{"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":"1601532","name":"Knight Pit"},"operator":{"type":"operator","id":"0160753","name":"Brownstone Sand and Gravel Inc"},"controller":{"type":"controller","id":"0195260","name":"Trisha  Duncan; Patrick  Ryder"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"0090173","name":"Shane  Cambre et al"},"object":{"type":"mine","id":"1601532","name":"Knight Pit"},"validFrom":"2011-03-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601532|0090173|2011-03-15|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0117445","name":"Enon Sand and Gravel LLC"},"object":{"type":"mine","id":"1601532","name":"Knight Pit"},"validFrom":"2013-09-25","validTo":"2018-12-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601532|0117445|2013-09-25|2018-12-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0090173","name":"Shane  Cambre et al"},"object":{"type":"operator","id":"0117445","name":"Enon Sand and Gravel LLC"},"validFrom":"2013-09-25","validTo":"2018-12-03","current":false,"derived":true,"evidenceMineId":"1601532","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601532|0117445|2013-09-25|0090173|2011-03-15|14491"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0090173","name":"Glynn  Huhn et al"},"object":{"type":"operator","id":"0117445","name":"Enon Sand and Gravel LLC"},"validFrom":"2013-09-25","validTo":"2018-12-03","current":false,"derived":true,"evidenceMineId":"1601532","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601532|0117445|2013-09-25|0090173|2011-03-15|14492"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0160753","name":"Brownstone Sand and Gravel Inc"},"object":{"type":"mine","id":"1601532","name":"Knight Pit"},"validFrom":"2018-12-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601532|0160753|2018-12-04|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0144861","name":"Brent  Kovach et al"},"object":{"type":"mine","id":"1601532","name":"Knight Pit"},"validFrom":"2018-12-04","validTo":"2025-08-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601532|0144861|2018-12-04|2025-08-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0144861","name":"Brent  Kovach et al"},"object":{"type":"operator","id":"0160753","name":"Brownstone Sand and Gravel Inc"},"validFrom":"2018-12-04","validTo":"2025-08-03","current":false,"derived":true,"evidenceMineId":"1601532","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601532|0160753|2018-12-04|0144861|2018-12-04|29583"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0144861","name":"M Shawn  Krantz et al"},"object":{"type":"operator","id":"0160753","name":"Brownstone Sand and Gravel Inc"},"validFrom":"2018-12-04","validTo":"2025-08-03","current":false,"derived":true,"evidenceMineId":"1601532","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601532|0160753|2018-12-04|0144861|2018-12-04|29584"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0144861","name":"Joseph  Shaw et al"},"object":{"type":"operator","id":"0160753","name":"Brownstone Sand and Gravel Inc"},"validFrom":"2018-12-04","validTo":"2025-08-03","current":false,"derived":true,"evidenceMineId":"1601532","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601532|0160753|2018-12-04|0144861|2018-12-04|29585"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0195260","name":"Trisha  Duncan et al"},"object":{"type":"mine","id":"1601532","name":"Knight Pit"},"validFrom":"2025-08-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601532|0195260|2025-08-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0195260","name":"Trisha  Duncan et al"},"object":{"type":"operator","id":"0160753","name":"Brownstone Sand and Gravel Inc"},"validFrom":"2025-08-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"1601532","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601532|0160753|2018-12-04|0195260|2025-08-04|41693"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0195260","name":"Patrick  Ryder et al"},"object":{"type":"operator","id":"0160753","name":"Brownstone Sand and Gravel Inc"},"validFrom":"2025-08-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"1601532","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601532|0160753|2018-12-04|0195260|2025-08-04|41694"}}],"coverage":{"historyRecords":7,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1601532","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"}}