{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"1300433","name":"FORT DODGE QUARRY","status":"Active","status_date":"2008-02-22","mine_type":"Surface","coal_metal":"M","commodity":"Gypsum","state":"IA","county":"Webster","nearest_town":"Fort Dodge","operator_id":"L00537","operator_name":"United States Gypsum Company","controller_id":"M00007","controller_name":"USG Corporation","district":"M4","office":"Fort Dodge IA Field Office","employees":23,"latitude":42.485,"longitude":-94.131389},"coverage":{"contributingSources":15,"registeredSources":20,"sourceRows":1392},"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":"1300433","name":"FORT DODGE QUARRY"},"operator":{"type":"operator","id":"L00537","name":"United States Gypsum Company"},"controller":{"type":"controller","id":"M00007","name":"USG Corporation"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00537","name":"United States Gypsum Company"},"object":{"type":"mine","id":"1300433","name":"FORT DODGE QUARRY"},"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":"1300433|L00537|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00007","name":"USG Corporation"},"object":{"type":"mine","id":"1300433","name":"FORT DODGE QUARRY"},"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":"1300433|M00007|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00007","name":"USG Corporation"},"object":{"type":"operator","id":"L00537","name":"United States Gypsum Company"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1300433","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1300433|L00537|1950-01-01|M00007|1950-01-01|101121"}}],"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":13,"firstDate":"2000-06-02","lastDate":"2023-05-19","metrics":{"daysLost":67,"injuries":13,"fatalities":0,"recentRows":1,"restrictedDays":91,"contractorRecords":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"173159","DOCUMENT_NO":"220240650014","ACCIDENT_DT":"05/19/2023","DEGREE_INJURY":"NO DYS AWY FRM WRK,NO RSTR ACT","CLASSIFICATION":"NONPOWERED HAULAGE","ACCIDENT_TYPE":"Fall to the walkway or working surface","OCCUPATION":"Miner, Prospector, NEC","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"On 5/11/23, operator was using a dolly to move ten-50lb bags of material. 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