{"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":"1514164","name":"No 4"},"operator":{"type":"operator","id":"P15152","name":"Roxana Coal Company Inc"},"controller":{"type":"controller","id":"C10921","name":"Day Rickey & David C Banks"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P16836","name":"Commerce Coal Company Inc"},"object":{"type":"mine","id":"1514164","name":"No 4"},"validFrom":"1983-08-01","validTo":"1990-08-13","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514164|P16836|1983-08-01|1990-08-13"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00867","name":"Hogg Jim"},"object":{"type":"mine","id":"1514164","name":"No 4"},"validFrom":"1983-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514164|C00867|1983-08-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00867","name":"Hogg Jim"},"object":{"type":"operator","id":"P16836","name":"Commerce Coal Company Inc"},"validFrom":"1983-08-01","validTo":"1990-08-13","current":false,"derived":true,"evidenceMineId":"1514164","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514164|P16836|1983-08-01|C00867|1983-08-01|50662"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C10921","name":"Day Rickey & David C Banks"},"object":{"type":"mine","id":"1514164","name":"No 4"},"validFrom":"1984-01-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514164|C10921|1984-01-09|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P15152","name":"Roxana Coal Company Inc"},"object":{"type":"mine","id":"1514164","name":"No 4"},"validFrom":"1990-08-14","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514164|P15152|1990-08-14|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C10921","name":"Day Rickey & David C Banks"},"object":{"type":"operator","id":"P15152","name":"Roxana Coal Company Inc"},"validFrom":"1990-08-14","validTo":null,"current":true,"derived":true,"evidenceMineId":"1514164","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514164|P15152|1990-08-14|C10921|1984-01-09|83144"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1514164","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"}}