{"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":"1514667","name":"No 2 Mine"},"operator":{"type":"operator","id":"P15849","name":"New Leaf Coal Company Inc"},"controller":{"type":"controller","id":"C07404","name":"Lester James E"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02205","name":"Rose Alvin R & Sammie D"},"object":{"type":"mine","id":"1514667","name":"No 2 Mine"},"validFrom":"1976-05-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514667|C02205|1976-05-18|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P02560","name":"Triple M & K Coal Company"},"object":{"type":"mine","id":"1514667","name":"No 2 Mine"},"validFrom":"1984-06-01","validTo":"1986-03-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514667|P02560|1984-06-01|1986-03-17"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02205","name":"Rose Alvin R & Sammie D"},"object":{"type":"operator","id":"P02560","name":"Triple M & K Coal Company"},"validFrom":"1984-06-01","validTo":"1986-03-17","current":false,"derived":true,"evidenceMineId":"1514667","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514667|P02560|1984-06-01|C02205|1976-05-18|57828"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C07404","name":"Lester James E"},"object":{"type":"mine","id":"1514667","name":"No 2 Mine"},"validFrom":"1984-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514667|C07404|1984-09-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P15849","name":"New Leaf Coal Company Inc"},"object":{"type":"mine","id":"1514667","name":"No 2 Mine"},"validFrom":"1986-03-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514667|P15849|1986-03-18|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C07404","name":"Lester James E"},"object":{"type":"operator","id":"P15849","name":"New Leaf Coal Company Inc"},"validFrom":"1986-03-18","validTo":null,"current":true,"derived":true,"evidenceMineId":"1514667","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514667|P15849|1986-03-18|C07404|1984-09-01|74497"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1514667","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"}}