{"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":"4201813","name":"Sunnyside Surface Operations"},"operator":{"type":"operator","id":"P20936","name":"Sunnyside Coal Company"},"controller":{"type":"controller","id":"C13463","name":"Sunnyside Mines Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00955","name":"Kaiser Steel Corp"},"object":{"type":"mine","id":"4201813","name":"Sunnyside Surface Operations"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4201813|C00955|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P16663","name":"Kaiser Coal Corp"},"object":{"type":"mine","id":"4201813","name":"Sunnyside Surface Operations"},"validFrom":"1983-03-01","validTo":"1988-08-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4201813|P16663|1983-03-01|1988-08-08"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00955","name":"Kaiser Steel Corp"},"object":{"type":"operator","id":"P16663","name":"Kaiser Coal Corp"},"validFrom":"1983-03-01","validTo":"1988-08-08","current":false,"derived":true,"evidenceMineId":"4201813","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4201813|P16663|1983-03-01|C00955|1950-01-01|51262"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19750","name":"Badgers Unlimited Inc"},"object":{"type":"mine","id":"4201813","name":"Sunnyside Surface Operations"},"validFrom":"1988-08-09","validTo":"1988-12-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4201813|P19750|1988-08-09|1988-12-01"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13514","name":"Daye Walter"},"object":{"type":"mine","id":"4201813","name":"Sunnyside Surface Operations"},"validFrom":"1988-08-09","validTo":"1988-12-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4201813|C13514|1988-08-09|1988-12-01"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13514","name":"Daye Walter"},"object":{"type":"operator","id":"P19750","name":"Badgers Unlimited Inc"},"validFrom":"1988-08-09","validTo":"1988-12-01","current":false,"derived":true,"evidenceMineId":"4201813","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4201813|P19750|1988-08-09|C13514|1988-08-09|90189"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P20936","name":"Sunnyside Coal Company"},"object":{"type":"mine","id":"4201813","name":"Sunnyside Surface Operations"},"validFrom":"1988-12-02","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4201813|P20936|1988-12-02|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13463","name":"Sunnyside Mines Inc"},"object":{"type":"mine","id":"4201813","name":"Sunnyside Surface Operations"},"validFrom":"1988-12-02","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4201813|C13463|1988-12-02|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13463","name":"Sunnyside Mines Inc"},"object":{"type":"operator","id":"P20936","name":"Sunnyside Coal Company"},"validFrom":"1988-12-02","validTo":null,"current":true,"derived":true,"evidenceMineId":"4201813","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4201813|P20936|1988-12-02|C13463|1988-12-02|90080"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4201813","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"}}