{"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":"2026-10-17T05:35:58.500035+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":"1514133","name":"No 1 Surface"},"operator":{"type":"operator","id":"P15580","name":"Magnum Energy"},"controller":{"type":"controller","id":"C11169","name":"Witten William D & Blake Ratliff"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01148","name":"MAPCO Inc"},"object":{"type":"mine","id":"1514133","name":"No 1 Surface"},"validFrom":"1978-02-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1514133|C01148|1978-02-24|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P07942","name":"Toptiki Coal Corp"},"object":{"type":"mine","id":"1514133","name":"No 1 Surface"},"validFrom":"1983-07-01","validTo":"1984-06-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1514133|P07942|1983-07-01|1984-06-20"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01148","name":"MAPCO Inc"},"object":{"type":"operator","id":"P07942","name":"Toptiki Coal Corp"},"validFrom":"1983-07-01","validTo":"1984-06-20","current":false,"derived":true,"evidenceMineId":"1514133","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1514133|P07942|1983-07-01|C01148|1978-02-24|52597"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P15580","name":"Magnum Energy"},"object":{"type":"mine","id":"1514133","name":"No 1 Surface"},"validFrom":"1984-06-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1514133|P15580|1984-06-21|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C11169","name":"Witten William D & Blake Ratliff"},"object":{"type":"mine","id":"1514133","name":"No 1 Surface"},"validFrom":"1984-06-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1514133|C11169|1984-06-21|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C11169","name":"Witten William D & Blake Ratliff"},"object":{"type":"operator","id":"P15580","name":"Magnum Energy"},"validFrom":"1984-06-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"1514133","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1514133|P15580|1984-06-21|C11169|1984-06-21|83824"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1514133","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}