{"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":"4604919","name":"No 1 Mine"},"operator":{"type":"operator","id":"P12475","name":"Vernon Mining Inc"},"controller":{"type":"controller","id":"C07221","name":"Hunt Vernon"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P05354","name":"Cline'S Inc"},"object":{"type":"mine","id":"4604919","name":"No 1 Mine"},"validFrom":"1975-11-01","validTo":"1977-06-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604919|P05354|1975-11-01|1977-06-21"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C04435","name":"Cline Gordon & Gordie"},"object":{"type":"mine","id":"4604919","name":"No 1 Mine"},"validFrom":"1975-11-01","validTo":"1977-06-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604919|C04435|1975-11-01|1977-06-21"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C04435","name":"Cline Gordon & Gordie"},"object":{"type":"operator","id":"P05354","name":"Cline'S Inc"},"validFrom":"1975-11-01","validTo":"1977-06-21","current":false,"derived":true,"evidenceMineId":"4604919","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604919|P05354|1975-11-01|C04435|1975-11-01|66001"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P06801","name":"Cline'S Inc"},"object":{"type":"mine","id":"4604919","name":"No 1 Mine"},"validFrom":"1977-06-22","validTo":"1981-07-12","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604919|P06801|1977-06-22|1981-07-12"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05640","name":"Richard T  Hatfield et al"},"object":{"type":"mine","id":"4604919","name":"No 1 Mine"},"validFrom":"1977-06-22","validTo":"1981-07-12","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604919|C05640|1977-06-22|1981-07-12"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05640","name":"Richard T  Hatfield et al"},"object":{"type":"operator","id":"P06801","name":"Cline'S Inc"},"validFrom":"1977-06-22","validTo":"1981-07-12","current":false,"derived":true,"evidenceMineId":"4604919","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604919|P06801|1977-06-22|C05640|1977-06-22|69413"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P12475","name":"Vernon Mining Inc"},"object":{"type":"mine","id":"4604919","name":"No 1 Mine"},"validFrom":"1981-07-13","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604919|P12475|1981-07-13|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C07221","name":"Hunt Vernon"},"object":{"type":"mine","id":"4604919","name":"No 1 Mine"},"validFrom":"1981-07-13","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604919|C07221|1981-07-13|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C07221","name":"Hunt Vernon"},"object":{"type":"operator","id":"P12475","name":"Vernon Mining Inc"},"validFrom":"1981-07-13","validTo":null,"current":true,"derived":true,"evidenceMineId":"4604919","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604919|P12475|1981-07-13|C07221|1981-07-13|74171"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4604919","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"}}