{"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":"1508932","name":"No 1 Mine"},"operator":{"type":"operator","id":"P03144","name":"Cedar Mining Company"},"controller":{"type":"controller","id":"C02126","name":"Hall Charles D"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00271","name":"Justice Joseph A"},"object":{"type":"mine","id":"1508932","name":"No 1 Mine"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508932|C00271|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P00357","name":"Cedar Mining Company Inc"},"object":{"type":"mine","id":"1508932","name":"No 1 Mine"},"validFrom":"1975-01-01","validTo":"1976-02-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508932|P00357|1975-01-01|1976-02-25"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00271","name":"Justice Joseph A"},"object":{"type":"operator","id":"P00357","name":"Cedar Mining Company Inc"},"validFrom":"1975-01-01","validTo":"1976-02-25","current":false,"derived":true,"evidenceMineId":"1508932","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508932|P00357|1975-01-01|C00271|1950-01-01|45647"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P03144","name":"Cedar Mining Company"},"object":{"type":"mine","id":"1508932","name":"No 1 Mine"},"validFrom":"1976-02-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508932|P03144|1976-02-26|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02126","name":"Hall Charles D"},"object":{"type":"mine","id":"1508932","name":"No 1 Mine"},"validFrom":"1976-02-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508932|C02126|1976-02-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02126","name":"Hall Charles D"},"object":{"type":"operator","id":"P03144","name":"Cedar Mining Company"},"validFrom":"1976-02-26","validTo":null,"current":true,"derived":true,"evidenceMineId":"1508932","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508932|P03144|1976-02-26|C02126|1976-02-26|57548"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1508932","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"}}