{"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":"2026-10-18T09:31:49.615908+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":"3609059","name":"Kuperavage Ent Inc/TA Tuscarora Coal"},"operator":{"type":"operator","id":"P13797","name":"Kuperavage Ent Inc/Tuscarora Coal Co"},"controller":{"type":"controller","id":"0085797","name":"David B  Kuperavage"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C04595","name":"Bernard J  Kuperavage Jr et al"},"object":{"type":"mine","id":"3609059","name":"Kuperavage Ent Inc/TA Tuscarora Coal"},"validFrom":"1982-10-30","validTo":"2009-05-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3609059|C04595|1982-10-30|2009-05-25"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P13797","name":"Kuperavage Ent Inc/Tuscarora Coal Co"},"object":{"type":"mine","id":"3609059","name":"Kuperavage Ent Inc/TA Tuscarora Coal"},"validFrom":"2002-01-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3609059|P13797|2002-01-11|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C04595","name":"Bernard J  Kuperavage Jr et al"},"object":{"type":"operator","id":"P13797","name":"Kuperavage Ent Inc/Tuscarora Coal Co"},"validFrom":"2002-01-11","validTo":"2009-05-25","current":false,"derived":true,"evidenceMineId":"3609059","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3609059|P13797|2002-01-11|C04595|1982-10-30|66286"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0085797","name":"David B  Kuperavage"},"object":{"type":"mine","id":"3609059","name":"Kuperavage Ent Inc/TA Tuscarora Coal"},"validFrom":"2009-05-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3609059|0085797|2009-05-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0085797","name":"David B  Kuperavage"},"object":{"type":"operator","id":"P13797","name":"Kuperavage Ent Inc/Tuscarora Coal Co"},"validFrom":"2009-05-26","validTo":null,"current":true,"derived":true,"evidenceMineId":"3609059","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3609059|P13797|2002-01-11|0085797|2009-05-26|13774"}}],"coverage":{"historyRecords":2,"edgeCount":5,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3609059","dataSource":"postgres","snapshotId":"2026-10-18T09:31:49.615908+00:00","completedAt":"2026-10-18T09:31:49.615Z","sourceCount":20,"totalRows":17915666,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}