{"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":"4605308","name":"No 1"},"operator":{"type":"operator","id":"P12900","name":"Aurora Mining Company"},"controller":{"type":"controller","id":"C09501","name":"Hatfield Dennie"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01267","name":"John C  Geupel"},"object":{"type":"mine","id":"4605308","name":"No 1"},"validFrom":"1975-08-12","validTo":"1977-11-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605308|C01267|1975-08-12|1977-11-27"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P02883","name":"Pocahontas Supreme Coal Company Inc"},"object":{"type":"mine","id":"4605308","name":"No 1"},"validFrom":"1976-10-01","validTo":"1977-11-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605308|P02883|1976-10-01|1977-11-27"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01267","name":"John C  Geupel"},"object":{"type":"operator","id":"P02883","name":"Pocahontas Supreme Coal Company Inc"},"validFrom":"1976-10-01","validTo":"1977-11-27","current":false,"derived":true,"evidenceMineId":"4605308","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605308|P02883|1976-10-01|C01267|1975-08-12|53193"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P07454","name":"Pocahontas Supreme Coal Company Inc"},"object":{"type":"mine","id":"4605308","name":"No 1"},"validFrom":"1977-11-28","validTo":"1981-02-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605308|P07454|1977-11-28|1981-02-01"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05346","name":"Moore Thomas E"},"object":{"type":"mine","id":"4605308","name":"No 1"},"validFrom":"1977-11-28","validTo":"1981-02-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605308|C05346|1977-11-28|1981-02-01"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05346","name":"Moore Thomas E"},"object":{"type":"operator","id":"P07454","name":"Pocahontas Supreme Coal Company Inc"},"validFrom":"1977-11-28","validTo":"1981-02-01","current":false,"derived":true,"evidenceMineId":"4605308","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605308|P07454|1977-11-28|C05346|1977-11-28|68552"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C08037","name":"Mc Vey Jack E"},"object":{"type":"mine","id":"4605308","name":"No 1"},"validFrom":"1980-04-14","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605308|C08037|1980-04-14|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P10560","name":"Coal America Inc"},"object":{"type":"mine","id":"4605308","name":"No 1"},"validFrom":"1981-02-02","validTo":"1982-01-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605308|P10560|1981-02-02|1982-01-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C08037","name":"Mc Vey Jack E"},"object":{"type":"operator","id":"P10560","name":"Coal America Inc"},"validFrom":"1981-02-02","validTo":"1982-01-03","current":false,"derived":true,"evidenceMineId":"4605308","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605308|P10560|1981-02-02|C08037|1980-04-14|76228"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P12900","name":"Aurora Mining Company"},"object":{"type":"mine","id":"4605308","name":"No 1"},"validFrom":"1982-01-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605308|P12900|1982-01-04|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C09501","name":"Hatfield Dennie"},"object":{"type":"mine","id":"4605308","name":"No 1"},"validFrom":"1982-01-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605308|C09501|1982-01-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C09501","name":"Hatfield Dennie"},"object":{"type":"operator","id":"P12900","name":"Aurora Mining Company"},"validFrom":"1982-01-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"4605308","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605308|P12900|1982-01-04|C09501|1982-01-04|79825"}}],"coverage":{"historyRecords":4,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4605308","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"}}