{"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":"4607231","name":"No 1"},"operator":{"type":"operator","id":"P21384","name":"Big Sandy Reclamation Inc"},"controller":{"type":"controller","id":"C10676","name":"Sammons James"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12366","name":"Clevenger Mark"},"object":{"type":"mine","id":"4607231","name":"No 1"},"validFrom":"1986-04-14","validTo":"1993-01-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607231|C12366|1986-04-14|1993-01-14"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P17621","name":"V & W Dredging"},"object":{"type":"mine","id":"4607231","name":"No 1"},"validFrom":"1986-11-01","validTo":"1993-01-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607231|P17621|1986-11-01|1993-01-14"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12366","name":"Clevenger Mark"},"object":{"type":"operator","id":"P17621","name":"V & W Dredging"},"validFrom":"1986-11-01","validTo":"1993-01-14","current":false,"derived":true,"evidenceMineId":"4607231","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607231|P17621|1986-11-01|C12366|1986-04-14|86740"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C10676","name":"Sammons James Et Al"},"object":{"type":"mine","id":"4607231","name":"No 1"},"validFrom":"1991-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607231|C10676|1991-04-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P21384","name":"Big Sandy Reclamation Inc"},"object":{"type":"mine","id":"4607231","name":"No 1"},"validFrom":"1993-01-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607231|P21384|1993-01-15|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C10676","name":"Sammons James Et Al"},"object":{"type":"operator","id":"P21384","name":"Big Sandy Reclamation Inc"},"validFrom":"1993-01-15","validTo":null,"current":true,"derived":true,"evidenceMineId":"4607231","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607231|P21384|1993-01-15|C10676|1991-04-01|82539"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4607231","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"}}