{"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":"2026-10-18T09:31:49.615908+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":"0301968","name":"South Yell Country Gravel Co"},"operator":{"type":"operator","id":"0091905","name":"South Yell County Gravel Co"},"controller":{"type":"controller","id":"0169040","name":"Boyce E Page"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0091905","name":"South Yell County Gravel Co"},"object":{"type":"mine","id":"0301968","name":"South Yell Country Gravel Co"},"validFrom":"2008-06-12","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0301968|0091905|2008-06-12|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0077093","name":"James  Mitchell"},"object":{"type":"mine","id":"0301968","name":"South Yell Country Gravel Co"},"validFrom":"2008-06-12","validTo":"2022-05-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0301968|0077093|2008-06-12|2022-05-10"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0077093","name":"James  Mitchell"},"object":{"type":"operator","id":"0091905","name":"South Yell County Gravel Co"},"validFrom":"2008-06-12","validTo":"2022-05-10","current":false,"derived":true,"evidenceMineId":"0301968","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0301968|0091905|2008-06-12|0077093|2008-06-12|12084"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0169040","name":"Boyce E Page"},"object":{"type":"mine","id":"0301968","name":"South Yell Country Gravel Co"},"validFrom":"2022-05-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0301968|0169040|2022-05-11|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0169040","name":"Boyce E Page"},"object":{"type":"operator","id":"0091905","name":"South Yell County Gravel Co"},"validFrom":"2022-05-11","validTo":null,"current":true,"derived":true,"evidenceMineId":"0301968","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0301968|0091905|2008-06-12|0169040|2022-05-11|35712"}}],"coverage":{"historyRecords":2,"edgeCount":5,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0301968","dataSource":"postgres","snapshotId":"2026-10-18T09:31:49.615908+00:00","completedAt":"2026-10-18T09:31:49.615Z","sourceCount":20,"totalRows":17915666,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}