{"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":"1001594","name":"Blackstone Mine"},"operator":{"type":"operator","id":"L10262","name":"Richwell Resources Ltd"},"controller":{"type":"controller","id":"M07996","name":"Hawley James H Iii"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L05948","name":"Silver Chief Mining Company Inc"},"object":{"type":"mine","id":"1001594","name":"Blackstone Mine"},"validFrom":"1982-09-01","validTo":"1988-02-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001594|L05948|1982-09-01|1988-02-16"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M04777","name":"Hawley James H Jr"},"object":{"type":"mine","id":"1001594","name":"Blackstone Mine"},"validFrom":"1982-09-01","validTo":"1988-02-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001594|M04777|1982-09-01|1988-02-16"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M04777","name":"Hawley James H Jr"},"object":{"type":"operator","id":"L05948","name":"Silver Chief Mining Company Inc"},"validFrom":"1982-09-01","validTo":"1988-02-16","current":false,"derived":true,"evidenceMineId":"1001594","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001594|L05948|1982-09-01|M04777|1982-09-01|132747"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07996","name":"Hawley James H Iii"},"object":{"type":"mine","id":"1001594","name":"Blackstone Mine"},"validFrom":"1988-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001594|M07996|1988-02-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10262","name":"Richwell Resources Ltd"},"object":{"type":"mine","id":"1001594","name":"Blackstone Mine"},"validFrom":"1988-02-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001594|L10262|1988-02-17|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07996","name":"Hawley James H Iii"},"object":{"type":"operator","id":"L10262","name":"Richwell Resources Ltd"},"validFrom":"1988-02-17","validTo":null,"current":true,"derived":true,"evidenceMineId":"1001594","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001594|L10262|1988-02-17|M07996|1988-02-01|142501"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1001594","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"}}