{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"3201023","name":"Crusher #1","status":"Abandoned","status_date":"2026-05-06","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"ND","county":"Mckenzie","nearest_town":"Watford City","operator_id":"0131634","operator_name":"Black Diamond Construction Co","controller_id":"0111943","controller_name":"Travis  Klamm; John  Klamm","district":"M6","office":"Rapid City SD Field Office","employees":0,"latitude":47.867778,"longitude":-103.1375},"coverage":{"contributingSources":9,"registeredSources":20,"sourceRows":92},"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":"3201023","name":"Crusher #1"},"operator":{"type":"operator","id":"0131634","name":"Black Diamond Construction Co"},"controller":{"type":"controller","id":"0111943","name":"Travis  Klamm; John  Klamm"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0131634","name":"Black Diamond Construction Co"},"object":{"type":"mine","id":"3201023","name":"Crusher #1"},"validFrom":"2013-11-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3201023|0131634|2013-11-15|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0111943","name":"Travis  Klamm et al"},"object":{"type":"mine","id":"3201023","name":"Crusher #1"},"validFrom":"2013-11-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3201023|0111943|2013-11-15|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0111943","name":"Travis  Klamm et al"},"object":{"type":"operator","id":"0131634","name":"Black Diamond Construction Co"},"validFrom":"2013-11-15","validTo":null,"current":true,"derived":true,"evidenceMineId":"3201023","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3201023|0131634|2013-11-15|0111943|2013-11-15|20698"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0111943","name":"John  Klamm et al"},"object":{"type":"operator","id":"0131634","name":"Black Diamond Construction Co"},"validFrom":"2013-11-15","validTo":null,"current":true,"derived":true,"evidenceMineId":"3201023","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3201023|0131634|2013-11-15|0111943|2013-11-15|20699"}}],"coverage":{"historyRecords":2,"edgeCount":4,"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":"2026-05-06","lastDate":"2026-05-06","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":8,"firstDate":"2017-11-24","lastDate":"2022-12-14","metrics":{"ss":0,"delinquent":7,"recentRows":2,"paidPenalty":1011,"proposedPenalty":1011,"currentAssessment":1011},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"2624556","VIOLATION_NO":"9720890","ISSUE_DT":"12/14/2022","CFR_STANDARD_CD":"50.30(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"143.00","CURRENT_ASSESSMENT_AMT":"143.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2022-12-14"},{"SOURCE_ROW_NUMBER":"2624555","VIOLATION_NO":"9720889","ISSUE_DT":"12/14/2022","CFR_STANDARD_CD":"50.30(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"143.00","CURRENT_ASSESSMENT_AMT":"143.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2022-12-14"},{"SOURCE_ROW_NUMBER":"2616845","VIOLATION_NO":"9396799","ISSUE_DT":"05/13/2020","CFR_STANDARD_CD":"50.30(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"123.00","CURRENT_ASSESSMENT_AMT":"123.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2020-05-13"},{"SOURCE_ROW_NUMBER":"2508380","VIOLATION_NO":"9395565","ISSUE_DT":"11/05/2019","CFR_STANDARD_CD":"56.14132(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"121.00","CURRENT_ASSESSMENT_AMT":"121.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2019-11-05"},{"SOURCE_ROW_NUMBER":"2508379","VIOLATION_NO":"9395564","ISSUE_DT":"11/05/2019","CFR_STANDARD_CD":"56.14132(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"121.00","CURRENT_ASSESSMENT_AMT":"121.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2019-11-05"},{"SOURCE_ROW_NUMBER":"2507585","VIOLATION_NO":"9398920","ISSUE_DT":"05/30/2019","CFR_STANDARD_CD":"56.18002(b)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"121.00","CURRENT_ASSESSMENT_AMT":"121.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2019-05-30"},{"SOURCE_ROW_NUMBER":"2507584","VIOLATION_NO":"9398919","ISSUE_DT":"05/30/2019","CFR_STANDARD_CD":"56.12028","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"121.00","CURRENT_ASSESSMENT_AMT":"121.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2019-05-30"},{"SOURCE_ROW_NUMBER":"2492033","VIOLATION_NO":"9304657","ISSUE_DT":"11/24/2017","CFR_STANDARD_CD":"50.30(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"118.00","CURRENT_ASSESSMENT_AMT":"118.