{"data":{"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":"4801144","name":"Big Eagle Mine"},"operator":{"type":"operator","id":"L12293","name":"Green Mountain Mining Venture"},"controller":{"type":"controller","id":"M09441","name":"Rtz-Cra Group & U S Energy/Crested Corp"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L02349","name":"Pathfinder Mines Corp"},"object":{"type":"mine","id":"4801144","name":"Big Eagle Mine"},"validFrom":"1950-01-01","validTo":"1982-02-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4801144|L02349|1950-01-01|1982-02-28"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00541","name":"General Electric Company"},"object":{"type":"mine","id":"4801144","name":"Big Eagle Mine"},"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":"4801144|M00541|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00541","name":"General Electric Company"},"object":{"type":"operator","id":"L02349","name":"Pathfinder Mines Corp"},"validFrom":"1950-01-01","validTo":"1982-02-28","current":false,"derived":true,"evidenceMineId":"4801144","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4801144|L02349|1950-01-01|M00541|1950-01-01|112988"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L06150","name":"Pathfinder Mines Corp"},"object":{"type":"mine","id":"4801144","name":"Big Eagle Mine"},"validFrom":"1982-03-01","validTo":"1991-08-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4801144|L06150|1982-03-01|1991-08-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M04906","name":"Cogema S A"},"object":{"type":"mine","id":"4801144","name":"Big Eagle Mine"},"validFrom":"1982-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4801144|M04906|1982-03-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M04906","name":"Cogema S A"},"object":{"type":"operator","id":"L06150","name":"Pathfinder Mines Corp"},"validFrom":"1982-03-01","validTo":"1991-08-18","current":false,"derived":true,"evidenceMineId":"4801144","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4801144|L06150|1982-03-01|M04906|1982-03-01|133188"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09441","name":"Rtz-Cra Group & U S Energy/Crested Corp"},"object":{"type":"mine","id":"4801144","name":"Big Eagle Mine"},"validFrom":"1987-12-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4801144|M09441|1987-12-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12293","name":"Green Mountain Mining Venture"},"object":{"type":"mine","id":"4801144","name":"Big Eagle Mine"},"validFrom":"1991-08-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4801144|L12293|1991-08-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09441","name":"Rtz-Cra Group & U S Energy/Crested Corp"},"object":{"type":"operator","id":"L12293","name":"Green Mountain Mining Venture"},"validFrom":"1991-08-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"4801144","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4801144|L12293|1991-08-19|M09441|1987-12-01|146383"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4801144","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}