{"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":"0301423","name":"Hall'S Oilstone Mill"},"operator":{"type":"operator","id":"0129922","name":"RH Preyda Company"},"controller":{"type":"controller","id":"0110493","name":"Oscar  Cozzini"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L33995","name":"Hall'S Arkansas Oilstone Inc"},"object":{"type":"mine","id":"0301423","name":"Hall'S Oilstone Mill"},"validFrom":"1979-01-01","validTo":"2013-05-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0301423|L33995|1979-01-01|2013-05-21"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M33995","name":"Hall Richard L"},"object":{"type":"mine","id":"0301423","name":"Hall'S Oilstone Mill"},"validFrom":"1979-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0301423|M33995|1979-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M33995","name":"Hall Richard L"},"object":{"type":"operator","id":"L33995","name":"Hall'S Arkansas Oilstone Inc"},"validFrom":"1979-01-01","validTo":"2013-05-21","current":false,"derived":true,"evidenceMineId":"0301423","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0301423|L33995|1979-01-01|M33995|1979-01-01|162705"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0129922","name":"RH Preyda Company"},"object":{"type":"mine","id":"0301423","name":"Hall'S Oilstone Mill"},"validFrom":"2013-05-22","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0301423|0129922|2013-05-22|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0110493","name":"Oscar  Cozzini"},"object":{"type":"mine","id":"0301423","name":"Hall'S Oilstone Mill"},"validFrom":"2013-05-22","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0301423|0110493|2013-05-22|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0110493","name":"Oscar  Cozzini"},"object":{"type":"operator","id":"0129922","name":"RH Preyda Company"},"validFrom":"2013-05-22","validTo":null,"current":true,"derived":true,"evidenceMineId":"0301423","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0301423|0129922|2013-05-22|0110493|2013-05-22|20234"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0301423","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"}}