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2017-11-24"}]},{"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":"2013-11-15","lastDate":"2013-11-15","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":12,"firstDate":"2015-04-10","lastDate":"2023-08-22","metrics":{"inspectors":12,"recentRows":2,"onSiteHours":28.25,"inspectionHours":95.5,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"245637","EVENT_NO":"6941223","INSPECTION_BEGIN_DT":"08/22/2023","INSPECTION_END_DT":"08/22/2023","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3.75","SUM_TOTAL_ON_SITE_HOURS":".25","sourceDate":"2023-08-22"},{"SOURCE_ROW_NUMBER":"15431","EVENT_NO":"6856758","INSPECTION_BEGIN_DT":"12/14/2022","INSPECTION_END_DT":"12/19/2022","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"1.5","SUM_TOTAL_ON_SITE_HOURS":"0","sourceDate":"2022-12-14"},{"SOURCE_ROW_NUMBER":"801588","EVENT_NO":"6783990","INSPECTION_BEGIN_DT":"12/15/2020","INSPECTION_END_DT":"12/15/2020","ACTIVITY_CODE":"E17","ACTIVITY":"Special Emphasis Programs","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"1.25","SUM_TOTAL_ON_SITE_HOURS":"0","sourceDate":"2020-12-15"},{"SOURCE_ROW_NUMBER":"59144","EVENT_NO":"6785081","INSPECTION_BEGIN_DT":"12/15/2020","INSPECTION_END_DT":"01/07/2021","ACTIVITY_CODE":"E17","ACTIVITY":"Special Emphasis Programs","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"1","SUM_TOTAL_ON_SITE_HOURS":"0","sourceDate":"2020-12-15"},{"SOURCE_ROW_NUMBER":"336883","EVENT_NO":"6852634","INSPECTION_BEGIN_DT":"05/13/2020","INSPECTION_END_DT":"05/14/2020","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"1","SUM_TOTAL_ON_SITE_HOURS":"0","sourceDate":"2020-05-13"},{"SOURCE_ROW_NUMBER":"148848","EVENT_NO":"6784120","INSPECTION_BEGIN_DT":"11/26/2019","INSPECTION_END_DT":"11/26/2019","ACTIVITY_CODE":"E15","ACTIVITY":"Compliance Follow-up Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"11","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2019-11-26"},{"SOURCE_ROW_NUMBER":"989125","EVENT_NO":"6784114","INSPECTION_BEGIN_DT":"11/04/2019","INSPECTION_END_DT":"11/05/2019","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"20","SUM_TOTAL_ON_SITE_HOURS":"6","sourceDate":"2019-11-04"},{"SOURCE_ROW_NUMBER":"524232","EVENT_NO":"6783712","INSPECTION_BEGIN_DT":"05/30/2019","INSPECTION_END_DT":"05/31/2019","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"12.5","SUM_TOTAL_ON_SITE_HOURS":"5.5","sourceDate":"2019-05-30"},{"SOURCE_ROW_NUMBER":"978852","EVENT_NO":"6780976","INSPECTION_BEGIN_DT":"09/26/2018","INSPECTION_END_DT":"09/26/2018","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"18","SUM_TOTAL_ON_SITE_HOURS":"10.25","sourceDate":"2018-09-26"},{"SOURCE_ROW_NUMBER":"1133621","EVENT_NO":"6780968","INSPECTION_BEGIN_DT":"07/26/2018","INSPECTION_END_DT":"07/26/2018","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"16.25","SUM_TOTAL_ON_SITE_HOURS":"4.25","sourceDate":"2018-07-26"},{"SOURCE_ROW_NUMBER":"1081455","EVENT_NO":"6773994","INSPECTION_BEGIN_DT":"11/24/2017","INSPECTION_END_DT":"11/24/2017","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.25","SUM_TOTAL_ON_SITE_HOURS":"0","sourceDate":"2017-11-24"},{"SOURCE_ROW_NUMBER":"488890","EVENT_NO":"6618155","INSPECTION_BEGIN_DT":"04/10/2015","INSPECTION_END_DT":"04/10/2015","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"7","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2015-04-10"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":52,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2024-Q3":{"hours":0,"employees":0,"production":0},"2023-Q3":{"hours":0,"employees":0,"production":0},"2023-Q2":{"hours":0,"employees":0,"production":0},"2023-Q1":{"hours":0,"employees":0,"production":0},"2022-Q4":{"hours":0,"employees":0,"production":0},"2022-Q3":{"hours":420,"employees":3,"production":0},"2022-Q2":{"hours":462,"employees":3,"production":0},"2021-Q1":{"hours":0,"employees":0,"production":0},"2020-Q4":{"hours":0,"employees":0,"production":0},"2020-Q3":{"hours":0,"employees":0,"production":0},"2020-Q2":{"hours":0,"employees":0,"production":0},"2020-Q1":{"hours":1978,"employees":5,"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":7,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2014":{"hours":557,"employees":2,"production":0},"2015":{"hours":76,"employees":2,"production":0},"2017":{"hours":726,"employees":4,"production":0},"2018":{"hours":3968,"employees":2,"production":0},"2019":{"hours":8795,"employees":5,"production":0},"2020":{"hours":1978,"employees":5,"production":0},"2022":{"hours":882,"employees":3,"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":"2018-09-26","lastDate":"2018-09-26","metrics":{"recentRows":0,"actionTaken":1,"maxExposureRatio":0,"overExposureLimit":0,"exposureRatioTotal":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"229333","EVENT_NO":"6780976","SAMPLE_NO":"000000201805272500","SAMPLE_DATE":"09/26/2018","CONTAMINANT_DESC":"Unlisted