{"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":"1519098","name":"Wolf Creek Surface #3"},"operator":{"type":"operator","id":"0095145","name":"T & T Energy LLC"},"controller":{"type":"controller","id":"0080113","name":"Amy C  Hamilton"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"0066091","name":"David L  Hansen"},"object":{"type":"mine","id":"1519098","name":"Wolf Creek Surface #3"},"validFrom":"2007-02-08","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519098|0066091|2007-02-08|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0078664","name":"DRT Grading & Excavating Inc"},"object":{"type":"mine","id":"1519098","name":"Wolf Creek Surface #3"},"validFrom":"2007-04-09","validTo":"2009-08-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519098|0078664|2007-04-09|2009-08-27"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0066091","name":"David L  Hansen"},"object":{"type":"operator","id":"0078664","name":"DRT Grading & Excavating Inc"},"validFrom":"2007-04-09","validTo":"2009-08-27","current":false,"derived":true,"evidenceMineId":"1519098","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519098|0078664|2007-04-09|0066091|2007-02-08|9165"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0080113","name":"Amy C  Hamilton"},"object":{"type":"mine","id":"1519098","name":"Wolf Creek Surface #3"},"validFrom":"2008-08-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519098|0080113|2008-08-16|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0103886","name":"Leslie Mountain Coal Company Inc."},"object":{"type":"mine","id":"1519098","name":"Wolf Creek Surface #3"},"validFrom":"2009-08-28","validTo":"2009-11-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519098|0103886|2009-08-28|2009-11-01"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0087915","name":"Chester  Foster"},"object":{"type":"mine","id":"1519098","name":"Wolf Creek Surface #3"},"validFrom":"2009-08-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519098|0087915|2009-08-28|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0087915","name":"Chester  Foster"},"object":{"type":"operator","id":"0103886","name":"Leslie Mountain Coal Company Inc."},"validFrom":"2009-08-28","validTo":"2009-11-01","current":false,"derived":true,"evidenceMineId":"1519098","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519098|0103886|2009-08-28|0087915|2009-08-28|14133"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0095145","name":"T & T Energy LLC"},"object":{"type":"mine","id":"1519098","name":"Wolf Creek Surface #3"},"validFrom":"2009-11-02","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519098|0095145|2009-11-02|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0080113","name":"Amy C  Hamilton"},"object":{"type":"operator","id":"0095145","name":"T & T Energy LLC"},"validFrom":"2009-11-02","validTo":null,"current":true,"derived":true,"evidenceMineId":"1519098","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519098|0095145|2009-11-02|0080113|2008-08-16|12599"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1519098","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"}}