{"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":"1510847","name":"No 3"},"operator":{"type":"operator","id":"P17149","name":"Hellier Fuel Company"},"controller":{"type":"controller","id":"C12095","name":"Turner Ernest A"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C04318","name":"Reese Chester-Danny & Teddy D"},"object":{"type":"mine","id":"1510847","name":"No 3"},"validFrom":"1977-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510847|C04318|1977-03-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P05225","name":"Big Branch Mining Company"},"object":{"type":"mine","id":"1510847","name":"No 3"},"validFrom":"1977-10-01","validTo":"1980-08-11","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510847|P05225|1977-10-01|1980-08-11"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C04318","name":"Reese Chester-Danny & Teddy D"},"object":{"type":"operator","id":"P05225","name":"Big Branch Mining Company"},"validFrom":"1977-10-01","validTo":"1980-08-11","current":false,"derived":true,"evidenceMineId":"1510847","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510847|P05225|1977-10-01|C04318|1977-03-01|65359"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01545","name":"Hylton Freddie A"},"object":{"type":"mine","id":"1510847","name":"No 3"},"validFrom":"1980-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510847|C01545|1980-02-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P10240","name":"Hellier Fuel Company"},"object":{"type":"mine","id":"1510847","name":"No 3"},"validFrom":"1980-08-12","validTo":"1985-10-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510847|P10240|1980-08-12|1985-10-14"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01545","name":"Hylton Freddie A"},"object":{"type":"operator","id":"P10240","name":"Hellier Fuel Company"},"validFrom":"1980-08-12","validTo":"1985-10-14","current":false,"derived":true,"evidenceMineId":"1510847","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510847|P10240|1980-08-12|C01545|1980-02-01|54709"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P17149","name":"Hellier Fuel Company"},"object":{"type":"mine","id":"1510847","name":"No 3"},"validFrom":"1985-10-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510847|P17149|1985-10-15|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12095","name":"Turner Ernest A"},"object":{"type":"mine","id":"1510847","name":"No 3"},"validFrom":"1985-10-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510847|C12095|1985-10-15|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12095","name":"Turner Ernest A"},"object":{"type":"operator","id":"P17149","name":"Hellier Fuel Company"},"validFrom":"1985-10-15","validTo":null,"current":true,"derived":true,"evidenceMineId":"1510847","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510847|P17149|1985-10-15|C12095|1985-10-15|86122"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1510847","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"}}