{"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":"0103554","name":"SHM-30"},"operator":{"type":"operator","id":"0176673","name":"Eagle Highwall Mining Systems, LLC"},"controller":{"type":"controller","id":"0170221","name":"David Michael  Jamison; Petri E Koivula"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"0159801","name":"Mike  Jamison et al"},"object":{"type":"mine","id":"0103554","name":"SHM-30"},"validFrom":"2021-05-26","validTo":"2022-06-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103554|0159801|2021-05-26|2022-06-05"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0176673","name":"Eagle Highwall Mining Systems, LLC"},"object":{"type":"mine","id":"0103554","name":"SHM-30"},"validFrom":"2022-01-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103554|0176673|2022-01-28|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0159801","name":"Mike  Jamison et al"},"object":{"type":"operator","id":"0176673","name":"Eagle Highwall Mining Systems, LLC"},"validFrom":"2022-01-28","validTo":"2022-06-05","current":false,"derived":true,"evidenceMineId":"0103554","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103554|0176673|2022-01-28|0159801|2021-05-26|33328"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0159801","name":"Petri E Koivula et al"},"object":{"type":"operator","id":"0176673","name":"Eagle Highwall Mining Systems, LLC"},"validFrom":"2022-01-28","validTo":"2022-06-05","current":false,"derived":true,"evidenceMineId":"0103554","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103554|0176673|2022-01-28|0159801|2021-05-26|33329"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0159801","name":"John  McNab et al"},"object":{"type":"operator","id":"0176673","name":"Eagle Highwall Mining Systems, LLC"},"validFrom":"2022-01-28","validTo":"2022-06-05","current":false,"derived":true,"evidenceMineId":"0103554","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103554|0176673|2022-01-28|0159801|2021-05-26|33330"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0170221","name":"David Michael  Jamison et al"},"object":{"type":"mine","id":"0103554","name":"SHM-30"},"validFrom":"2022-06-06","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103554|0170221|2022-06-06|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0170221","name":"David Michael  Jamison et al"},"object":{"type":"operator","id":"0176673","name":"Eagle Highwall Mining Systems, LLC"},"validFrom":"2022-06-06","validTo":null,"current":true,"derived":true,"evidenceMineId":"0103554","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103554|0176673|2022-01-28|0170221|2022-06-06|35995"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0170221","name":"Petri E Koivula et al"},"object":{"type":"operator","id":"0176673","name":"Eagle Highwall Mining Systems, LLC"},"validFrom":"2022-06-06","validTo":null,"current":true,"derived":true,"evidenceMineId":"0103554","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103554|0176673|2022-01-28|0170221|2022-06-06|35996"}}],"coverage":{"historyRecords":5,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0103554","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"}}