{"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":"1502520","name":"No 1 Mine"},"operator":{"type":"operator","id":"P06577","name":"Apache Mining Company"},"controller":{"type":"controller","id":"C05460","name":"Reed Rabon"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P12939","name":"U A C Industries"},"object":{"type":"mine","id":"1502520","name":"No 1 Mine"},"validFrom":"1950-01-01","validTo":"1972-01-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502520|P12939|1950-01-01|1972-01-08"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C09525","name":"Browning Grey"},"object":{"type":"mine","id":"1502520","name":"No 1 Mine"},"validFrom":"1950-01-01","validTo":"1972-01-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502520|C09525|1950-01-01|1972-01-08"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C09525","name":"Browning Grey"},"object":{"type":"operator","id":"P12939","name":"U A C Industries"},"validFrom":"1950-01-01","validTo":"1972-01-08","current":false,"derived":true,"evidenceMineId":"1502520","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502520|P12939|1950-01-01|C09525|1950-01-01|79913"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P12934","name":"Point Mining Company"},"object":{"type":"mine","id":"1502520","name":"No 1 Mine"},"validFrom":"1972-01-09","validTo":"1973-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502520|P12934|1972-01-09|1973-05-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00814","name":"Potter Hobert E"},"object":{"type":"mine","id":"1502520","name":"No 1 Mine"},"validFrom":"1972-01-09","validTo":"1973-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502520|C00814|1972-01-09|1973-05-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00814","name":"Potter Hobert E"},"object":{"type":"operator","id":"P12934","name":"Point Mining Company"},"validFrom":"1972-01-09","validTo":"1973-05-31","current":false,"derived":true,"evidenceMineId":"1502520","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502520|P12934|1972-01-09|C00814|1972-01-09|50220"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P06577","name":"Apache Mining Company"},"object":{"type":"mine","id":"1502520","name":"No 1 Mine"},"validFrom":"1973-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502520|P06577|1973-06-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05460","name":"Reed Rabon"},"object":{"type":"mine","id":"1502520","name":"No 1 Mine"},"validFrom":"1973-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502520|C05460|1973-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05460","name":"Reed Rabon"},"object":{"type":"operator","id":"P06577","name":"Apache Mining Company"},"validFrom":"1973-06-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1502520","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502520|P06577|1973-06-01|C05460|1973-06-01|68881"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1502520","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"}}