{"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":"3607850","name":"R & S Slope"},"operator":{"type":"operator","id":"P20322","name":"Mountain View Coal Company"},"controller":{"type":"controller","id":"C09457","name":"Witmer Kenneth"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P18374","name":"Mountain View Coal Company"},"object":{"type":"mine","id":"3607850","name":"R & S Slope"},"validFrom":"1986-12-01","validTo":"1989-06-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607850|P18374|1986-12-01|1989-06-04"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C11613","name":"Barnhart Ronald Et Al"},"object":{"type":"mine","id":"3607850","name":"R & S Slope"},"validFrom":"1986-12-01","validTo":"1989-06-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607850|C11613|1986-12-01|1989-06-04"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C11613","name":"Barnhart Ronald Et Al"},"object":{"type":"operator","id":"P18374","name":"Mountain View Coal Company"},"validFrom":"1986-12-01","validTo":"1989-06-04","current":false,"derived":true,"evidenceMineId":"3607850","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607850|P18374|1986-12-01|C11613|1986-12-01|84996"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P20322","name":"Mountain View Coal Company"},"object":{"type":"mine","id":"3607850","name":"R & S Slope"},"validFrom":"1989-06-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607850|P20322|1989-06-05|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C09457","name":"Witmer Kenneth Et Al"},"object":{"type":"mine","id":"3607850","name":"R & S Slope"},"validFrom":"1989-06-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607850|C09457|1989-06-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C09457","name":"Witmer Kenneth Et Al"},"object":{"type":"operator","id":"P20322","name":"Mountain View Coal Company"},"validFrom":"1989-06-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"3607850","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607850|P20322|1989-06-05|C09457|1989-06-05|79704"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3607850","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"}}