{"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":"2501088","name":"YANNEY"},"operator":{"type":"operator","id":"L07270","name":"Broadfoot Sand & Gravel Inc"},"controller":{"type":"controller","id":"0137523","name":"Aaron D Broadfoot; Austin L Broadfoot"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05785","name":"Terry  Broadfoot"},"object":{"type":"mine","id":"2501088","name":"YANNEY"},"validFrom":"1950-01-01","validTo":"2016-12-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2501088|M05785|1950-01-01|2016-12-16"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07270","name":"Broadfoot Sand & Gravel Inc"},"object":{"type":"mine","id":"2501088","name":"YANNEY"},"validFrom":"1987-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2501088|L07270|1987-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05785","name":"Terry  Broadfoot"},"object":{"type":"operator","id":"L07270","name":"Broadfoot Sand & Gravel Inc"},"validFrom":"1987-07-01","validTo":"2016-12-16","current":false,"derived":true,"evidenceMineId":"2501088","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2501088|L07270|1987-07-01|M05785|1950-01-01|135378"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0137523","name":"Austin L Broadfoot et al"},"object":{"type":"mine","id":"2501088","name":"YANNEY"},"validFrom":"2016-12-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2501088|0137523|2016-12-17|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0137523","name":"Austin L Broadfoot et al"},"object":{"type":"operator","id":"L07270","name":"Broadfoot Sand & Gravel Inc"},"validFrom":"2016-12-17","validTo":null,"current":true,"derived":true,"evidenceMineId":"2501088","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2501088|L07270|1987-07-01|0137523|2016-12-17|27809"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0137523","name":"Aaron D Broadfoot et al"},"object":{"type":"operator","id":"L07270","name":"Broadfoot Sand & Gravel Inc"},"validFrom":"2016-12-17","validTo":null,"current":true,"derived":true,"evidenceMineId":"2501088","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2501088|L07270|1987-07-01|0137523|2016-12-17|27810"}}],"coverage":{"historyRecords":3,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2501088","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"}}