{"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":"4405459","name":"No 1"},"operator":{"type":"operator","id":"P11385","name":"Sutherland Coal Company"},"controller":{"type":"controller","id":"C04077","name":"Sutherland Kermit R"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C06911","name":"Mitchell George & Billy Et Al"},"object":{"type":"mine","id":"4405459","name":"No 1"},"validFrom":"1978-09-12","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405459|C06911|1978-09-12|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P08688","name":"Triple M Coal Company"},"object":{"type":"mine","id":"4405459","name":"No 1"},"validFrom":"1980-07-01","validTo":"1981-02-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405459|P08688|1980-07-01|1981-02-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C06911","name":"Mitchell George & Billy Et Al"},"object":{"type":"operator","id":"P08688","name":"Triple M Coal Company"},"validFrom":"1980-07-01","validTo":"1981-02-03","current":false,"derived":true,"evidenceMineId":"4405459","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405459|P08688|1980-07-01|C06911|1978-09-12|73188"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P11385","name":"Sutherland Coal Company"},"object":{"type":"mine","id":"4405459","name":"No 1"},"validFrom":"1981-02-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405459|P11385|1981-02-04|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C04077","name":"Sutherland Kermit R"},"object":{"type":"mine","id":"4405459","name":"No 1"},"validFrom":"1981-02-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405459|C04077|1981-02-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C04077","name":"Sutherland Kermit R"},"object":{"type":"operator","id":"P11385","name":"Sutherland Coal Company"},"validFrom":"1981-02-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"4405459","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405459|P11385|1981-02-04|C04077|1981-02-04|64707"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4405459","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"}}