{"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":"0101761","name":"Fayette County Mine No 1"},"operator":{"type":"operator","id":"P08069","name":"Central Mining Inc"},"controller":{"type":"controller","id":"C06504","name":"Douglas Terry R"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P06800","name":"Central Mining Inc"},"object":{"type":"mine","id":"0101761","name":"Fayette County Mine No 1"},"validFrom":"1977-07-01","validTo":"1978-04-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0101761|P06800|1977-07-01|1978-04-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C03401","name":"A J  Taft"},"object":{"type":"mine","id":"0101761","name":"Fayette County Mine No 1"},"validFrom":"1977-07-01","validTo":"1978-04-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0101761|C03401|1977-07-01|1978-04-18"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C03401","name":"A J  Taft"},"object":{"type":"operator","id":"P06800","name":"Central Mining Inc"},"validFrom":"1977-07-01","validTo":"1978-04-18","current":false,"derived":true,"evidenceMineId":"0101761","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0101761|P06800|1977-07-01|C03401|1977-07-01|62758"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P08069","name":"Central Mining Inc"},"object":{"type":"mine","id":"0101761","name":"Fayette County Mine No 1"},"validFrom":"1978-04-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0101761|P08069|1978-04-19|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C06504","name":"Douglas Terry R"},"object":{"type":"mine","id":"0101761","name":"Fayette County Mine No 1"},"validFrom":"1978-04-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0101761|C06504|1978-04-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C06504","name":"Douglas Terry R"},"object":{"type":"operator","id":"P08069","name":"Central Mining Inc"},"validFrom":"1978-04-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"0101761","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0101761|P08069|1978-04-19|C06504|1978-04-19|71996"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0101761","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"}}