{"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":"1514249","name":"No 1 Surface"},"operator":{"type":"operator","id":"P14733","name":"Anderson & Anderson Coal Company"},"controller":{"type":"controller","id":"C10655","name":"Anderson Reuben & Roger"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P14733","name":"Anderson & Anderson Coal Company"},"object":{"type":"mine","id":"1514249","name":"No 1 Surface"},"validFrom":"1983-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514249|P14733|1983-10-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C10655","name":"Anderson Reuben & Roger"},"object":{"type":"mine","id":"1514249","name":"No 1 Surface"},"validFrom":"1983-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514249|C10655|1983-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C10655","name":"Anderson Reuben & Roger"},"object":{"type":"operator","id":"P14733","name":"Anderson & Anderson Coal Company"},"validFrom":"1983-10-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1514249","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514249|P14733|1983-10-01|C10655|1983-10-01|82503"}}],"coverage":{"historyRecords":1,"edgeCount":3,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1514249","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"}}