUE_DT":"08/28/2007","CFR_STANDARD_CD":"56.4101","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2007-08-28"}]},{"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":"2006-06-05","lastDate":"2008-01-01","metrics":{"recentRows":0,"currentOperatorTenures":2,"completedOperatorTenures":2},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":12,"firstDate":"2006-07-17","lastDate":"2011-09-13","metrics":{"inspectors":12,"recentRows":0,"onSiteHours":26,"inspectionHours":74.75,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"567301","EVENT_NO":"6572329","INSPECTION_BEGIN_DT":"09/13/2011","INSPECTION_END_DT":"09/13/2011","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.25","SUM_TOTAL_ON_SITE_HOURS":"0","sourceDate":"2011-09-13"},{"SOURCE_ROW_NUMBER":"160370","EVENT_NO":"6572120","INSPECTION_BEGIN_DT":"06/01/2011","INSPECTION_END_DT":"06/01/2011","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.5","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2011-06-01"},{"SOURCE_ROW_NUMBER":"1127991","EVENT_NO":"6518947","INSPECTION_BEGIN_DT":"08/10/2010","INSPECTION_END_DT":"08/10/2010","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.25","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2010-08-10"},{"SOURCE_ROW_NUMBER":"597040","EVENT_NO":"6518903","INSPECTION_BEGIN_DT":"04/27/2010","INSPECTION_END_DT":"04/27/2010","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.25","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2010-04-27"},{"SOURCE_ROW_NUMBER":"971444","EVENT_NO":"6511927","INSPECTION_BEGIN_DT":"07/09/2009","INSPECTION_END_DT":"07/09/2009","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2","SUM_TOTAL_ON_SITE_HOURS":"1.5","sourceDate":"2009-07-09"},{"SOURCE_ROW_NUMBER":"593272","EVENT_NO":"1011132","INSPECTION_BEGIN_DT":"11/12/2008","INSPECTION_END_DT":"12/29/2008","ACTIVITY_CODE":"E15","ACTIVITY":"Compliance Follow-up Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"7","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2008-11-12"},{"SOURCE_ROW_NUMBER":"676488","EVENT_NO":"1011131","INSPECTION_BEGIN_DT":"11/05/2008","INSPECTION_END_DT":"11/06/2008","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"15.5","SUM_TOTAL_ON_SITE_HOURS":"3.5","sourceDate":"2008-11-05"},{"SOURCE_ROW_NUMBER":"28546","EVENT_NO":"1001432","INSPECTION_BEGIN_DT":"04/22/2008","INSPECTION_END_DT":"04/24/2008","ACTIVITY_CODE":"E04","ACTIVITY":"Verbal Hazard Complaint Inspections","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"15.25","SUM_TOTAL_ON_SITE_HOURS":"7","sourceDate":"2008-04-22"},{"SOURCE_ROW_NUMBER":"777331","EVENT_NO":"1001047","INSPECTION_BEGIN_DT":"01/28/2008","INSPECTION_END_DT":"01/29/2008","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"12","SUM_TOTAL_ON_SITE_HOURS":"7","sourceDate":"2008-01-28"},{"SOURCE_ROW_NUMBER":"706117","EVENT_NO":"1001285","INSPECTION_BEGIN_DT":"08/28/2007","INSPECTION_END_DT":"08/29/2007","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"5.75","SUM_TOTAL_ON_SITE_HOURS":"4.25","sourceDate":"2007-08-28"},{"SOURCE_ROW_NUMBER":"370223","EVENT_NO":"0999772","INSPECTION_BEGIN_DT":"07/09/2007","INSPECTION_END_DT":"07/10/2007","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":".25","sourceDate":"2007-07-09"},{"SOURCE_ROW_NUMBER":"666668","EVENT_NO":"0999594","INSPECTION_BEGIN_DT":"07/17/2006","INSPECTION_END_DT":"07/17/2006","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":"0","sourceDate":"2006-07-17"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":23,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2010-Q3":{"hours":1,"employees":1,"production":0},"2010-Q2":{"hours":3,"employees":2,"production":0},"2010-Q1":{"hours":1,"employees":1,"production":0},"2009-Q4":{"hours":1,"employees":1,"production":0},"2009-Q3":{"hours":13,"employees":2,"production":0},"2009-Q2":{"hours":166,"employees":7,"production":0},"2009-Q1":{"hours":65,"employees":2,"production":0},"2008-Q4":{"hours":1509,"employees":7,"production":0},"2008-Q3":{"hours":1927,"employees":7,"production":0},"2007-Q4":{"hours":4423,"employees":8,"production":0},"2007-Q3":{"hours":2531,"employees":4,"production":0},"2007-Q2":{"hours":310,"employees":1,"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":8,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2006":{"hours":510,"employees":2,"production":0},"2007":{"hours":7318,"employees":4,"production":0},"2008":{"hours":3436,"employees":8,"production":0},"2009":{"hours":245,"employees":4,"production":0},"2010":{"hours":5,"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":5,"firstDate":"2007-08-28","lastDate":"2008-11-06","metrics":{"ss":0,"amountDue":500,"contested":0,"amountPaid":500,"recentRows":0,"section104d":0,"unterminated":0,"proposedPenalty":500},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"546355","VIOLATION_NO":"6186355","VIOLATION_ISSUE_DT":"11/06/2008","SIG_SUB":"N","PART_SECTION":"56.12028","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"11/14/2008","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2008-11-06"},{"SOURCE_ROW_NUMBER":"546354","VIOLATION_NO":"6186354","VIOLATION_ISSUE_DT":"11/06/2008","SIG_SUB":"N","PART_SECTION":"56.1000","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"11/06/2008","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2008-11-06"},{"SOURCE_ROW_NUMBER":"546353","VIOLATION_NO":"6186353","VIOLATION_ISSUE_DT":"11/05/2008","SIG_SUB":"N","PART_SECTION":"50.30(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"11/06/2008","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2008-11-05"},{"SOURCE_ROW_NUMBER":"546351","VIOLATION_NO":"6185505","VIOLATION_ISSUE_DT":"01/28/2008","SIG_SUB":"N","PART_SECTION":"56.14112(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Permanent","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"01/28/2008","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2008-01-28"},{"SOURCE_ROW_NUMBER":"546352","VIOLATION_NO":"6186712","VIOLATION_ISSUE_DT":"08/28/2007","SIG_SUB":"N","PART_SECTION":"56.4101","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"08/29/2007","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2007-08-28"}]}],"safety":{"href":"/api/v1/mines/1103167/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/1103167/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":"Testing grounding systems.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028","part":"56","subchapter":"K","subpart":"K","id":"56.12028","citation":"30 CFR 56.12028","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":"Notification of commencement of operations and closing of mines.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-A/section-56.1000","part":"56","subchapter":"K","subpart":"A","id":"56.1000","citation":"30 CFR 56.1000","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":"Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30","part":"50","subchapter":"I","subpart":"D","id":"50.30","citation":"30 CFR 50.30","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER I—ACCIDENTS, INJURIES, ILLNESSES, EMPLOYMENT, AND PRODUCTION IN MINES","partHeading":"PART 50—NOTIFICATION, INVESTIGATION, REPORTS AND RECORDS OF ACCIDENTS, INJURIES, ILLNESSES, EMPLOYMENT, AND COAL PRODUCTION IN MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","heading":"Construction and maintenance of guards.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112","part":"56","subchapter":"K","subpart":"M","id":"56.14112","citation":"30 CFR 56.14112","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":"Warning signs.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4101","part":"56","subchapter":"K","subpart":"C","id":"56.4101","citation":"30 CFR 56.4101","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":"1103167","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}