{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-17T06:17:15.228Z","identity":{"mine_id":"2003547","name":"McCloskey Screener II","status":"Intermittent","status_date":"2017-07-19","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"MI","county":"Kent","nearest_town":"Kent City","operator_id":"L11600","operator_name":"Barber Creek Sand & Gravel, Inc.","controller_id":"M08960","controller_name":"Daniel  Groenke","district":"M4","office":"Lansing MI Field Office","employees":2,"latitude":43.3075,"longitude":-85.612778},"coverage":{"contributingSources":8,"registeredSources":20,"sourceRows":51},"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":"2003547","name":"McCloskey Screener II"},"operator":{"type":"operator","id":"L11600","name":"Barber Creek Sand & Gravel, Inc."},"controller":{"type":"controller","id":"M08960","name":"Daniel  Groenke"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08960","name":"Daniel  Groenke"},"object":{"type":"mine","id":"2003547","name":"McCloskey Screener II"},"validFrom":"1984-12-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2003547|M08960|1984-12-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11600","name":"Barber Creek Sand & Gravel, Inc."},"object":{"type":"mine","id":"2003547","name":"McCloskey Screener II"},"validFrom":"2017-07-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2003547|L11600|2017-07-18|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08960","name":"Daniel  Groenke"},"object":{"type":"operator","id":"L11600","name":"Barber Creek Sand & Gravel, Inc."},"validFrom":"2017-07-18","validTo":null,"current":true,"derived":true,"evidenceMineId":"2003547","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2003547|L11600|2017-07-18|M08960|1984-12-01|144775"}}],"coverage":{"historyRecords":1,"edgeCount":3,"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":"2017-07-19","lastDate":"2017-07-19","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":"2021-05-27","lastDate":"2026-06-16","metrics":{"ss":3,"delinquent":7,"recentRows":8,"paidPenalty":1068,"proposedPenalty":1068,"currentAssessment":1068},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"3040252","VIOLATION_NO":"5110363","ISSUE_DT":"06/16/2026","CFR_STANDARD_CD":"50.30(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"151.00","CURRENT_ASSESSMENT_AMT":"151.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2026-06-16"},{"SOURCE_ROW_NUMBER":"3040251","VIOLATION_NO":"5110362","ISSUE_DT":"06/15/2026","CFR_STANDARD_CD":"56.14100(b)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"151.00","CURRENT_ASSESSMENT_AMT":"151.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2026-06-15"},{"SOURCE_ROW_NUMBER":"2701695","VIOLATION_NO":"9623855","ISSUE_DT":"11/14/2022","CFR_STANDARD_CD":"56.14100(b)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"133.00","CURRENT_ASSESSMENT_AMT":"133.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2022-11-14"},{"SOURCE_ROW_NUMBER":"2701694","VIOLATION_NO":"9623854","ISSUE_DT":"11/09/2022","CFR_STANDARD_CD":"56.14103(b)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"133.00","CURRENT_ASSESSMENT_AMT":"133.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2022-11-09"},{"SOURCE_ROW_NUMBER":"2690594","VIOLATION_NO":"9622089","ISSUE_DT":"11/30/2021","CFR_STANDARD_CD":"56.9300(a)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"125.00","CURRENT_ASSESSMENT_AMT":"125.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2021-11-30"},{"SOURCE_ROW_NUMBER":"2690593","VIOLATION_NO":"9622088","ISSUE_DT":"11/30/2021","CFR_STANDARD_CD":"56.14132(b)(1)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"125.00","CURRENT_ASSESSMENT_AMT":"125.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2021-11-30"},{"SOURCE_ROW_NUMBER":"2690592","VIOLATION_NO":"9622087","ISSUE_DT":"11/30/2021","CFR_STANDARD_CD":"56.14132(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"125.00","CURRENT_ASSESSMENT_AMT":"125.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2021-11-30"},{"SOURCE_ROW_NUMBER":"2690163","VIOLATION_NO":"9389801","ISSUE_DT":"05/27/2021","CFR_STANDARD_CD":"56.9300(a)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"125.00","CURRENT_ASSESSMENT_AMT":"125.