{"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":"4400289","name":"No 1 Strip"},"operator":{"type":"operator","id":"P17001","name":"General Trucking Corp"},"controller":{"type":"controller","id":"C12012","name":"Browning Denver"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P02778","name":"Stamack Mining Company Limited"},"object":{"type":"mine","id":"4400289","name":"No 1 Strip"},"validFrom":"1950-01-01","validTo":"1972-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400289|P02778|1950-01-01|1972-06-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02388","name":"Womack Don R"},"object":{"type":"mine","id":"4400289","name":"No 1 Strip"},"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":"4400289|C02388|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02388","name":"Womack Don R"},"object":{"type":"operator","id":"P02778","name":"Stamack Mining Company Limited"},"validFrom":"1950-01-01","validTo":"1972-06-30","current":false,"derived":true,"evidenceMineId":"4400289","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400289|P02778|1950-01-01|C02388|1950-01-01|58308"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P03700","name":"General Trucking Corp"},"object":{"type":"mine","id":"4400289","name":"No 1 Strip"},"validFrom":"1972-07-01","validTo":"1985-07-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400289|P03700|1972-07-01|1985-07-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C03049","name":"Jessee Bill W"},"object":{"type":"mine","id":"4400289","name":"No 1 Strip"},"validFrom":"1972-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400289|C03049|1972-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C03049","name":"Jessee Bill W"},"object":{"type":"operator","id":"P03700","name":"General Trucking Corp"},"validFrom":"1972-07-01","validTo":"1985-07-30","current":false,"derived":true,"evidenceMineId":"4400289","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400289|P03700|1972-07-01|C03049|1972-07-01|61795"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P17001","name":"General Trucking Corp"},"object":{"type":"mine","id":"4400289","name":"No 1 Strip"},"validFrom":"1985-07-31","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400289|P17001|1985-07-31|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12012","name":"Browning Denver"},"object":{"type":"mine","id":"4400289","name":"No 1 Strip"},"validFrom":"1985-07-31","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400289|C12012|1985-07-31|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12012","name":"Browning Denver"},"object":{"type":"operator","id":"P17001","name":"General Trucking Corp"},"validFrom":"1985-07-31","validTo":null,"current":true,"derived":true,"evidenceMineId":"4400289","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400289|P17001|1985-07-31|C12012|1985-07-31|85903"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4400289","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"}}