{"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":"1515713","name":"No 2"},"operator":{"type":"operator","id":"P22641","name":"Black Star Mining Company Inc"},"controller":{"type":"controller","id":"C12839","name":"Milford  Compton; Herstel  Ratliff"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19036","name":"Carter Branch Mining Company Inc"},"object":{"type":"mine","id":"1515713","name":"No 2"},"validFrom":"1986-08-01","validTo":"1994-02-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515713|P19036|1986-08-01|1994-02-21"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C07439","name":"Justice George"},"object":{"type":"mine","id":"1515713","name":"No 2"},"validFrom":"1986-08-01","validTo":"1994-02-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515713|C07439|1986-08-01|1994-02-21"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C07439","name":"Justice George"},"object":{"type":"operator","id":"P19036","name":"Carter Branch Mining Company Inc"},"validFrom":"1986-08-01","validTo":"1994-02-21","current":false,"derived":true,"evidenceMineId":"1515713","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515713|P19036|1986-08-01|C07439|1986-08-01|74593"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P22641","name":"Black Star Mining Company Inc"},"object":{"type":"mine","id":"1515713","name":"No 2"},"validFrom":"1994-02-22","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515713|P22641|1994-02-22|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12839","name":"Milford  Compton et al"},"object":{"type":"mine","id":"1515713","name":"No 2"},"validFrom":"1994-02-22","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515713|C12839|1994-02-22|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12839","name":"Milford  Compton et al"},"object":{"type":"operator","id":"P22641","name":"Black Star Mining Company Inc"},"validFrom":"1994-02-22","validTo":null,"current":true,"derived":true,"evidenceMineId":"1515713","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515713|P22641|1994-02-22|C12839|1994-02-22|88018"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12839","name":"Herstel  Ratliff et al"},"object":{"type":"operator","id":"P22641","name":"Black Star Mining Company Inc"},"validFrom":"1994-02-22","validTo":null,"current":true,"derived":true,"evidenceMineId":"1515713","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515713|P22641|1994-02-22|C12839|1994-02-22|88019"}}],"coverage":{"historyRecords":3,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1515713","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"}}