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2021-05-27"}]},{"id":"msha-controller-operator-history","name":"Controller and Operator History","domains":["identity","compliance"],"products":["historical ownership attribution","operator transitions","valid-time joins"],"rowCount":1,"firstDate":"2017-07-18","lastDate":"2017-07-18","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":0},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":10,"firstDate":"2018-03-06","lastDate":"2026-06-15","metrics":{"inspectors":10,"recentRows":7,"onSiteHours":59.25,"inspectionHours":108.5,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"919997","EVENT_NO":"F040C38","INSPECTION_BEGIN_DT":"06/15/2026","INSPECTION_END_DT":"06/18/2026","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"28.75","SUM_TOTAL_ON_SITE_HOURS":"19.5","sourceDate":"2026-06-15"},{"SOURCE_ROW_NUMBER":"833843","EVENT_NO":"F011615","INSPECTION_BEGIN_DT":"12/16/2024","INSPECTION_END_DT":"12/16/2024","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"7","SUM_TOTAL_ON_SITE_HOURS":"2.75","sourceDate":"2024-12-16"},{"SOURCE_ROW_NUMBER":"1062609","EVENT_NO":"6908282","INSPECTION_BEGIN_DT":"07/02/2024","INSPECTION_END_DT":"07/02/2024","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"18.5","SUM_TOTAL_ON_SITE_HOURS":"9.5","sourceDate":"2024-07-02"},{"SOURCE_ROW_NUMBER":"399428","EVENT_NO":"6908131","INSPECTION_BEGIN_DT":"12/19/2022","INSPECTION_END_DT":"12/19/2022","ACTIVITY_CODE":"E15","ACTIVITY":"Compliance Follow-up Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4.5","SUM_TOTAL_ON_SITE_HOURS":"1.5","sourceDate":"2022-12-19"},{"SOURCE_ROW_NUMBER":"317486","EVENT_NO":"6908124","INSPECTION_BEGIN_DT":"11/09/2022","INSPECTION_END_DT":"11/14/2022","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8.25","SUM_TOTAL_ON_SITE_HOURS":"2.75","sourceDate":"2022-11-09"},{"SOURCE_ROW_NUMBER":"223794","EVENT_NO":"6902446","INSPECTION_BEGIN_DT":"11/30/2021","INSPECTION_END_DT":"12/01/2021","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"20","SUM_TOTAL_ON_SITE_HOURS":"11","sourceDate":"2021-11-30"},{"SOURCE_ROW_NUMBER":"1145845","EVENT_NO":"6902163","INSPECTION_BEGIN_DT":"05/27/2021","INSPECTION_END_DT":"05/27/2021","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"5.5","SUM_TOTAL_ON_SITE_HOURS":"2.25","sourceDate":"2021-05-27"},{"SOURCE_ROW_NUMBER":"616421","EVENT_NO":"6835084","INSPECTION_BEGIN_DT":"05/13/2020","INSPECTION_END_DT":"05/13/2020","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"5","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2020-05-13"},{"SOURCE_ROW_NUMBER":"806294","EVENT_NO":"6748561","INSPECTION_BEGIN_DT":"04/24/2019","INSPECTION_END_DT":"04/24/2019","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6","SUM_TOTAL_ON_SITE_HOURS":"5","sourceDate":"2019-04-24"},{"SOURCE_ROW_NUMBER":"682560","EVENT_NO":"6748034","INSPECTION_BEGIN_DT":"03/06/2018","INSPECTION_END_DT":"03/06/2018","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"5","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2018-03-06"}]},{"id":"msha-mine-production-yearly","name":"Mine Employment and Production — Yearly","domains":["production","safety","compliance"],"products":["annual trend","backfill","quarterly reconciliation"],"rowCount":20,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2017":{"hours":389,"employees":2,"production":0},"2018":{"hours":1177,"employees":2,"production":0},"2019":{"hours":1148,"employees":2,"production":0},"2020":{"hours":1696,"employees":2,"production":0},"2021":{"hours":1066,"employees":2,"production":0},"2022":{"hours":973,"employees":2,"production":0},"2023":{"hours":800,"employees":2,"production":0},"2024":{"hours":1764,"employees":3,"production":0},"2025":{"hours":1815,"employees":2,"production":0},"2026":{"hours":452,"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":2,"firstDate":"2024-07-02","lastDate":"2026-06-16","metrics":{"recentRows":2,"actionTaken":2,"maxExposureRatio":0,"overExposureLimit":0,"exposureRatioTotal":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"313309","EVENT_NO":"F040C38","SAMPLE_NO":"000000202602487700","SAMPLE_DATE":"06/16/2026","CONTAMINANT_DESC":"Unlisted