{"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":"4400382","name":"No 1 Mine"},"operator":{"type":"operator","id":"P18276","name":"Sequoyah Resources Inc"},"controller":{"type":"controller","id":"C13340","name":"Kenneth L  Stacy"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P00168","name":"Black Diamond Fuel Company"},"object":{"type":"mine","id":"4400382","name":"No 1 Mine"},"validFrom":"1950-01-01","validTo":"1986-09-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400382|P00168|1950-01-01|1986-09-15"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00113","name":"Fields Resources Inc"},"object":{"type":"mine","id":"4400382","name":"No 1 Mine"},"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":"4400382|C00113|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00113","name":"Fields Resources Inc"},"object":{"type":"operator","id":"P00168","name":"Black Diamond Fuel Company"},"validFrom":"1950-01-01","validTo":"1986-09-15","current":false,"derived":true,"evidenceMineId":"4400382","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400382|P00168|1950-01-01|C00113|1950-01-01|44246"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13340","name":"Kenneth L  Stacy"},"object":{"type":"mine","id":"4400382","name":"No 1 Mine"},"validFrom":"1986-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400382|C13340|1986-02-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P18276","name":"Sequoyah Resources Inc"},"object":{"type":"mine","id":"4400382","name":"No 1 Mine"},"validFrom":"1986-09-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400382|P18276|1986-09-16|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13340","name":"Kenneth L  Stacy"},"object":{"type":"operator","id":"P18276","name":"Sequoyah Resources Inc"},"validFrom":"1986-09-16","validTo":null,"current":true,"derived":true,"evidenceMineId":"4400382","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400382|P18276|1986-09-16|C13340|1986-02-01|89273"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4400382","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"}}