{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"3608092","name":"7 Ft Drift","status":"Abandoned","status_date":"2006-02-21","mine_type":"Underground","coal_metal":"C","commodity":"Coal (Anthracite)","state":"PA","county":"Schuylkill","nearest_town":"Heckscherville","operator_id":"P20362","operator_name":"D & D Coal Company","controller_id":"C01018","controller_name":"Donald  Metzinger","district":"M2","office":"Frackville PA Field Office","employees":0,"latitude":40.730555,"longitude":-76.251388},"coverage":{"contributingSources":7,"registeredSources":20,"sourceRows":58},"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":"3608092","name":"7 Ft Drift"},"operator":{"type":"operator","id":"P20362","name":"D & D Coal Company"},"controller":{"type":"controller","id":"C01018","name":"Donald  Metzinger"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P20362","name":"D & D Coal Company"},"object":{"type":"mine","id":"3608092","name":"7 Ft Drift"},"validFrom":"1989-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608092|P20362|1989-07-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01018","name":"Donald  Metzinger"},"object":{"type":"mine","id":"3608092","name":"7 Ft Drift"},"validFrom":"1989-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608092|C01018|1989-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01018","name":"Donald  Metzinger"},"object":{"type":"operator","id":"P20362","name":"D & D Coal Company"},"validFrom":"1989-07-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3608092","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608092|P20362|1989-07-01|C01018|1989-07-01|51764"}}],"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":"2006-02-21","lastDate":"2006-02-21","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":12,"firstDate":"2000-02-15","lastDate":"2004-08-13","metrics":{"ss":0,"delinquent":12,"recentRows":0,"paidPenalty":0,"proposedPenalty":1744,"currentAssessment":1744},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1306255","VIOLATION_NO":"7005998","ISSUE_DT":"08/13/2004","CFR_STANDARD_CD":"75.1730(e)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"60.00","CURRENT_ASSESSMENT_AMT":"60.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2004-08-13"},{"SOURCE_ROW_NUMBER":"1306258","VIOLATION_NO":"7006725","ISSUE_DT":"08/12/2004","CFR_STANDARD_CD":"77.1103(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"60.00","CURRENT_ASSESSMENT_AMT":"60.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2004-08-12"},{"SOURCE_ROW_NUMBER":"1306257","VIOLATION_NO":"7006724","ISSUE_DT":"08/12/2004","CFR_STANDARD_CD":"75.310(a)(4)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"178.00","CURRENT_ASSESSMENT_AMT":"178.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2004-08-12"},{"SOURCE_ROW_NUMBER":"1306256","VIOLATION_NO":"7006723","ISSUE_DT":"08/12/2004","CFR_STANDARD_CD":"75.310(a)(3)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"178.00","CURRENT_ASSESSMENT_AMT":"178.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2004-08-12"},{"SOURCE_ROW_NUMBER":"1306254","VIOLATION_NO":"7005997","ISSUE_DT":"08/12/2004","CFR_STANDARD_CD":"77.1108-1(b)(3)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"60.00","CURRENT_ASSESSMENT_AMT":"60.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2004-08-12"},{"SOURCE_ROW_NUMBER":"1306253","VIOLATION_NO":"7005996","ISSUE_DT":"08/12/2004","CFR_STANDARD_CD":"77.1108-1(b)(3)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"60.00","CURRENT_ASSESSMENT_AMT":"60.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2004-08-12"},{"SOURCE_ROW_NUMBER":"1306252","VIOLATION_NO":"7005995","ISSUE_DT":"08/12/2004","CFR_STANDARD_CD":"77.1102","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"131.00","CURRENT_ASSESSMENT_AMT":"131.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2004-08-12"},{"SOURCE_ROW_NUMBER":"1306251","VIOLATION_NO":"7005994","ISSUE_DT":"08/12/2004","CFR_STANDARD_CD":"75.310(b)(2)(ii)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"131.00","CURRENT_ASSESSMENT_AMT":"131.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2004-08-12"},{"SOURCE_ROW_NUMBER":"1305769","VIOLATION_NO":"7006147","ISSUE_DT":"03/22/2004","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"275.00","CURRENT_ASSESSMENT_AMT":"275.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2004-03-22"},{"SOURCE_ROW_NUMBER":"1305768","VIOLATION_NO":"7006146","ISSUE_DT":"03/22/2004","CFR_STANDARD_CD":"75.1721(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"300.00","CURRENT_ASSESSMENT_AMT":"300.