{"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":"0102886","name":"North Pratt Mine"},"operator":{"type":"operator","id":"P15705","name":"Central Mining Inc"},"controller":{"type":"controller","id":"C11236","name":"Russell R Don"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C11236","name":"Russell R Don"},"object":{"type":"mine","id":"0102886","name":"North Pratt Mine"},"validFrom":"1984-06-06","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102886|C11236|1984-06-06|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P15705","name":"Central Mining Inc"},"object":{"type":"mine","id":"0102886","name":"North Pratt Mine"},"validFrom":"1990-11-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102886|P15705|1990-11-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C11236","name":"Russell R Don"},"object":{"type":"operator","id":"P15705","name":"Central Mining Inc"},"validFrom":"1990-11-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"0102886","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102886|P15705|1990-11-01|C11236|1984-06-06|84176"}}],"coverage":{"historyRecords":1,"edgeCount":3,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0102886","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"}}