{"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":"4801820","name":"Youngs Creek Mine"},"operator":{"type":"operator","id":"0131153","name":"Navajo Transitional Energy Company, LLC"},"controller":{"type":"controller","id":"0164461","name":"Navajo Transitional Energy Company LLC"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"0111621","name":"Navajo Nation"},"object":{"type":"mine","id":"4801820","name":"Youngs Creek Mine"},"validFrom":"2013-12-31","validTo":"2019-10-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4801820|0111621|2013-12-31|2019-10-24"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0160193","name":"Youngs Creek Mining Company, LLC"},"object":{"type":"mine","id":"4801820","name":"Youngs Creek Mine"},"validFrom":"2018-10-25","validTo":"2019-10-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4801820|0160193|2018-10-25|2019-10-24"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0090013","name":"Cloud Peak Energy Resources LLC"},"object":{"type":"mine","id":"4801820","name":"Youngs Creek Mine"},"validFrom":"2018-10-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4801820|0090013|2018-10-25|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0090013","name":"Cloud Peak Energy Resources LLC"},"object":{"type":"operator","id":"0160193","name":"Youngs Creek Mining Company, LLC"},"validFrom":"2018-10-25","validTo":"2019-10-24","current":false,"derived":true,"evidenceMineId":"4801820","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4801820|0160193|2018-10-25|0090013|2018-10-25|14470"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0131153","name":"Navajo Transitional Energy Company, LLC"},"object":{"type":"mine","id":"4801820","name":"Youngs Creek Mine"},"validFrom":"2019-10-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4801820|0131153|2019-10-25|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0111621","name":"Navajo Nation"},"object":{"type":"operator","id":"0131153","name":"Navajo Transitional Energy Company, LLC"},"validFrom":"2019-10-25","validTo":"2019-10-24","current":false,"derived":true,"evidenceMineId":"4801820","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4801820|0131153|2019-10-25|0111621|2013-12-31|20514"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0164461","name":"Navajo Transitional Energy Company LLC"},"object":{"type":"mine","id":"4801820","name":"Youngs Creek Mine"},"validFrom":"2019-10-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4801820|0164461|2019-10-25|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0164461","name":"Navajo Transitional Energy Company LLC"},"object":{"type":"operator","id":"0131153","name":"Navajo Transitional Energy Company, LLC"},"validFrom":"2019-10-25","validTo":null,"current":true,"derived":true,"evidenceMineId":"4801820","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4801820|0131153|2019-10-25|0164461|2019-10-25|34414"}}],"coverage":{"historyRecords":3,"edgeCount":8,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4801820","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"}}