{"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":"3610272","name":"Craighead Mine"},"operator":{"type":"operator","id":"0094965","name":"Heritage Coal & Natural Resources LLC"},"controller":{"type":"controller","id":"0182320","name":"KTRV LLC"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"0079953","name":"Angela  Svonavec"},"object":{"type":"mine","id":"3610272","name":"Craighead Mine"},"validFrom":"2008-09-03","validTo":"2024-02-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3610272|0079953|2008-09-03|2024-02-04"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0094965","name":"Heritage Coal & Natural Resources LLC"},"object":{"type":"mine","id":"3610272","name":"Craighead Mine"},"validFrom":"2019-01-08","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3610272|0094965|2019-01-08|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0079953","name":"Angela  Svonavec"},"object":{"type":"operator","id":"0094965","name":"Heritage Coal & Natural Resources LLC"},"validFrom":"2019-01-08","validTo":"2024-02-04","current":false,"derived":true,"evidenceMineId":"3610272","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3610272|0094965|2019-01-08|0079953|2008-09-03|12567"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0182320","name":"KTRV LLC"},"object":{"type":"mine","id":"3610272","name":"Craighead Mine"},"validFrom":"2024-02-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3610272|0182320|2024-02-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0182320","name":"KTRV LLC"},"object":{"type":"operator","id":"0094965","name":"Heritage Coal & Natural Resources LLC"},"validFrom":"2024-02-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"3610272","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3610272|0094965|2019-01-08|0182320|2024-02-05|38925"}}],"coverage":{"historyRecords":2,"edgeCount":5,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3610272","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"}}