{"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":"4407426","name":"Mill Creek No. 2"},"operator":{"type":"operator","id":"0183033","name":"Appalachian Development LLC"},"controller":{"type":"controller","id":"0178600","name":"Bernie  Mason; David  Ison"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"0169481","name":"Bernie  Mason et al"},"object":{"type":"mine","id":"4407426","name":"Mill Creek No. 2"},"validFrom":"2022-04-17","validTo":"2023-08-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407426|0169481|2022-04-17|2023-08-14"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0183033","name":"Appalachian Development LLC"},"object":{"type":"mine","id":"4407426","name":"Mill Creek No. 2"},"validFrom":"2023-01-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407426|0183033|2023-01-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0169481","name":"Bernie  Mason et al"},"object":{"type":"operator","id":"0183033","name":"Appalachian Development LLC"},"validFrom":"2023-01-30","validTo":"2023-08-14","current":false,"derived":true,"evidenceMineId":"4407426","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407426|0183033|2023-01-30|0169481|2022-04-17|35786"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0169481","name":"Gary  Johnson et al"},"object":{"type":"operator","id":"0183033","name":"Appalachian Development LLC"},"validFrom":"2023-01-30","validTo":"2023-08-14","current":false,"derived":true,"evidenceMineId":"4407426","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407426|0183033|2023-01-30|0169481|2022-04-17|35787"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0178600","name":"Bernie  Mason et al"},"object":{"type":"mine","id":"4407426","name":"Mill Creek No. 2"},"validFrom":"2023-08-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407426|0178600|2023-08-15|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0178600","name":"Bernie  Mason et al"},"object":{"type":"operator","id":"0183033","name":"Appalachian Development LLC"},"validFrom":"2023-08-15","validTo":null,"current":true,"derived":true,"evidenceMineId":"4407426","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407426|0183033|2023-01-30|0178600|2023-08-15|38235"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0178600","name":"David  Ison et al"},"object":{"type":"operator","id":"0183033","name":"Appalachian Development LLC"},"validFrom":"2023-08-15","validTo":null,"current":true,"derived":true,"evidenceMineId":"4407426","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407426|0183033|2023-01-30|0178600|2023-08-15|38236"}}],"coverage":{"historyRecords":4,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4407426","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"}}