{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"1518157","name":"Jefferson County Stone","status":"Active","status_date":"2001-10-25","mine_type":"Underground","coal_metal":"M","commodity":"Crushed, Broken Limestone NEC","state":"KY","county":"Jefferson","nearest_town":"Louisville, KY","operator_id":"L06514","operator_name":"Rogers Group Inc","controller_id":"M00452","controller_name":"Rogers Group Inc","district":"C07","office":"Lexington KY Field Office","employees":60,"latitude":38.268611,"longitude":-85.504167},"coverage":{"contributingSources":16,"registeredSources":20,"sourceRows":5126},"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":"1518157","name":"Jefferson County Stone"},"operator":{"type":"operator","id":"L06514","name":"Rogers Group Inc"},"controller":{"type":"controller","id":"M00452","name":"Rogers Group Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00452","name":"Rogers Group Inc"},"object":{"type":"mine","id":"1518157","name":"Jefferson County Stone"},"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":"1518157|M00452|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L06514","name":"Rogers Group Inc"},"object":{"type":"mine","id":"1518157","name":"Jefferson County Stone"},"validFrom":"1999-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518157|L06514|1999-03-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00452","name":"Rogers Group Inc"},"object":{"type":"operator","id":"L06514","name":"Rogers Group Inc"},"validFrom":"1999-03-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1518157","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518157|L06514|1999-03-01|M00452|1950-01-01|111111"}}],"coverage":{"historyRecords":1,"edgeCount":3,"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":39,"firstDate":"2000-04-05","lastDate":"2025-12-05","metrics":{"daysLost":925,"injuries":38,"fatalities":0,"recentRows":7,"restrictedDays":456,"contractorRecords":5},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"190592","DOCUMENT_NO":"220253490008","ACCIDENT_DT":"12/05/2025","DEGREE_INJURY":"NO DYS AWY FRM WRK,NO RSTR ACT","CLASSIFICATION":"SLIP OR FALL OF PERSON","ACCIDENT_TYPE":"Fall to the walkway or working surface","OCCUPATION":"Utility man, Errand boy, Service truck operator","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"Employee was removing roof bolts from pushed up scaling pile, after EE placed a bolt into the bucket of the loader EE was operating, employee tripped or lost EE's balance and fell to the ground at the base of the pile striking EE's head on a rock, employee suffered laceration to eyebrow and a broken nose.","sourceDate":"2025-12-05"},{"SOURCE_ROW_NUMBER":"173451","DOCUMENT_NO":"220253230022","ACCIDENT_DT":"11/14/2025","DEGREE_INJURY":"NO DYS AWY FRM WRK,NO RSTR ACT","CLASSIFICATION":"FALL OF ROOF OR BACK","ACCIDENT_TYPE":"Struck by falling object","OCCUPATION":"Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"Employee had bolted the face up tight then backed out roughly 50', was reloading bolt supplies when a piece of material fell from in between the roof bolts. 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