{"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":"0404821","name":"Hilda Mine"},"operator":{"type":"operator","id":"L12819","name":"Golden Portal Mining Inc"},"controller":{"type":"controller","id":"M09828","name":"Harvey Norman L Jr"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12818","name":"Channel Mining Company Incorporatd"},"object":{"type":"mine","id":"0404821","name":"Hilda Mine"},"validFrom":"1986-07-01","validTo":"1992-04-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404821|L12818|1986-07-01|1992-04-19"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09827","name":"Cameron Lorne A"},"object":{"type":"mine","id":"0404821","name":"Hilda Mine"},"validFrom":"1986-07-01","validTo":"1992-04-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404821|M09827|1986-07-01|1992-04-19"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09827","name":"Cameron Lorne A"},"object":{"type":"operator","id":"L12818","name":"Channel Mining Company Incorporatd"},"validFrom":"1986-07-01","validTo":"1992-04-19","current":false,"derived":true,"evidenceMineId":"0404821","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404821|L12818|1986-07-01|M09827|1986-07-01|147613"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12819","name":"Golden Portal Mining Inc"},"object":{"type":"mine","id":"0404821","name":"Hilda Mine"},"validFrom":"1992-04-20","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404821|L12819|1992-04-20|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09828","name":"Harvey Norman L Jr"},"object":{"type":"mine","id":"0404821","name":"Hilda Mine"},"validFrom":"1992-04-20","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404821|M09828|1992-04-20|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09828","name":"Harvey Norman L Jr"},"object":{"type":"operator","id":"L12819","name":"Golden Portal Mining Inc"},"validFrom":"1992-04-20","validTo":null,"current":true,"derived":true,"evidenceMineId":"0404821","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404821|L12819|1992-04-20|M09828|1992-04-20|147614"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0404821","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"}}