{"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":"3608199","name":"Mine No 2"},"operator":{"type":"operator","id":"P23483","name":"Wv H & H Enterprises Inc"},"controller":{"type":"controller","id":"C15437","name":"James E  Hatfield; J Todd  Hatfield"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C14336","name":"Immonen David J"},"object":{"type":"mine","id":"3608199","name":"Mine No 2"},"validFrom":"1990-05-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3608199|C14336|1990-05-21|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P21333","name":"Black Rock Exploration Company Inc"},"object":{"type":"mine","id":"3608199","name":"Mine No 2"},"validFrom":"1991-04-01","validTo":"1996-07-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3608199|P21333|1991-04-01|1996-07-23"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C14336","name":"Immonen David J"},"object":{"type":"operator","id":"P21333","name":"Black Rock Exploration Company Inc"},"validFrom":"1991-04-01","validTo":"1996-07-23","current":false,"derived":true,"evidenceMineId":"3608199","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3608199|P21333|1991-04-01|C14336|1990-05-21|92543"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23483","name":"Wv H & H Enterprises Inc"},"object":{"type":"mine","id":"3608199","name":"Mine No 2"},"validFrom":"1996-07-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3608199|P23483|1996-07-24|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15437","name":"James E  Hatfield et al"},"object":{"type":"mine","id":"3608199","name":"Mine No 2"},"validFrom":"1996-07-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3608199|C15437|1996-07-24|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15437","name":"James E  Hatfield et al"},"object":{"type":"operator","id":"P23483","name":"Wv H & H Enterprises Inc"},"validFrom":"1996-07-24","validTo":null,"current":true,"derived":true,"evidenceMineId":"3608199","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3608199|P23483|1996-07-24|C15437|1996-07-24|95609"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15437","name":"J Todd  Hatfield et al"},"object":{"type":"operator","id":"P23483","name":"Wv H & H Enterprises Inc"},"validFrom":"1996-07-24","validTo":null,"current":true,"derived":true,"evidenceMineId":"3608199","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3608199|P23483|1996-07-24|C15437|1996-07-24|95610"}}],"coverage":{"historyRecords":3,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3608199","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"}}