{"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":"0503973","name":"Bullger Basin"},"operator":{"type":"operator","id":"0132253","name":"Eagle Peaks Mining LLC"},"controller":{"type":"controller","id":"0112441","name":"Stephanie  Tunstall; Kenneth  Tunstall"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L37164","name":"Penn Mountain Mining"},"object":{"type":"mine","id":"0503973","name":"Bullger Basin"},"validFrom":"1984-07-01","validTo":"2014-02-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503973|L37164|1984-07-01|2014-02-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M37164","name":"Penn Mountain Mining"},"object":{"type":"mine","id":"0503973","name":"Bullger Basin"},"validFrom":"1984-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503973|M37164|1984-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M37164","name":"Penn Mountain Mining"},"object":{"type":"operator","id":"L37164","name":"Penn Mountain Mining"},"validFrom":"1984-07-01","validTo":"2014-02-18","current":false,"derived":true,"evidenceMineId":"0503973","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503973|L37164|1984-07-01|M37164|1984-07-01|166383"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0132253","name":"Eagle Peaks Mining LLC"},"object":{"type":"mine","id":"0503973","name":"Bullger Basin"},"validFrom":"2014-02-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503973|0132253|2014-02-19|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0112441","name":"Kenneth  Tunstall et al"},"object":{"type":"mine","id":"0503973","name":"Bullger Basin"},"validFrom":"2014-02-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503973|0112441|2014-02-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0112441","name":"Kenneth  Tunstall et al"},"object":{"type":"operator","id":"0132253","name":"Eagle Peaks Mining LLC"},"validFrom":"2014-02-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"0503973","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503973|0132253|2014-02-19|0112441|2014-02-19|20914"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0112441","name":"Stephanie  Tunstall et al"},"object":{"type":"operator","id":"0132253","name":"Eagle Peaks Mining LLC"},"validFrom":"2014-02-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"0503973","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503973|0132253|2014-02-19|0112441|2014-02-19|20915"}}],"coverage":{"historyRecords":3,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0503973","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"}}