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2004-03-22"},{"SOURCE_ROW_NUMBER":"654045","VIOLATION_NO":"7002377","ISSUE_DT":"02/23/2000","CFR_STANDARD_CD":"75.1200","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"149.00","CURRENT_ASSESSMENT_AMT":"149.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2000-02-23"},{"SOURCE_ROW_NUMBER":"654044","VIOLATION_NO":"7002376","ISSUE_DT":"02/15/2000","CFR_STANDARD_CD":"49.2(a)(2)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"162.00","CURRENT_ASSESSMENT_AMT":"162.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2000-02-15"}]},{"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":"1989-07-01","lastDate":"1989-07-01","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":"2000-01-05","lastDate":"2005-11-16","metrics":{"inspectors":14,"recentRows":0,"onSiteHours":56,"inspectionHours":122.5,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"457898","EVENT_NO":"4302773","INSPECTION_BEGIN_DT":"11/16/2005","INSPECTION_END_DT":"11/16/2005","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"3","SUM_TOTAL_INSP_HOURS":"3.75","SUM_TOTAL_ON_SITE_HOURS":"1.5","sourceDate":"2005-11-16"},{"SOURCE_ROW_NUMBER":"179995","EVENT_NO":"4301567","INSPECTION_BEGIN_DT":"03/10/2005","INSPECTION_END_DT":"03/10/2005","ACTIVITY_CODE":"CFA","ACTIVITY":"MINE IDLE","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"1","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2005-03-10"},{"SOURCE_ROW_NUMBER":"315881","EVENT_NO":"4010142","INSPECTION_BEGIN_DT":"09/22/2004","INSPECTION_END_DT":"09/28/2004","ACTIVITY_CODE":"AAA","ACTIVITY":"Regular Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"9","SUM_TOTAL_ON_SITE_HOURS":"3.5","sourceDate":"2004-09-22"},{"SOURCE_ROW_NUMBER":"771920","EVENT_NO":"4301372","INSPECTION_BEGIN_DT":"08/26/2004","INSPECTION_END_DT":"09/15/2004","ACTIVITY_CODE":"CAA","ACTIVITY":"SPOT INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6.5","SUM_TOTAL_ON_SITE_HOURS":"2.5","sourceDate":"2004-08-26"},{"SOURCE_ROW_NUMBER":"387997","EVENT_NO":"4301371","INSPECTION_BEGIN_DT":"08/12/2004","INSPECTION_END_DT":"08/16/2004","ACTIVITY_CODE":"CCC","ACTIVITY":"VENTILATION TECHNICAL INSPECTION","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"23.5","SUM_TOTAL_ON_SITE_HOURS":"13","sourceDate":"2004-08-12"},{"SOURCE_ROW_NUMBER":"1036175","EVENT_NO":"4300297","INSPECTION_BEGIN_DT":"06/07/2004","INSPECTION_END_DT":"06/08/2004","ACTIVITY_CODE":"AAA","ACTIVITY":"Regular Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6","SUM_TOTAL_ON_SITE_HOURS":"2.5","sourceDate":"2004-06-07"},{"SOURCE_ROW_NUMBER":"534968","EVENT_NO":"4300274","INSPECTION_BEGIN_DT":"03/22/2004","INSPECTION_END_DT":"03/23/2004","ACTIVITY_CODE":"CAA","ACTIVITY":"SPOT INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6.25","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2004-03-22"},{"SOURCE_ROW_NUMBER":"953857","EVENT_NO":"4005461","INSPECTION_BEGIN_DT":"11/28/2000","INSPECTION_END_DT":"11/28/2000","ACTIVITY_CODE":"CFC","ACTIVITY":"OTHER CONTACTS","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"5","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2000-11-28"},{"SOURCE_ROW_NUMBER":"445054","EVENT_NO":"4003114","INSPECTION_BEGIN_DT":"04/24/2000","INSPECTION_END_DT":"04/24/2000","ACTIVITY_CODE":"CFA","ACTIVITY":"MINE IDLE","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2000-04-24"},{"SOURCE_ROW_NUMBER":"1074853","EVENT_NO":"4002683","INSPECTION_BEGIN_DT":"01/05/2000","INSPECTION_END_DT":"03/06/2000","ACTIVITY_CODE":"AAA","ACTIVITY":"Regular Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"57.5","SUM_TOTAL_ON_SITE_HOURS":"28.5","sourceDate":"2000-01-05"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":15,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2004-Q4":{"hours":0,"employees":0,"production":0},"2004-Q3":{"hours":0,"employees":0,"production":0},"2004-Q2":{"hours":0,"employees":0,"production":0},"2002-Q3":{"hours":0,"employees":0,"production":0},"2002-Q2":{"hours":0,"employees":0,"production":0},"2001-Q4":{"hours":0,"employees":0,"production":0},"2001-Q3":{"hours":0,"employees":0,"production":0},"2001-Q2":{"hours":0,"employees":0,"production":0},"2000-Q3":{"hours":0,"employees":0,"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":18,"firstDate":"2000-02-15","lastDate":"2004-09-28","metrics":{"ss":0,"amountDue":1744,"contested":0,"amountPaid":0,"recentRows":0,"section104d":0,"unterminated":6,"proposedPenalty":1744},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1934338","VIOLATION_NO":"7005700","VIOLATION_ISSUE_DT":"09/28/2004","PART_SECTION":"77.1102","CIT_ORD_SAFE":"Order","NO_AFFECTED":"0","TERMINATION_DT":"03/06/2006","CONTESTED_IND":"N","sourceDate":"2004