{"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":"2026-10-17T05:35:58.500035+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":"4200085","name":"J B King Mine"},"operator":{"type":"operator","id":"P08972","name":"Western States Minerals Corp"},"controller":{"type":"controller","id":"C01702","name":"Groves S J & Sons Company"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P02054","name":"Sun Valley Coal Co"},"object":{"type":"mine","id":"4200085","name":"J B King Mine"},"validFrom":"1950-01-01","validTo":"1975-07-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4200085|P02054|1950-01-01|1975-07-01"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01740","name":"Sun Valley Coal Co"},"object":{"type":"mine","id":"4200085","name":"J B King Mine"},"validFrom":"1950-01-01","validTo":"1975-07-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4200085|C01740|1950-01-01|1975-07-01"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01740","name":"Sun Valley Coal Co"},"object":{"type":"operator","id":"P02054","name":"Sun Valley Coal Co"},"validFrom":"1950-01-01","validTo":"1975-07-01","current":false,"derived":true,"evidenceMineId":"4200085","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4200085|P02054|1950-01-01|C01740|1950-01-01|55760"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P02053","name":"Western States Coal Corp"},"object":{"type":"mine","id":"4200085","name":"J B King Mine"},"validFrom":"1975-07-02","validTo":"1976-04-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4200085|P02053|1975-07-02|1976-04-04"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01739","name":"Heiner Claude"},"object":{"type":"mine","id":"4200085","name":"J B King Mine"},"validFrom":"1975-07-02","validTo":"1976-04-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4200085|C01739|1975-07-02|1976-04-04"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01739","name":"Heiner Claude"},"object":{"type":"operator","id":"P02053","name":"Western States Coal Corp"},"validFrom":"1975-07-02","validTo":"1976-04-04","current":false,"derived":true,"evidenceMineId":"4200085","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4200085|P02053|1975-07-02|C01739|1975-07-02|55759"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P08972","name":"Western States Minerals Corp"},"object":{"type":"mine","id":"4200085","name":"J B King Mine"},"validFrom":"1976-04-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4200085|P08972|1976-04-05|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01702","name":"Groves S J & Sons Company"},"object":{"type":"mine","id":"4200085","name":"J B King Mine"},"validFrom":"1976-04-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4200085|C01702|1976-04-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01702","name":"Groves S J & Sons Company"},"object":{"type":"operator","id":"P08972","name":"Western States Minerals Corp"},"validFrom":"1976-04-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"4200085","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4200085|P08972|1976-04-05|C01702|1976-04-05|55671"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4200085","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}