{"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":"0503017","name":"Eagle No 9 Mine"},"operator":{"type":"operator","id":"P10210","name":"Empire Energy Corp"},"controller":{"type":"controller","id":"C06148","name":"Cyprus Amax Minerals Company"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01263","name":"Houston Natural Gas Corp"},"object":{"type":"mine","id":"0503017","name":"Eagle No 9 Mine"},"validFrom":"1976-07-01","validTo":"1980-04-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503017|C01263|1976-07-01|1980-04-02"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P01688","name":"Empire Energy Corp"},"object":{"type":"mine","id":"0503017","name":"Eagle No 9 Mine"},"validFrom":"1977-01-01","validTo":"1980-03-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503017|P01688|1977-01-01|1980-03-14"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01263","name":"Houston Natural Gas Corp"},"object":{"type":"operator","id":"P01688","name":"Empire Energy Corp"},"validFrom":"1977-01-01","validTo":"1980-03-14","current":false,"derived":true,"evidenceMineId":"0503017","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503017|P01688|1977-01-01|C01263|1976-07-01|53166"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P10210","name":"Empire Energy Corp"},"object":{"type":"mine","id":"0503017","name":"Eagle No 9 Mine"},"validFrom":"1980-03-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503017|P10210|1980-03-15|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C06148","name":"Cyprus Amax Minerals Company"},"object":{"type":"mine","id":"0503017","name":"Eagle No 9 Mine"},"validFrom":"1980-03-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503017|C06148|1980-03-15|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C06148","name":"Cyprus Amax Minerals Company"},"object":{"type":"operator","id":"P10210","name":"Empire Energy Corp"},"validFrom":"1980-03-15","validTo":null,"current":true,"derived":true,"evidenceMineId":"0503017","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503017|P10210|1980-03-15|C06148|1980-03-15|70919"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0503017","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"}}