{"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":"3304401","name":"Southern Ohio Aggregates Plant 3"},"operator":{"type":"operator","id":"L02559","name":"Southern Ohio Aggregates"},"controller":{"type":"controller","id":"M08714","name":"James P  Jurgensen"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08714","name":"James P  Jurgensen"},"object":{"type":"mine","id":"3304401","name":"Southern Ohio Aggregates Plant 3"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3304401|M08714|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L02559","name":"Southern Ohio Aggregates"},"object":{"type":"mine","id":"3304401","name":"Southern Ohio Aggregates Plant 3"},"validFrom":"1997-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3304401|L02559|1997-09-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08714","name":"James P  Jurgensen"},"object":{"type":"operator","id":"L02559","name":"Southern Ohio Aggregates"},"validFrom":"1997-09-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3304401","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3304401|L02559|1997-09-01|M08714|1950-01-01|143966"}}],"coverage":{"historyRecords":1,"edgeCount":3,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3304401","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"}}