Particulate, respirable, <1% Qtz","CONCENTRATION":"0000.13","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Crusher Oper/Worker","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2018-09-26"}]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":8,"firstDate":"2017-11-24","lastDate":"2022-12-14","metrics":{"ss":0,"amountDue":1011,"contested":0,"amountPaid":1011,"recentRows":2,"section104d":0,"unterminated":0,"proposedPenalty":1011},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1709209","VIOLATION_NO":"9720890","VIOLATION_ISSUE_DT":"12/14/2022","SIG_SUB":"N","PART_SECTION":"50.30(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"12/14/2022","PROPOSED_PENALTY":"143","AMOUNT_DUE":"143","AMOUNT_PAID":"143","CONTESTED_IND":"N","sourceDate":"2022-12-14"},{"SOURCE_ROW_NUMBER":"1709208","VIOLATION_NO":"9720889","VIOLATION_ISSUE_DT":"12/14/2022","SIG_SUB":"N","PART_SECTION":"50.30(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"12/14/2022","PROPOSED_PENALTY":"143","AMOUNT_DUE":"143","AMOUNT_PAID":"143","CONTESTED_IND":"N","sourceDate":"2022-12-14"},{"SOURCE_ROW_NUMBER":"1709202","VIOLATION_NO":"9396799","VIOLATION_ISSUE_DT":"05/13/2020","SIG_SUB":"N","PART_SECTION":"50.30(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"05/14/2020","PROPOSED_PENALTY":"123","AMOUNT_DUE":"123","AMOUNT_PAID":"123","CONTESTED_IND":"N","sourceDate":"2020-05-13"},{"SOURCE_ROW_NUMBER":"1709206","VIOLATION_NO":"9395565","VIOLATION_ISSUE_DT":"11/05/2019","SIG_SUB":"N","PART_SECTION":"56.14132(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"11/26/2019","PROPOSED_PENALTY":"121","AMOUNT_DUE":"121","AMOUNT_PAID":"121","CONTESTED_IND":"N","sourceDate":"2019-11-05"},{"SOURCE_ROW_NUMBER":"1709205","VIOLATION_NO":"9395564","VIOLATION_ISSUE_DT":"11/05/2019","SIG_SUB":"N","PART_SECTION":"56.14132(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"11/26/2019","PROPOSED_PENALTY":"121","AMOUNT_DUE":"121","AMOUNT_PAID":"121","CONTESTED_IND":"N","sourceDate":"2019-11-05"},{"SOURCE_ROW_NUMBER":"1709204","VIOLATION_NO":"9398920","VIOLATION_ISSUE_DT":"05/30/2019","SIG_SUB":"N","PART_SECTION":"56.18002(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"HighNegligence","TERMINATION_DT":"05/30/2019","PROPOSED_PENALTY":"121","AMOUNT_DUE":"121","AMOUNT_PAID":"121","CONTESTED_IND":"N","sourceDate":"2019-05-30"},{"SOURCE_ROW_NUMBER":"1709203","VIOLATION_NO":"9398919","VIOLATION_ISSUE_DT":"05/30/2019","SIG_SUB":"N","PART_SECTION":"56.12028","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"06/20/2019","PROPOSED_PENALTY":"121","AMOUNT_DUE":"121","AMOUNT_PAID":"121","CONTESTED_IND":"N","sourceDate":"2019-05-30"},{"SOURCE_ROW_NUMBER":"1709207","VIOLATION_NO":"9304657","VIOLATION_ISSUE_DT":"11/24/2017","SIG_SUB":"N","PART_SECTION":"50.30(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"11/24/2017","PROPOSED_PENALTY":"118","AMOUNT_DUE":"118","AMOUNT_PAID":"118","CONTESTED_IND":"N","sourceDate":"2017-11-24"}]}],"safety":{"href":"/api/v1/mines/3201023/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/3201023/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":"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":4},{"chapter":"I","heading":"Horns and backup alarms.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132","part":"56","subchapter":"K","subpart":"M","id":"56.14132","citation":"30 CFR 56.14132","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":2},{"chapter":"I","heading":"Examination of working places.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18002","part":"56","subchapter":"K","subpart":"Q","id":"56.18002","citation":"30 CFR 56.18002","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":"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}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"3201023","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}