{"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":"4604760","name":"No 3 Mine"},"operator":{"type":"operator","id":"P08644","name":"Iaeger Coal Sales"},"controller":{"type":"controller","id":"C06884","name":"Boliek Donald B"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00773","name":"French  Hatfield et al"},"object":{"type":"mine","id":"4604760","name":"No 3 Mine"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604760|C00773|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P00926","name":"C & D Coal Company"},"object":{"type":"mine","id":"4604760","name":"No 3 Mine"},"validFrom":"1975-01-01","validTo":"1975-12-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604760|P00926|1975-01-01|1975-12-02"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00772","name":"Dawson Clinton"},"object":{"type":"mine","id":"4604760","name":"No 3 Mine"},"validFrom":"1975-01-01","validTo":"1975-12-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604760|C00772|1975-01-01|1975-12-02"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00772","name":"Dawson Clinton"},"object":{"type":"operator","id":"P00926","name":"C & D Coal Company"},"validFrom":"1975-01-01","validTo":"1975-12-02","current":false,"derived":true,"evidenceMineId":"4604760","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604760|P00926|1975-01-01|C00772|1975-01-01|49909"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P00927","name":"Iaeger Coal Sales"},"object":{"type":"mine","id":"4604760","name":"No 3 Mine"},"validFrom":"1975-12-03","validTo":"1977-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604760|P00927|1975-12-03|1977-09-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00773","name":"French  Hatfield et al"},"object":{"type":"operator","id":"P00927","name":"Iaeger Coal Sales"},"validFrom":"1975-12-03","validTo":"1977-09-30","current":false,"derived":true,"evidenceMineId":"4604760","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604760|P00927|1975-12-03|C00773|1950-01-01|49914"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00773","name":"Harold E  Cline et al"},"object":{"type":"operator","id":"P00927","name":"Iaeger Coal Sales"},"validFrom":"1975-12-03","validTo":"1977-09-30","current":false,"derived":true,"evidenceMineId":"4604760","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604760|P00927|1975-12-03|C00773|1950-01-01|49915"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P08644","name":"Iaeger Coal Sales"},"object":{"type":"mine","id":"4604760","name":"No 3 Mine"},"validFrom":"1977-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604760|P08644|1977-10-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C06884","name":"Boliek Donald B"},"object":{"type":"mine","id":"4604760","name":"No 3 Mine"},"validFrom":"1977-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604760|C06884|1977-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C06884","name":"Boliek Donald B"},"object":{"type":"operator","id":"P08644","name":"Iaeger Coal Sales"},"validFrom":"1977-10-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4604760","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604760|P08644|1977-10-01|C06884|1977-10-01|73120"}}],"coverage":{"historyRecords":4,"edgeCount":10,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4604760","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"}}