{"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":"1519019","name":"No 1"},"operator":{"type":"operator","id":"0087524","name":"North Fork Colleries LLC"},"controller":{"type":"controller","id":"0081993","name":"Keith D  McCoy"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0073824","name":"Traveler Coal, LLC"},"object":{"type":"mine","id":"1519019","name":"No 1"},"validFrom":"2006-07-25","validTo":"2008-03-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519019|0073824|2006-07-25|2008-03-01"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0061869","name":"Kevin  Hall"},"object":{"type":"mine","id":"1519019","name":"No 1"},"validFrom":"2006-07-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519019|0061869|2006-07-25|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0061869","name":"Kevin  Hall"},"object":{"type":"operator","id":"0073824","name":"Traveler Coal, LLC"},"validFrom":"2006-07-25","validTo":"2008-03-01","current":false,"derived":true,"evidenceMineId":"1519019","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519019|0073824|2006-07-25|0061869|2006-07-25|8358"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0087524","name":"North Fork Colleries LLC"},"object":{"type":"mine","id":"1519019","name":"No 1"},"validFrom":"2008-03-02","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519019|0087524|2008-03-02|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05795","name":"Sidney R  Young III"},"object":{"type":"mine","id":"1519019","name":"No 1"},"validFrom":"2008-03-02","validTo":"2008-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519019|C05795|2008-03-02|2008-12-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05795","name":"Sidney R  Young III"},"object":{"type":"operator","id":"0087524","name":"North Fork Colleries LLC"},"validFrom":"2008-03-02","validTo":"2008-12-31","current":false,"derived":true,"evidenceMineId":"1519019","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519019|0087524|2008-03-02|C05795|2008-03-02|69886"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0081993","name":"Keith D  McCoy"},"object":{"type":"mine","id":"1519019","name":"No 1"},"validFrom":"2009-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519019|0081993|2009-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0081993","name":"Keith D  McCoy"},"object":{"type":"operator","id":"0087524","name":"North Fork Colleries LLC"},"validFrom":"2009-01-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1519019","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519019|0087524|2008-03-02|0081993|2009-01-01|13007"}}],"coverage":{"historyRecords":3,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1519019","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"}}