{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"0301462","name":"Preston Quarry","status":"Active","status_date":"2014-04-01","mine_type":"Surface","coal_metal":"M","commodity":"Crushed, Broken Sandstone","state":"AR","county":"Crawford","nearest_town":"Ft Smith","operator_id":"L11502","operator_name":"ARKHOLA","controller_id":"M06183","controller_name":"CRH PLC","district":"M5","office":"Little Rock AR Field Office","employees":20,"latitude":35.466389,"longitude":-94.280833},"coverage":{"contributingSources":15,"registeredSources":20,"sourceRows":1810},"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":"0301462","name":"Preston Quarry"},"operator":{"type":"operator","id":"L11502","name":"ARKHOLA"},"controller":{"type":"controller","id":"M06183","name":"CRH PLC"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00049","name":"Ashland Inc"},"object":{"type":"mine","id":"0301462","name":"Preston Quarry"},"validFrom":"1950-01-01","validTo":"2006-08-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0301462|M00049|1950-01-01|2006-08-27"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11502","name":"ARKHOLA"},"object":{"type":"mine","id":"0301462","name":"Preston Quarry"},"validFrom":"1979-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0301462|L11502|1979-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00049","name":"Ashland Inc"},"object":{"type":"operator","id":"L11502","name":"ARKHOLA"},"validFrom":"1979-01-01","validTo":"2006-08-27","current":false,"derived":true,"evidenceMineId":"0301462","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0301462|L11502|1979-01-01|M00049|1950-01-01|102567"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"mine","id":"0301462","name":"Preston Quarry"},"validFrom":"2006-08-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0301462|M06183|2006-08-28|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"operator","id":"L11502","name":"ARKHOLA"},"validFrom":"2006-08-28","validTo":null,"current":true,"derived":true,"evidenceMineId":"0301462","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0301462|L11502|1979-01-01|M06183|2006-08-28|137178"}}],"coverage":{"historyRecords":2,"edgeCount":5,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"sources":[{"id":"msha-accidents","name":"Accident, Injuries, and Illnesses","domains":["safety","contractors"],"products":["incident trends","severity rates","equipment patterns","peer denominators"],"rowCount":14,"firstDate":"2000-04-03","lastDate":"2025-08-20","metrics":{"daysLost":30,"injuries":14,"fatalities":0,"recentRows":5,"restrictedDays":445,"contractorRecords":1},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"163796","DOCUMENT_NO":"220252400023","ACCIDENT_DT":"08/20/2025","DEGREE_INJURY":"DAYS RESTRICTED ACTIVITY ONLY","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Over-exertion in pulling or pushing objects","OCCUPATION":"Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"Employee was assisting in changing out a screen. 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The operator is not responsible for an inaccurate label obtained from the chemical's manufacturer or supplier.","occurrenceCount":2},{"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":"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":1},{"chapter":"I","heading":"Controls and switches.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12002","part":"56","subchapter":"K","subpart":"K","id":"56.12002","citation":"30 CFR 56.12002","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":"Inspection.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201","part":"56","subchapter":"K","subpart":"C","id":"56.4201","citation":"30 CFR 56.4201","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":"Records of training.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.9","part":"46","subchapter":"H","subpart":"","id":"46.9","citation":"30 CFR 46.9","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER H—EDUCATION AND TRAINING","partHeading":"PART 46—TRAINING AND RETRAINING OF MINERS ENGAGED IN SHELL DREDGING OR EMPLOYED AT SAND, GRAVEL, SURFACE STONE, SURFACE CLAY, COLLOIDAL PHOSPHATE, OR SURFACE LIMESTONE MINES.","subpartHeading":"","text":null,"occurrenceCount":2},{"chapter":"I","heading":"Moving machine parts.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107","part":"56","subchapter":"K","subpart":"M","id":"56.14107","citation":"30 CFR 56.14107","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":"General requirements.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4200","part":"56","subchapter":"K","subpart":"C","id":"56.4200","citation":"30 CFR 56.4200","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":"0301462","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}