-09-28"},{"SOURCE_ROW_NUMBER":"1934337","VIOLATION_NO":"7005699","VIOLATION_ISSUE_DT":"09/28/2004","PART_SECTION":"75.310(b)(2)(ii)","CIT_ORD_SAFE":"Order","NO_AFFECTED":"0","TERMINATION_DT":"03/06/2006","CONTESTED_IND":"N","sourceDate":"2004-09-28"},{"SOURCE_ROW_NUMBER":"1934336","VIOLATION_NO":"7005698","VIOLATION_ISSUE_DT":"09/28/2004","PART_SECTION":"75.310(a)(4)","CIT_ORD_SAFE":"Order","NO_AFFECTED":"0","TERMINATION_DT":"03/06/2006","CONTESTED_IND":"N","sourceDate":"2004-09-28"},{"SOURCE_ROW_NUMBER":"1934335","VIOLATION_NO":"7005697","VIOLATION_ISSUE_DT":"09/28/2004","PART_SECTION":"75.310(a)(3)","CIT_ORD_SAFE":"Order","NO_AFFECTED":"0","TERMINATION_DT":"03/06/2006","CONTESTED_IND":"N","sourceDate":"2004-09-28"},{"SOURCE_ROW_NUMBER":"1934331","VIOLATION_NO":"7005998","VIOLATION_ISSUE_DT":"08/13/2004","SIG_SUB":"N","PART_SECTION":"75.1730(e)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"08/26/2004","PROPOSED_PENALTY":"60","AMOUNT_DUE":"60","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2004-08-13"},{"SOURCE_ROW_NUMBER":"1934334","VIOLATION_NO":"7006725","VIOLATION_ISSUE_DT":"08/12/2004","SIG_SUB":"N","PART_SECTION":"77.1103(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"08/26/2004","PROPOSED_PENALTY":"60","AMOUNT_DUE":"60","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2004-08-12"},{"SOURCE_ROW_NUMBER":"1934333","VIOLATION_NO":"7006724","VIOLATION_ISSUE_DT":"08/12/2004","SIG_SUB":"N","PART_SECTION":"75.310(a)(4)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","PROPOSED_PENALTY":"178","AMOUNT_DUE":"178","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2004-08-12"},{"SOURCE_ROW_NUMBER":"1934332","VIOLATION_NO":"7006723","VIOLATION_ISSUE_DT":"08/12/2004","SIG_SUB":"N","PART_SECTION":"75.310(a)(3)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","PROPOSED_PENALTY":"178","AMOUNT_DUE":"178","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2004-08-12"},{"SOURCE_ROW_NUMBER":"1934330","VIOLATION_NO":"7005997","VIOLATION_ISSUE_DT":"08/12/2004","SIG_SUB":"N","PART_SECTION":"77.1108-1(b)(3)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"08/16/2004","PROPOSED_PENALTY":"60","AMOUNT_DUE":"60","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2004-08-12"},{"SOURCE_ROW_NUMBER":"1934329","VIOLATION_NO":"7005996","VIOLATION_ISSUE_DT":"08/12/2004","SIG_SUB":"N","PART_SECTION":"77.1108-1(b)(3)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"08/26/2004","PROPOSED_PENALTY":"60","AMOUNT_DUE":"60","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2004-08-12"},{"SOURCE_ROW_NUMBER":"1934328","VIOLATION_NO":"7005995","VIOLATION_ISSUE_DT":"08/12/2004","SIG_SUB":"N","PART_SECTION":"77.1102","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"ModNegligence","PROPOSED_PENALTY":"131","AMOUNT_DUE":"131","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2004-08-12"},{"SOURCE_ROW_NUMBER":"1934327","VIOLATION_NO":"7005994","VIOLATION_ISSUE_DT":"08/12/2004","SIG_SUB":"N","PART_SECTION":"75.310(b)(2)(ii)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"ModNegligence","PROPOSED_PENALTY":"131","AMOUNT_DUE":"131","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2004-08-12"}]}],"safety":{"href":"/api/v1/mines/3608092/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/3608092/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":"Warning signs; smoking and open flame.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1102","part":"77","subchapter":"O","subpart":"L","id":"77.1102","citation":"30 CFR 77.1102","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},{"chapter":"I","heading":"Installation of main mine fans.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.310","part":"75","subchapter":"O","subpart":"D","id":"75.310","citation":"30 CFR 75.310","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":6},{"chapter":"I","heading":"Compressed air; general; compressed air systems.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1730","part":"75","subchapter":"O","subpart":"R","id":"75.1730","citation":"30 CFR 75.1730","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":"Flammable liquids; storage.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1103","part":"77","subchapter":"O","subpart":"L","id":"77.1103","citation":"30 CFR 77.1103","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":"Type and capacity of firefighting equipment.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1108-1","part":"77","subchapter":"O","subpart":"L","id":"77.1108-1","citation":"30 CFR 77.1108-1","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":"3608092","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}