{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"1100050","name":"Hardin County Plant #2","status":"Abandoned","status_date":"2004-04-22","mine_type":"Surface","coal_metal":"M","commodity":"Crushed, Broken Limestone NEC","state":"IL","county":"Hardin","nearest_town":"Cave-In-Rock","operator_id":"L00208","operator_name":"Martin Marietta Aggregates","controller_id":"M00174","controller_name":"Martin Marietta Materials Inc","district":"M4","office":"Duluth District","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":8,"registeredSources":20,"sourceRows":38},"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":"1100050","name":"Hardin County Plant #2"},"operator":{"type":"operator","id":"L00208","name":"Martin Marietta Aggregates"},"controller":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"mine","id":"1100050","name":"Hardin County Plant #2"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1100050|M00174|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11250","name":"Denny & Simpson Stone Company Inc"},"object":{"type":"mine","id":"1100050","name":"Hardin County Plant #2"},"validFrom":"1950-01-01","validTo":"1989-10-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1100050|L11250|1950-01-01|1989-10-01"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08710","name":"D C  Simpson"},"object":{"type":"mine","id":"1100050","name":"Hardin County Plant #2"},"validFrom":"1950-01-01","validTo":"1989-10-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1100050|M08710|1950-01-01|1989-10-01"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08710","name":"D C  Simpson"},"object":{"type":"operator","id":"L11250","name":"Denny & Simpson Stone Company Inc"},"validFrom":"1950-01-01","validTo":"1989-10-01","current":false,"derived":true,"evidenceMineId":"1100050","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1100050|L11250|1950-01-01|M08710|1950-01-01|143916"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11253","name":"Hardin County Materials Company"},"object":{"type":"mine","id":"1100050","name":"Hardin County Plant #2"},"validFrom":"1989-10-02","validTo":"1997-05-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1100050|L11253|1989-10-02|1997-05-04"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08713","name":"Rigsby & Barnard Quarry Inc  et al"},"object":{"type":"mine","id":"1100050","name":"Hardin County Plant #2"},"validFrom":"1989-10-02","validTo":"1997-05-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1100050|M08713|1989-10-02|1997-05-04"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08713","name":"Rigsby & Barnard Quarry Inc  et al"},"object":{"type":"operator","id":"L11253","name":"Hardin County Materials Company"},"validFrom":"1989-10-02","validTo":"1997-05-04","current":false,"derived":true,"evidenceMineId":"1100050","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1100050|L11253|1989-10-02|M08713|1989-10-02|143920"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00208","name":"Martin Marietta Aggregates"},"object":{"type":"mine","id":"1100050","name":"Hardin County Plant #2"},"validFrom":"1997-05-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1100050|L00208|1997-05-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"operator","id":"L00208","name":"Martin Marietta Aggregates"},"validFrom":"1997-05-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"1100050","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1100050|L00208|1997-05-05|M00174|1950-01-01|105690"}}],"coverage":{"historyRecords":3,"edgeCount":9,"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":"2004-04-22","lastDate":"2004-04-22","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":2,"firstDate":"2003-02-04","lastDate":"2003-09-03","metrics":{"ss":1,"delinquent":1,"recentRows":0,"paidPenalty":233,"proposedPenalty":233,"currentAssessment":233},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"330060","VIOLATION_NO":"6156693","ISSUE_DT":"09/03/2003","CFR_STANDARD_CD":"50.30","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"60.00","CURRENT_ASSESSMENT_AMT":"60.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2003-09-03"},{"SOURCE_ROW_NUMBER":"329043","VIOLATION_NO":"7849957","ISSUE_DT":"02/04/2003","CFR_STANDARD_CD":"56.11001","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"173.00","CURRENT_ASSESSMENT_AMT":"173.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2003-02-04"}]},{"id":"msha-controller-operator-history","name":"Controller and Operator History","domains":["identity","compliance"],"products":["historical ownership attribution","operator transitions","valid-time joins"],"rowCount":3,"firstDate":"1950-01-01","lastDate":"1997-05-05","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":2},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":2,"firstDate":"2003-02-04","lastDate":"2003-09-02","metrics":{"inspectors":2,"recentRows":0,"onSiteHours":13,"inspectionHours":22,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1132621","EVENT_NO":"0975821","INSPECTION_BEGIN_DT":"09/02/2003","INSPECTION_END_DT":"09/05/2003","ACTIVITY_CODE":"37","ACTIVITY":"MISCELLANEOUS INSPECTION/INVESTIGATION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8","SUM_TOTAL_ON_SITE_HOURS":"4","sourceDate":"2003-09-02"},{"SOURCE_ROW_NUMBER":"757301","EVENT_NO":"0975033","INSPECTION_BEGIN_DT":"02/04/2003","INSPECTION_END_DT":"02/05/2003","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"14","SUM_TOTAL_ON_SITE_HOURS":"9","sourceDate":"2003-02-04"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":21,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2003-Q1":{"hours":1961,"employees":12,"production":0},"2001-Q4":{"hours":2202,"employees":4,"production":0},"2001-Q3":{"hours":2473,"employees":4,"production":0},"2001-Q2":{"hours":4216,"employees":9,"production":0},"2001-Q1":{"hours":3023,"employees":7,"production":0},"2000-Q4":{"hours":4015,"employees":8,"production":0},"2000-Q3":{"hours":4800,"employees":8,"production":0},"2000-Q2":{"hours":4443,"employees":8,"production":0},"2000-Q1":{"hours":8434,"employees":17,"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":6,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2000":{"hours":21692,"employees":11,"production":0},"2001":{"hours":11914,"employees":6,"production":0},"2003":{"hours":1961,"employees":12,"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":2,"firstDate":"2003-02-04","lastDate":"2003-09-03","metrics":{"ss":1,"amountDue":233,"contested":0,"amountPaid":233,"recentRows":0,"section104d":0,"unterminated":0,"proposedPenalty":233},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"449146","VIOLATION_NO":"6156693","VIOLATION_ISSUE_DT":"09/03/2003","SIG_SUB":"N","PART_SECTION":"50.30","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"09/22/2003","PROPOSED_PENALTY":"60","AMOUNT_DUE":"60","AMOUNT_PAID":"60","CONTESTED_IND":"N","sourceDate":"2003-09-03"},{"SOURCE_ROW_NUMBER":"449145","VIOLATION_NO":"7849957","VIOLATION_ISSUE_DT":"02/04/2003","SIG_SUB":"Y","PART_SECTION":"56.11001","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"02/05/2003","PROPOSED_PENALTY":"173","AMOUNT_DUE":"173","AMOUNT_PAID":"173","CONTESTED_IND":"N","sourceDate":"2003-02-04"}]}],"safety":{"href":"/api/v1/mines/1100050/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/1100050/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":"Safe access.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001","part":"56","subchapter":"K","subpart":"J","id":"56.11001","citation":"30 CFR 56.11001","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":"1100050","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}