Particulate, respirable, <1% Qtz","CONCENTRATION":"0000.15","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Utility Man","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2026-06-16"},{"SOURCE_ROW_NUMBER":"286843","EVENT_NO":"6908282","SAMPLE_NO":"000000202402755600","SAMPLE_DATE":"07/02/2024","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":"2024-07-02"}]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":8,"firstDate":"2021-05-27","lastDate":"2026-06-16","metrics":{"ss":3,"amountDue":1068,"contested":0,"amountPaid":1068,"recentRows":8,"section104d":0,"unterminated":0,"proposedPenalty":1068},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1327549","VIOLATION_NO":"5110363","VIOLATION_ISSUE_DT":"06/16/2026","SIG_SUB":"N","PART_SECTION":"50.30(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"06/16/2026","PROPOSED_PENALTY":"151","AMOUNT_DUE":"151","AMOUNT_PAID":"151","CONTESTED_IND":"N","sourceDate":"2026-06-16"},{"SOURCE_ROW_NUMBER":"1327548","VIOLATION_NO":"5110362","VIOLATION_ISSUE_DT":"06/15/2026","SIG_SUB":"N","PART_SECTION":"56.14100(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"06/18/2026","PROPOSED_PENALTY":"151","AMOUNT_DUE":"151","AMOUNT_PAID":"151","CONTESTED_IND":"N","sourceDate":"2026-06-15"},{"SOURCE_ROW_NUMBER":"1327551","VIOLATION_NO":"9623855","VIOLATION_ISSUE_DT":"11/14/2022","SIG_SUB":"N","PART_SECTION":"56.14100(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"12/19/2022","PROPOSED_PENALTY":"133","AMOUNT_DUE":"133","AMOUNT_PAID":"133","CONTESTED_IND":"N","sourceDate":"2022-11-14"},{"SOURCE_ROW_NUMBER":"1327550","VIOLATION_NO":"9623854","VIOLATION_ISSUE_DT":"11/09/2022","SIG_SUB":"Y","PART_SECTION":"56.14103(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"12/19/2022","PROPOSED_PENALTY":"133","AMOUNT_DUE":"133","AMOUNT_PAID":"133","CONTESTED_IND":"N","sourceDate":"2022-11-09"},{"SOURCE_ROW_NUMBER":"1327554","VIOLATION_NO":"9622089","VIOLATION_ISSUE_DT":"11/30/2021","SIG_SUB":"Y","PART_SECTION":"56.9300(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"11/30/2021","PROPOSED_PENALTY":"125","AMOUNT_DUE":"125","AMOUNT_PAID":"125","CONTESTED_IND":"N","sourceDate":"2021-11-30"},{"SOURCE_ROW_NUMBER":"1327553","VIOLATION_NO":"9622088","VIOLATION_ISSUE_DT":"11/30/2021","SIG_SUB":"N","PART_SECTION":"56.14132(b)(1)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Permanent","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"12/01/2021","PROPOSED_PENALTY":"125","AMOUNT_DUE":"125","AMOUNT_PAID":"125","CONTESTED_IND":"N","sourceDate":"2021-11-30"},{"SOURCE_ROW_NUMBER":"1327552","VIOLATION_NO":"9622087","VIOLATION_ISSUE_DT":"11/30/2021","SIG_SUB":"N","PART_SECTION":"56.14132(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"12/01/2021","PROPOSED_PENALTY":"125","AMOUNT_DUE":"125","AMOUNT_PAID":"125","CONTESTED_IND":"N","sourceDate":"2021-11-30"},{"SOURCE_ROW_NUMBER":"1327547","VIOLATION_NO":"9389801","VIOLATION_ISSUE_DT":"05/27/2021","SIG_SUB":"Y","PART_SECTION":"56.9300(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/27/2021","PROPOSED_PENALTY":"125","AMOUNT_DUE":"125","AMOUNT_PAID":"125","CONTESTED_IND":"N","sourceDate":"2021-05-27"}]}],"safety":{"href":"/api/v1/mines/2003547/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/2003547/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":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":2},{"chapter":"I","heading":"Operators stations.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14103","part":"56","subchapter":"K","subpart":"M","id":"56.14103","citation":"30 CFR 56.14103","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":"Berms or guardrails.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9300","part":"56","subchapter":"K","subpart":"H","id":"56.9300","citation":"30 CFR 56.9300","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":"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}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"2003547","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873}}