{"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":"0102243","name":"Key Coal Company"},"operator":{"type":"operator","id":"P17323","name":"Key Coal Company"},"controller":{"type":"controller","id":"C12201","name":"Webb Tina K"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P11210","name":"C & S Coal Company Inc"},"object":{"type":"mine","id":"0102243","name":"Key Coal Company"},"validFrom":"1980-10-01","validTo":"1981-01-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102243|P11210|1980-10-01|1981-01-01"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C08439","name":"Cagle Melvin"},"object":{"type":"mine","id":"0102243","name":"Key Coal Company"},"validFrom":"1980-10-01","validTo":"1981-01-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102243|C08439|1980-10-01|1981-01-01"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C08439","name":"Cagle Melvin"},"object":{"type":"operator","id":"P11210","name":"C & S Coal Company Inc"},"validFrom":"1980-10-01","validTo":"1981-01-01","current":false,"derived":true,"evidenceMineId":"0102243","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102243|P11210|1980-10-01|C08439|1980-10-01|77307"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P11621","name":"May Coal Company Inc"},"object":{"type":"mine","id":"0102243","name":"Key Coal Company"},"validFrom":"1981-01-02","validTo":"1985-01-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102243|P11621|1981-01-02|1985-01-10"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C08669","name":"May E Owen"},"object":{"type":"mine","id":"0102243","name":"Key Coal Company"},"validFrom":"1981-01-02","validTo":"1985-01-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102243|C08669|1981-01-02|1985-01-10"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C08669","name":"May E Owen"},"object":{"type":"operator","id":"P11621","name":"May Coal Company Inc"},"validFrom":"1981-01-02","validTo":"1985-01-10","current":false,"derived":true,"evidenceMineId":"0102243","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102243|P11621|1981-01-02|C08669|1981-01-02|77902"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P16294","name":"Key Coal Company Inc"},"object":{"type":"mine","id":"0102243","name":"Key Coal Company"},"validFrom":"1985-01-11","validTo":"1985-11-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102243|P16294|1985-01-11|1985-11-01"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C11592","name":"Key David"},"object":{"type":"mine","id":"0102243","name":"Key Coal Company"},"validFrom":"1985-01-11","validTo":"1985-11-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102243|C11592|1985-01-11|1985-11-01"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C11592","name":"Key David"},"object":{"type":"operator","id":"P16294","name":"Key Coal Company Inc"},"validFrom":"1985-01-11","validTo":"1985-11-01","current":false,"derived":true,"evidenceMineId":"0102243","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102243|P16294|1985-01-11|C11592|1985-01-11|84933"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P17323","name":"Key Coal Company"},"object":{"type":"mine","id":"0102243","name":"Key Coal Company"},"validFrom":"1985-11-02","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102243|P17323|1985-11-02|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12201","name":"Webb Tina K"},"object":{"type":"mine","id":"0102243","name":"Key Coal Company"},"validFrom":"1985-11-02","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102243|C12201|1985-11-02|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12201","name":"Webb Tina K"},"object":{"type":"operator","id":"P17323","name":"Key Coal Company"},"validFrom":"1985-11-02","validTo":null,"current":true,"derived":true,"evidenceMineId":"0102243","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102243|P17323|1985-11-02|C12201|1985-11-02|86354"}}],"coverage":{"historyRecords":4,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0102243","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"}}