{"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":"2902460","name":"B & R TRUCKING"},"operator":{"type":"operator","id":"0147773","name":"B & R TRUCKING, INC."},"controller":{"type":"controller","id":"0129341","name":"Trey  Hughes"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0147773","name":"B & R TRUCKING, INC."},"object":{"type":"mine","id":"2902460","name":"B & R TRUCKING"},"validFrom":"2016-11-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902460|0147773|2016-11-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0129341","name":"Trey  Hughes"},"object":{"type":"mine","id":"2902460","name":"B & R TRUCKING"},"validFrom":"2016-11-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902460|0129341|2016-11-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0129341","name":"Trey  Hughes"},"object":{"type":"operator","id":"0147773","name":"B & R TRUCKING, INC."},"validFrom":"2016-11-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"2902460","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902460|0147773|2016-11-01|0129341|2016-11-01|25935"}}],"coverage":{"historyRecords":1,"edgeCount":3,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2902460","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"}}