{"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":"1518252","name":"Mine #7"},"operator":{"type":"operator","id":"P21938","name":"Carbon River Coal Corp"},"controller":{"type":"controller","id":"C13425","name":"Ricky D  Kirk; Jerry  Wells Jr"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13425","name":"Ricky D  Kirk  et al"},"object":{"type":"mine","id":"1518252","name":"Mine #7"},"validFrom":"1984-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518252|C13425|1984-06-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15538","name":"Jerry  Bentley et al"},"object":{"type":"mine","id":"1518252","name":"Mine #7"},"validFrom":"1997-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518252|C15538|1997-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23645","name":"Simp-A-Lex Inc"},"object":{"type":"mine","id":"1518252","name":"Mine #7"},"validFrom":"2000-04-01","validTo":"2000-10-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518252|P23645|2000-04-01|2000-10-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15538","name":"Jerry  Bentley et al"},"object":{"type":"operator","id":"P23645","name":"Simp-A-Lex Inc"},"validFrom":"2000-04-01","validTo":"2000-10-31","current":false,"derived":true,"evidenceMineId":"1518252","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518252|P23645|2000-04-01|C15538|1997-01-01|95922"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P21938","name":"Carbon River Coal Corp"},"object":{"type":"mine","id":"1518252","name":"Mine #7"},"validFrom":"2000-11-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518252|P21938|2000-11-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13425","name":"Ricky D  Kirk  et al"},"object":{"type":"operator","id":"P21938","name":"Carbon River Coal Corp"},"validFrom":"2000-11-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1518252","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518252|P21938|2000-11-01|C13425|1984-06-01|89883"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13425","name":"Jerry  Wells Jr  et al"},"object":{"type":"operator","id":"P21938","name":"Carbon River Coal Corp"},"validFrom":"2000-11-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1518252","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518252|P21938|2000-11-01|C13425|1984-06-01|89884"}}],"coverage":{"historyRecords":3,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1518252","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"}}