{"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":"1515658","name":"#3"},"operator":{"type":"operator","id":"P23057","name":"Chestnut Ridge Coal Company Inc"},"controller":{"type":"controller","id":"C15211","name":"Boyd Rocky"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01400","name":"Rogers K C"},"object":{"type":"mine","id":"1515658","name":"#3"},"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":"1515658|C01400|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P01656","name":"K C Rogers Coal Company Inc"},"object":{"type":"mine","id":"1515658","name":"#3"},"validFrom":"1986-06-01","validTo":"1992-02-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515658|P01656|1986-06-01|1992-02-19"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01400","name":"Rogers K C"},"object":{"type":"operator","id":"P01656","name":"K C Rogers Coal Company Inc"},"validFrom":"1986-06-01","validTo":"1992-02-19","current":false,"derived":true,"evidenceMineId":"1515658","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515658|P01656|1986-06-01|C01400|1950-01-01|53930"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13890","name":"Stumbo Glenda & Jeff"},"object":{"type":"mine","id":"1515658","name":"#3"},"validFrom":"1991-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515658|C13890|1991-06-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P21500","name":"Mill Branch Coal Company Inc"},"object":{"type":"mine","id":"1515658","name":"#3"},"validFrom":"1992-02-20","validTo":"1993-05-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515658|P21500|1992-02-20|1993-05-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13890","name":"Stumbo Glenda & Jeff"},"object":{"type":"operator","id":"P21500","name":"Mill Branch Coal Company Inc"},"validFrom":"1992-02-20","validTo":"1993-05-09","current":false,"derived":true,"evidenceMineId":"1515658","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515658|P21500|1992-02-20|C13890|1991-06-01|91410"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P22333","name":"Mill Branch Coal Company Inc"},"object":{"type":"mine","id":"1515658","name":"#3"},"validFrom":"1993-05-10","validTo":"1995-01-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515658|P22333|1993-05-10|1995-01-16"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C14840","name":"Tackett Curtis M & John G"},"object":{"type":"mine","id":"1515658","name":"#3"},"validFrom":"1993-05-10","validTo":"1995-01-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515658|C14840|1993-05-10|1995-01-16"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C14840","name":"Tackett Curtis M & John G"},"object":{"type":"operator","id":"P22333","name":"Mill Branch Coal Company Inc"},"validFrom":"1993-05-10","validTo":"1995-01-16","current":false,"derived":true,"evidenceMineId":"1515658","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515658|P22333|1993-05-10|C14840|1993-05-10|94038"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15211","name":"Boyd Rocky"},"object":{"type":"mine","id":"1515658","name":"#3"},"validFrom":"1994-06-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515658|C15211|1994-06-21|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23057","name":"Chestnut Ridge Coal Company Inc"},"object":{"type":"mine","id":"1515658","name":"#3"},"validFrom":"1995-01-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515658|P23057|1995-01-17|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15211","name":"Boyd Rocky"},"object":{"type":"operator","id":"P23057","name":"Chestnut Ridge Coal Company Inc"},"validFrom":"1995-01-17","validTo":null,"current":true,"derived":true,"evidenceMineId":"1515658","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515658|P23057|1995-01-17|C15211|1994-06-21|95029"}}],"coverage":{"historyRecords":4,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1515658","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"}}