{"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":"3200723","name":"Portable Crusher"},"operator":{"type":"operator","id":"0176255","name":"Bear Creek Gravel"},"controller":{"type":"controller","id":"0177201","name":"Aaron B Potts"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L30808","name":"Bear Creek Gravel"},"object":{"type":"mine","id":"3200723","name":"Portable Crusher"},"validFrom":"1991-06-01","validTo":"2009-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200723|L30808|1991-06-01|2009-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M30808","name":"Patrick F  Anderson"},"object":{"type":"mine","id":"3200723","name":"Portable Crusher"},"validFrom":"1991-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200723|M30808|1991-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M30808","name":"Patrick F  Anderson"},"object":{"type":"operator","id":"L30808","name":"Bear Creek Gravel"},"validFrom":"1991-06-01","validTo":"2009-12-31","current":false,"derived":true,"evidenceMineId":"3200723","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200723|L30808|1991-06-01|M30808|1991-06-01|158999"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0107626","name":"Bear Creek Gravel, Inc."},"object":{"type":"mine","id":"3200723","name":"Portable Crusher"},"validFrom":"2010-01-01","validTo":"2021-05-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200723|0107626|2010-01-01|2021-05-03"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M30808","name":"Patrick F  Anderson"},"object":{"type":"mine","id":"3200723","name":"Portable Crusher"},"validFrom":"2010-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200723|M30808|2010-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M30808","name":"Patrick F  Anderson"},"object":{"type":"operator","id":"0107626","name":"Bear Creek Gravel, Inc."},"validFrom":"2010-01-01","validTo":"2021-05-03","current":false,"derived":true,"evidenceMineId":"3200723","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200723|0107626|2010-01-01|M30808|2010-01-01|159000"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0176255","name":"Bear Creek Gravel"},"object":{"type":"mine","id":"3200723","name":"Portable Crusher"},"validFrom":"2021-05-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200723|0176255|2021-05-04|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0161765","name":"Casey  Klein et al"},"object":{"type":"mine","id":"3200723","name":"Portable Crusher"},"validFrom":"2021-05-04","validTo":"2023-06-11","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200723|0161765|2021-05-04|2023-06-11"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0161765","name":"Casey  Klein et al"},"object":{"type":"operator","id":"0176255","name":"Bear Creek Gravel"},"validFrom":"2021-05-04","validTo":"2023-06-11","current":false,"derived":true,"evidenceMineId":"3200723","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200723|0176255|2021-05-04|0161765|2021-05-04|33866"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0161765","name":"Aaron B  Potts et al"},"object":{"type":"operator","id":"0176255","name":"Bear Creek Gravel"},"validFrom":"2021-05-04","validTo":"2023-06-11","current":false,"derived":true,"evidenceMineId":"3200723","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200723|0176255|2021-05-04|0161765|2021-05-04|33867"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0177201","name":"Aaron B Potts"},"object":{"type":"mine","id":"3200723","name":"Portable Crusher"},"validFrom":"2023-06-12","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200723|0177201|2023-06-12|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0177201","name":"Aaron B Potts"},"object":{"type":"operator","id":"0176255","name":"Bear Creek Gravel"},"validFrom":"2023-06-12","validTo":null,"current":true,"derived":true,"evidenceMineId":"3200723","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200723|0176255|2021-05-04|0177201|2023-06-12|38003"}}],"coverage":{"historyRecords":5,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3200723","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"}}