{"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":"0800693","name":"Wallace Mine"},"operator":{"type":"operator","id":"L01013","name":"Standard Sand & Silica Company"},"controller":{"type":"controller","id":"0183444","name":"Valerie  Carnes"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01013","name":"Standard Sand & Silica Company"},"object":{"type":"mine","id":"0800693","name":"Wallace Mine"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0800693|L01013|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00873","name":"Lemuel Baylis  Carnes III"},"object":{"type":"mine","id":"0800693","name":"Wallace Mine"},"validFrom":"1950-01-01","validTo":"2024-02-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0800693|M00873|1950-01-01|2024-02-25"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00873","name":"Lemuel Baylis  Carnes III"},"object":{"type":"operator","id":"L01013","name":"Standard Sand & Silica Company"},"validFrom":"1950-01-01","validTo":"2024-02-25","current":false,"derived":true,"evidenceMineId":"0800693","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0800693|L01013|1950-01-01|M00873|1950-01-01|115546"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0183444","name":"Valerie  Carnes"},"object":{"type":"mine","id":"0800693","name":"Wallace Mine"},"validFrom":"2024-02-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0800693|0183444|2024-02-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0183444","name":"Valerie  Carnes"},"object":{"type":"operator","id":"L01013","name":"Standard Sand & Silica Company"},"validFrom":"2024-02-26","validTo":null,"current":true,"derived":true,"evidenceMineId":"0800693","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0800693|L01013|1950-01-01|0183444|2024-02-26|39128"}}],"coverage":{"historyRecords":2,"edgeCount":5,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0800693","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"}}