{"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":"3609340","name":"Frank's Quarry"},"operator":{"type":"operator","id":"0076524","name":"Tim Brewer & Son Flagstone"},"controller":{"type":"controller","id":"0064271","name":"Tim  Brewer; Adam  Bohn"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0061404","name":"Vernon Smith"},"object":{"type":"mine","id":"3609340","name":"Frank's Quarry"},"validFrom":"2005-06-14","validTo":"2006-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609340|0061404|2005-06-14|2006-09-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0051249","name":"Vernon L Smith"},"object":{"type":"mine","id":"3609340","name":"Frank's Quarry"},"validFrom":"2005-06-14","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609340|0051249|2005-06-14|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0051249","name":"Vernon L Smith"},"object":{"type":"operator","id":"0061404","name":"Vernon Smith"},"validFrom":"2005-06-14","validTo":"2006-09-30","current":false,"derived":true,"evidenceMineId":"3609340","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609340|0061404|2005-06-14|0051249|2005-06-14|6441"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0076524","name":"Tim Brewer & Son Flagstone"},"object":{"type":"mine","id":"3609340","name":"Frank's Quarry"},"validFrom":"2006-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609340|0076524|2006-10-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0064271","name":"Tim  Brewer  et al"},"object":{"type":"mine","id":"3609340","name":"Frank's Quarry"},"validFrom":"2006-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609340|0064271|2006-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0064271","name":"Tim  Brewer  et al"},"object":{"type":"operator","id":"0076524","name":"Tim Brewer & Son Flagstone"},"validFrom":"2006-10-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3609340","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609340|0076524|2006-10-01|0064271|2006-10-01|8805"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0064271","name":"Adam  Bohn  et al"},"object":{"type":"operator","id":"0076524","name":"Tim Brewer & Son Flagstone"},"validFrom":"2006-10-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3609340","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609340|0076524|2006-10-01|0064271|2006-10-01|8806"}}],"coverage":{"historyRecords":3,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3609340","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"}}