{"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":"0102974","name":"Cane Creek Mine"},"operator":{"type":"operator","id":"P21229","name":"Jack Trotter Jr Coal Company"},"controller":{"type":"controller","id":"C14279","name":"Trotter Carl J Jr"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C14279","name":"Trotter Carl J Jr"},"object":{"type":"mine","id":"0102974","name":"Cane Creek Mine"},"validFrom":"1990-12-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102974|C14279|1990-12-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P21229","name":"Jack Trotter Jr Coal Company"},"object":{"type":"mine","id":"0102974","name":"Cane Creek Mine"},"validFrom":"1992-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102974|P21229|1992-09-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C14279","name":"Trotter Carl J Jr"},"object":{"type":"operator","id":"P21229","name":"Jack Trotter Jr Coal Company"},"validFrom":"1992-09-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"0102974","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102974|P21229|1992-09-01|C14279|1990-12-01|92404"}}],"coverage":{"historyRecords":1,"edgeCount":3,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0102974","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"}}