{"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":"0505031","name":"O'Rourke Pit at South Fork"},"operator":{"type":"operator","id":"0151093","name":"O'Rourke Excavating"},"controller":{"type":"controller","id":"0115461","name":"Thomas  O'Rourke"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0135633","name":"O'Rourke Excavating"},"object":{"type":"mine","id":"0505031","name":"O'Rourke Pit at South Fork"},"validFrom":"2014-09-11","validTo":"2017-05-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0505031|0135633|2014-09-11|2017-05-09"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0115461","name":"Thomas  O'Rourke"},"object":{"type":"mine","id":"0505031","name":"O'Rourke Pit at South Fork"},"validFrom":"2014-09-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0505031|0115461|2014-09-11|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0115461","name":"Thomas  O'Rourke"},"object":{"type":"operator","id":"0135633","name":"O'Rourke Excavating"},"validFrom":"2014-09-11","validTo":"2017-05-09","current":false,"derived":true,"evidenceMineId":"0505031","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0505031|0135633|2014-09-11|0115461|2014-09-11|21738"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0151093","name":"O'Rourke Excavating"},"object":{"type":"mine","id":"0505031","name":"O'Rourke Pit at South Fork"},"validFrom":"2017-05-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0505031|0151093|2017-05-10|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0115461","name":"Thomas  O'Rourke"},"object":{"type":"mine","id":"0505031","name":"O'Rourke Pit at South Fork"},"validFrom":"2017-05-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0505031|0115461|2017-05-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0115461","name":"Thomas  O'Rourke"},"object":{"type":"operator","id":"0151093","name":"O'Rourke Excavating"},"validFrom":"2017-05-10","validTo":null,"current":true,"derived":true,"evidenceMineId":"0505031","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0505031|0151093|2017-05-10|0115461|2017-05-10|21739"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0505031","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"}}