{"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":"1700531","name":"Western Region"},"operator":{"type":"operator","id":"L02110","name":"Maine Department Of Transportation"},"controller":{"type":"controller","id":"M01893","name":"State Of Maine"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01893","name":"State Of Maine"},"object":{"type":"mine","id":"1700531","name":"Western Region"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1700531|M01893|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L08967","name":"M D O T"},"object":{"type":"mine","id":"1700531","name":"Western Region"},"validFrom":"1981-04-01","validTo":"2003-09-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1700531|L08967|1981-04-01|2003-09-29"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01893","name":"State Of Maine"},"object":{"type":"mine","id":"1700531","name":"Western Region"},"validFrom":"1981-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1700531|M01893|1981-04-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01893","name":"State Of Maine"},"object":{"type":"operator","id":"L08967","name":"M D O T"},"validFrom":"1981-04-01","validTo":"2003-09-29","current":false,"derived":true,"evidenceMineId":"1700531","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1700531|L08967|1981-04-01|M01893|1981-04-01|121949"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L02110","name":"Maine Department Of Transportation"},"object":{"type":"mine","id":"1700531","name":"Western Region"},"validFrom":"2003-09-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1700531|L02110|2003-09-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01893","name":"State Of Maine"},"object":{"type":"operator","id":"L02110","name":"Maine Department Of Transportation"},"validFrom":"2003-09-30","validTo":null,"current":true,"derived":true,"evidenceMineId":"1700531","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1700531|L02110|2003-09-30|M01893|1950-01-01|121938"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1700531","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"}}