{"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":"1515865","name":"Mine No 1"},"operator":{"type":"operator","id":"P19783","name":"Wolf Branch Collieries Inc"},"controller":{"type":"controller","id":"C08213","name":"Ronnie  Thacker; Freddy  Thacker"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P18347","name":"Wolf Branch Collieries Inc"},"object":{"type":"mine","id":"1515865","name":"Mine No 1"},"validFrom":"1986-12-01","validTo":"1988-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515865|P18347|1986-12-01|1988-05-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C10119","name":"Lowe Moses"},"object":{"type":"mine","id":"1515865","name":"Mine No 1"},"validFrom":"1986-12-01","validTo":"1988-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515865|C10119|1986-12-01|1988-05-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C10119","name":"Lowe Moses"},"object":{"type":"operator","id":"P18347","name":"Wolf Branch Collieries Inc"},"validFrom":"1986-12-01","validTo":"1988-05-31","current":false,"derived":true,"evidenceMineId":"1515865","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515865|P18347|1986-12-01|C10119|1986-12-01|81265"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19783","name":"Wolf Branch Collieries Inc"},"object":{"type":"mine","id":"1515865","name":"Mine No 1"},"validFrom":"1988-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515865|P19783|1988-06-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C08213","name":"Freddy  Thacker et al"},"object":{"type":"mine","id":"1515865","name":"Mine No 1"},"validFrom":"1988-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515865|C08213|1988-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C08213","name":"Freddy  Thacker et al"},"object":{"type":"operator","id":"P19783","name":"Wolf Branch Collieries Inc"},"validFrom":"1988-06-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1515865","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515865|P19783|1988-06-01|C08213|1988-06-01|76766"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C08213","name":"Ronnie  Thacker et al"},"object":{"type":"operator","id":"P19783","name":"Wolf Branch Collieries Inc"},"validFrom":"1988-06-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1515865","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515865|P19783|1988-06-01|C08213|1988-06-01|76767"}}],"coverage":{"historyRecords":3,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1515865","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"}}