{"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":"1517142","name":"#1"},"operator":{"type":"operator","id":"P22508","name":"North Star Energy Inc"},"controller":{"type":"controller","id":"C14926","name":"Metcalf Brutus D"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P21640","name":"M C Coal Company Inc"},"object":{"type":"mine","id":"1517142","name":"#1"},"validFrom":"1991-10-01","validTo":"1992-10-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517142|P21640|1991-10-01|1992-10-26"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C14487","name":"Helton Walter M"},"object":{"type":"mine","id":"1517142","name":"#1"},"validFrom":"1991-10-01","validTo":"1992-10-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517142|C14487|1991-10-01|1992-10-26"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C14487","name":"Helton Walter M"},"object":{"type":"operator","id":"P21640","name":"M C Coal Company Inc"},"validFrom":"1991-10-01","validTo":"1992-10-26","current":false,"derived":true,"evidenceMineId":"1517142","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517142|P21640|1991-10-01|C14487|1991-10-01|93014"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P22233","name":"M C Coal Company Inc"},"object":{"type":"mine","id":"1517142","name":"#1"},"validFrom":"1992-10-27","validTo":"1993-06-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517142|P22233|1992-10-27|1993-06-27"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C14787","name":"Shackleford Crystal"},"object":{"type":"mine","id":"1517142","name":"#1"},"validFrom":"1992-10-27","validTo":"1993-06-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517142|C14787|1992-10-27|1993-06-27"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C14787","name":"Shackleford Crystal"},"object":{"type":"operator","id":"P22233","name":"M C Coal Company Inc"},"validFrom":"1992-10-27","validTo":"1993-06-27","current":false,"derived":true,"evidenceMineId":"1517142","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517142|P22233|1992-10-27|C14787|1992-10-27|93895"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P22508","name":"North Star Energy Inc"},"object":{"type":"mine","id":"1517142","name":"#1"},"validFrom":"1993-06-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517142|P22508|1993-06-28|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C14926","name":"Metcalf Brutus D"},"object":{"type":"mine","id":"1517142","name":"#1"},"validFrom":"1993-06-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517142|C14926|1993-06-28|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C14926","name":"Metcalf Brutus D"},"object":{"type":"operator","id":"P22508","name":"North Star Energy Inc"},"validFrom":"1993-06-28","validTo":null,"current":true,"derived":true,"evidenceMineId":"1517142","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517142|P22508|1993-06-28|C14926|1993-06-28|94272"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1517142","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"}}