{"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":"2000887","name":"Austin Western Plant #1"},"operator":{"type":"operator","id":"L09556","name":"B & J Aggregates"},"controller":{"type":"controller","id":"M07496","name":"Brown Jesse"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L02529","name":"Williams Brothers Asphalt Paving Company Inc"},"object":{"type":"mine","id":"2000887","name":"Austin Western Plant #1"},"validFrom":"1950-01-01","validTo":"1984-10-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000887|L02529|1950-01-01|1984-10-10"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02701","name":"Williams Colin D"},"object":{"type":"mine","id":"2000887","name":"Austin Western Plant #1"},"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":"2000887|M02701|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02701","name":"Williams Colin D"},"object":{"type":"operator","id":"L02529","name":"Williams Brothers Asphalt Paving Company Inc"},"validFrom":"1950-01-01","validTo":"1984-10-10","current":false,"derived":true,"evidenceMineId":"2000887","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000887|L02529|1950-01-01|M02701|1950-01-01|126654"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07379","name":"Midwest Aggregates Inc"},"object":{"type":"mine","id":"2000887","name":"Austin Western Plant #1"},"validFrom":"1984-10-11","validTo":"1987-06-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000887|L07379|1984-10-11|1987-06-02"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05875","name":"Charles  Sanders"},"object":{"type":"mine","id":"2000887","name":"Austin Western Plant #1"},"validFrom":"1984-10-11","validTo":"1987-06-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000887|M05875|1984-10-11|1987-06-02"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05875","name":"Charles  Sanders"},"object":{"type":"operator","id":"L07379","name":"Midwest Aggregates Inc"},"validFrom":"1984-10-11","validTo":"1987-06-02","current":false,"derived":true,"evidenceMineId":"2000887","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000887|L07379|1984-10-11|M05875|1984-10-11|135636"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09556","name":"B & J Aggregates"},"object":{"type":"mine","id":"2000887","name":"Austin Western Plant #1"},"validFrom":"1987-06-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000887|L09556|1987-06-03|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07496","name":"Brown Jesse"},"object":{"type":"mine","id":"2000887","name":"Austin Western Plant #1"},"validFrom":"1987-06-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000887|M07496|1987-06-03|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07496","name":"Brown Jesse"},"object":{"type":"operator","id":"L09556","name":"B & J Aggregates"},"validFrom":"1987-06-03","validTo":null,"current":true,"derived":true,"evidenceMineId":"2000887","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2000887|L09556|1987-06-03|M07496|1987-06-03|141394"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2000887","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"}}