{"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":"3102257","name":"McNabb Quarry"},"operator":{"type":"operator","id":"0109165","name":"Blue Rock Materials, LLC"},"controller":{"type":"controller","id":"0114421","name":"Randy  Jordan; Chester  Patterson"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0109165","name":"Blue Rock Materials, LLC"},"object":{"type":"mine","id":"3102257","name":"McNabb Quarry"},"validFrom":"2010-04-12","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102257|0109165|2010-04-12|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0092333","name":"Bruna  Dube"},"object":{"type":"mine","id":"3102257","name":"McNabb Quarry"},"validFrom":"2010-04-12","validTo":"2015-01-07","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102257|0092333|2010-04-12|2015-01-07"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0092333","name":"Bruna  Dube"},"object":{"type":"operator","id":"0109165","name":"Blue Rock Materials, LLC"},"validFrom":"2010-04-12","validTo":"2015-01-07","current":false,"derived":true,"evidenceMineId":"3102257","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102257|0109165|2010-04-12|0092333|2010-04-12|15122"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0114421","name":"Chester  Patterson et al"},"object":{"type":"mine","id":"3102257","name":"McNabb Quarry"},"validFrom":"2015-01-08","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102257|0114421|2015-01-08|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0114421","name":"Chester  Patterson et al"},"object":{"type":"operator","id":"0109165","name":"Blue Rock Materials, LLC"},"validFrom":"2015-01-08","validTo":null,"current":true,"derived":true,"evidenceMineId":"3102257","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102257|0109165|2010-04-12|0114421|2015-01-08|21503"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0114421","name":"Randy  Jordan et al"},"object":{"type":"operator","id":"0109165","name":"Blue Rock Materials, LLC"},"validFrom":"2015-01-08","validTo":null,"current":true,"derived":true,"evidenceMineId":"3102257","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102257|0109165|2010-04-12|0114421|2015-01-08|21504"}}],"coverage":{"historyRecords":3,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3102257","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"}}