{"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":"3607275","name":"Tuscarora Mine"},"operator":{"type":"operator","id":"P19534","name":"Parschantel Energy Inc"},"controller":{"type":"controller","id":"C13404","name":"Gurzenda Joseph"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P13081","name":"Folmer A Gong Ltd"},"object":{"type":"mine","id":"3607275","name":"Tuscarora Mine"},"validFrom":"1982-03-01","validTo":"1988-05-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607275|P13081|1982-03-01|1988-05-03"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C09608","name":"Kovalchick Peter"},"object":{"type":"mine","id":"3607275","name":"Tuscarora Mine"},"validFrom":"1982-03-01","validTo":"1988-05-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607275|C09608|1982-03-01|1988-05-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C09608","name":"Kovalchick Peter"},"object":{"type":"operator","id":"P13081","name":"Folmer A Gong Ltd"},"validFrom":"1982-03-01","validTo":"1988-05-03","current":false,"derived":true,"evidenceMineId":"3607275","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607275|P13081|1982-03-01|C09608|1982-03-01|80081"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19534","name":"Parschantel Energy Inc"},"object":{"type":"mine","id":"3607275","name":"Tuscarora Mine"},"validFrom":"1988-05-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607275|P19534|1988-05-04|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13404","name":"Gurzenda Joseph"},"object":{"type":"mine","id":"3607275","name":"Tuscarora Mine"},"validFrom":"1988-05-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607275|C13404|1988-05-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13404","name":"Gurzenda Joseph"},"object":{"type":"operator","id":"P19534","name":"Parschantel Energy Inc"},"validFrom":"1988-05-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"3607275","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607275|P19534|1988-05-04|C13404|1988-05-04|89526"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3607275","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"}}