{"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":"1511441","name":"221"},"operator":{"type":"operator","id":"P10732","name":"K & G Coal Company Inc"},"controller":{"type":"controller","id":"C08140","name":"Knuckles Claude"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P09938","name":"D N L Coal Company Inc"},"object":{"type":"mine","id":"1511441","name":"221"},"validFrom":"1978-07-01","validTo":"1980-10-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1511441|P09938|1978-07-01|1980-10-02"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C06041","name":"Partin Wayland Et Al"},"object":{"type":"mine","id":"1511441","name":"221"},"validFrom":"1978-07-01","validTo":"1980-10-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1511441|C06041|1978-07-01|1980-10-02"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C06041","name":"Partin Wayland Et Al"},"object":{"type":"operator","id":"P09938","name":"D N L Coal Company Inc"},"validFrom":"1978-07-01","validTo":"1980-10-02","current":false,"derived":true,"evidenceMineId":"1511441","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1511441|P09938|1978-07-01|C06041|1978-07-01|70627"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C08140","name":"Knuckles Claude"},"object":{"type":"mine","id":"1511441","name":"221"},"validFrom":"1980-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1511441|C08140|1980-06-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P10732","name":"K & G Coal Company Inc"},"object":{"type":"mine","id":"1511441","name":"221"},"validFrom":"1980-10-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1511441|P10732|1980-10-03|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C08140","name":"Knuckles Claude"},"object":{"type":"operator","id":"P10732","name":"K & G Coal Company Inc"},"validFrom":"1980-10-03","validTo":null,"current":true,"derived":true,"evidenceMineId":"1511441","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1511441|P10732|1980-10-03|C08140|1980-06-01|76535"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1511441","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"}}