{"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":"3301357","name":"Columbiana Pits"},"operator":{"type":"operator","id":"P09635","name":"Rosebud Mining Company"},"controller":{"type":"controller","id":"C07485","name":"J Clifford  Forrest III"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P17437","name":"Buckeye Industrial Mining Co."},"object":{"type":"mine","id":"3301357","name":"Columbiana Pits"},"validFrom":"1950-01-01","validTo":"2010-03-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3301357|P17437|1950-01-01|2010-03-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00163","name":"Keller Group Inc"},"object":{"type":"mine","id":"3301357","name":"Columbiana Pits"},"validFrom":"1950-01-01","validTo":"2006-04-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3301357|C00163|1950-01-01|2006-04-02"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00163","name":"Keller Group Inc"},"object":{"type":"operator","id":"P17437","name":"Buckeye Industrial Mining Co."},"validFrom":"1950-01-01","validTo":"2006-04-02","current":false,"derived":true,"evidenceMineId":"3301357","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3301357|P17437|1950-01-01|C00163|1950-01-01|44571"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C07485","name":"J Clifford  Forrest III"},"object":{"type":"mine","id":"3301357","name":"Columbiana Pits"},"validFrom":"1979-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3301357|C07485|1979-08-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0046589","name":"Evergreen Energy Inc"},"object":{"type":"mine","id":"3301357","name":"Columbiana Pits"},"validFrom":"2006-04-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3301357|0046589|2006-04-03|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0046589","name":"Evergreen Energy Inc"},"object":{"type":"operator","id":"P17437","name":"Buckeye Industrial Mining Co."},"validFrom":"2006-04-03","validTo":"2010-03-31","current":false,"derived":true,"evidenceMineId":"3301357","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3301357|P17437|1950-01-01|0046589|2006-04-03|5673"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P09635","name":"Rosebud Mining Company"},"object":{"type":"mine","id":"3301357","name":"Columbiana Pits"},"validFrom":"2010-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3301357|P09635|2010-04-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C07485","name":"J Clifford  Forrest III"},"object":{"type":"operator","id":"P09635","name":"Rosebud Mining Company"},"validFrom":"2010-04-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3301357","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3301357|P09635|2010-04-01|C07485|1979-08-01|74733"}}],"coverage":{"historyRecords":3,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3301357","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"}}