{"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":"2026-10-17T05:35:58.500035+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":"1202460","name":"Ace In The Hole"},"operator":{"type":"operator","id":"0051576","name":"Sunrise Coal, LLC."},"controller":{"type":"controller","id":"0141083","name":"Hallador Energy Company"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12185","name":"Ronald E  Laswell et al"},"object":{"type":"mine","id":"1202460","name":"Ace In The Hole"},"validFrom":"2003-06-04","validTo":"2012-04-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202460|C12185|2003-06-04|2012-04-25"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0104017","name":"Brent K  Bilsland et al"},"object":{"type":"mine","id":"1202460","name":"Ace In The Hole"},"validFrom":"2012-04-26","validTo":"2018-05-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202460|0104017|2012-04-26|2018-05-10"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0051576","name":"Sunrise Coal, LLC."},"object":{"type":"mine","id":"1202460","name":"Ace In The Hole"},"validFrom":"2012-11-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202460|0051576|2012-11-21|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0104017","name":"Brent K  Bilsland et al"},"object":{"type":"operator","id":"0051576","name":"Sunrise Coal, LLC."},"validFrom":"2012-11-21","validTo":"2018-05-10","current":false,"derived":true,"evidenceMineId":"1202460","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202460|0051576|2012-11-21|0104017|2012-04-26|17966"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12185","name":"Ronald E  Laswell et al"},"object":{"type":"operator","id":"0051576","name":"Sunrise Coal, LLC."},"validFrom":"2012-11-21","validTo":"2012-04-25","current":false,"derived":true,"evidenceMineId":"1202460","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202460|0051576|2012-11-21|C12185|2003-06-04|86348"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0141083","name":"Hallador Energy Company"},"object":{"type":"mine","id":"1202460","name":"Ace In The Hole"},"validFrom":"2018-05-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202460|0141083|2018-05-11|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0141083","name":"Hallador Energy Company"},"object":{"type":"operator","id":"0051576","name":"Sunrise Coal, LLC."},"validFrom":"2018-05-11","validTo":null,"current":true,"derived":true,"evidenceMineId":"1202460","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202460|0051576|2012-11-21|0141083|2018-05-11|28549"}}],"coverage":{"historyRecords":3,"edgeCount":7,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1202460","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}