{"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":"5001315","name":"Valdez Creek Mine"},"operator":{"type":"operator","id":"L09541","name":"Cambior Alaska Inc"},"controller":{"type":"controller","id":"M07485","name":"Cambior Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07262","name":"Denali Mining Company"},"object":{"type":"mine","id":"5001315","name":"Valdez Creek Mine"},"validFrom":"1980-04-01","validTo":"1984-05-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5001315|L07262|1980-04-01|1984-05-21"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05781","name":"Ames C B"},"object":{"type":"mine","id":"5001315","name":"Valdez Creek Mine"},"validFrom":"1980-04-01","validTo":"1984-05-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5001315|M05781|1980-04-01|1984-05-21"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05781","name":"Ames C B"},"object":{"type":"operator","id":"L07262","name":"Denali Mining Company"},"validFrom":"1980-04-01","validTo":"1984-05-21","current":false,"derived":true,"evidenceMineId":"5001315","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5001315|L07262|1980-04-01|M05781|1980-04-01|135406"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07263","name":"Sum Resources Inc"},"object":{"type":"mine","id":"5001315","name":"Valdez Creek Mine"},"validFrom":"1984-05-22","validTo":"1984-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5001315|L07263|1984-05-22|1984-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05782","name":"Sullivan Mines Inc"},"object":{"type":"mine","id":"5001315","name":"Valdez Creek Mine"},"validFrom":"1984-05-22","validTo":"1984-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5001315|M05782|1984-05-22|1984-12-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05782","name":"Sullivan Mines Inc"},"object":{"type":"operator","id":"L07263","name":"Sum Resources Inc"},"validFrom":"1984-05-22","validTo":"1984-12-31","current":false,"derived":true,"evidenceMineId":"5001315","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5001315|L07263|1984-05-22|M05782|1984-05-22|135407"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07739","name":"Valdez Creek Mining Company Inc"},"object":{"type":"mine","id":"5001315","name":"Valdez Creek Mine"},"validFrom":"1985-01-01","validTo":"1985-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5001315|L07739|1985-01-01|1985-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06149","name":"Gauthier F"},"object":{"type":"mine","id":"5001315","name":"Valdez Creek Mine"},"validFrom":"1985-01-01","validTo":"1985-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5001315|M06149|1985-01-01|1985-12-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06149","name":"Gauthier F"},"object":{"type":"operator","id":"L07739","name":"Valdez Creek Mining Company Inc"},"validFrom":"1985-01-01","validTo":"1985-12-31","current":false,"derived":true,"evidenceMineId":"5001315","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5001315|L07739|1985-01-01|M06149|1985-01-01|136353"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L08805","name":"Valdez Creek Mining Company Inc"},"object":{"type":"mine","id":"5001315","name":"Valdez Creek Mine"},"validFrom":"1986-01-01","validTo":"1987-06-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5001315|L08805|1986-01-01|1987-06-16"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06964","name":"Shultz Don H"},"object":{"type":"mine","id":"5001315","name":"Valdez Creek Mine"},"validFrom":"1986-01-01","validTo":"1987-06-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5001315|M06964|1986-01-01|1987-06-16"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06964","name":"Shultz Don H"},"object":{"type":"operator","id":"L08805","name":"Valdez Creek Mining Company Inc"},"validFrom":"1986-01-01","validTo":"1987-06-16","current":false,"derived":true,"evidenceMineId":"5001315","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5001315|L08805|1986-01-01|M06964|1986-01-01|139729"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09541","name":"Cambior Alaska Inc"},"object":{"type":"mine","id":"5001315","name":"Valdez Creek Mine"},"validFrom":"1987-06-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5001315|L09541|1987-06-17|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07485","name":"Cambior Inc"},"object":{"type":"mine","id":"5001315","name":"Valdez Creek Mine"},"validFrom":"1987-06-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5001315|M07485|1987-06-17|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07485","name":"Cambior Inc"},"object":{"type":"operator","id":"L09541","name":"Cambior Alaska Inc"},"validFrom":"1987-06-17","validTo":null,"current":true,"derived":true,"evidenceMineId":"5001315","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5001315|L09541|1987-06-17|M07485|1987-06-17|141413"}}],"coverage":{"historyRecords":5,"edgeCount":15,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"5001315","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"}}