{"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":"4202229","name":"Champlin Pit"},"operator":{"type":"operator","id":"L36657","name":"Nephi Sandstone Corp"},"controller":{"type":"controller","id":"M32399","name":"Craig  Dansie; Bruce  Evans"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M32399","name":"Bruce  Evans et al"},"object":{"type":"mine","id":"4202229","name":"Champlin Pit"},"validFrom":"1989-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4202229|M32399|1989-10-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16357","name":"Tuff Rock Llc"},"object":{"type":"mine","id":"4202229","name":"Champlin Pit"},"validFrom":"1999-02-01","validTo":"1999-06-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4202229|L16357|1999-02-01|1999-06-21"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M12510","name":"Dale  Snyder et al"},"object":{"type":"mine","id":"4202229","name":"Champlin Pit"},"validFrom":"1999-02-01","validTo":"1999-06-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4202229|M12510|1999-02-01|1999-06-21"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12510","name":"Dale  Snyder et al"},"object":{"type":"operator","id":"L16357","name":"Tuff Rock Llc"},"validFrom":"1999-02-01","validTo":"1999-06-21","current":false,"derived":true,"evidenceMineId":"4202229","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4202229|L16357|1999-02-01|M12510|1999-02-01|153917"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16993","name":"Sweetwater Landscaping"},"object":{"type":"mine","id":"4202229","name":"Champlin Pit"},"validFrom":"1999-06-22","validTo":"2000-09-11","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4202229|L16993|1999-06-22|2000-09-11"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M12969","name":"Richard  Boyce"},"object":{"type":"mine","id":"4202229","name":"Champlin Pit"},"validFrom":"1999-06-22","validTo":"2000-09-11","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4202229|M12969|1999-06-22|2000-09-11"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12969","name":"Richard  Boyce"},"object":{"type":"operator","id":"L16993","name":"Sweetwater Landscaping"},"validFrom":"1999-06-22","validTo":"2000-09-11","current":false,"derived":true,"evidenceMineId":"4202229","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4202229|L16993|1999-06-22|M12969|1999-06-22|155061"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L36657","name":"Nephi Sandstone Corp"},"object":{"type":"mine","id":"4202229","name":"Champlin Pit"},"validFrom":"2000-09-12","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4202229|L36657|2000-09-12|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M32399","name":"Bruce  Evans et al"},"object":{"type":"operator","id":"L36657","name":"Nephi Sandstone Corp"},"validFrom":"2000-09-12","validTo":null,"current":true,"derived":true,"evidenceMineId":"4202229","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4202229|L36657|2000-09-12|M32399|1989-10-01|160846"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M32399","name":"Craig  Dansie et al"},"object":{"type":"operator","id":"L36657","name":"Nephi Sandstone Corp"},"validFrom":"2000-09-12","validTo":null,"current":true,"derived":true,"evidenceMineId":"4202229","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4202229|L36657|2000-09-12|M32399|1989-10-01|160847"}}],"coverage":{"historyRecords":4,"edgeCount":10,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4202229","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"}}