{"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":"3503831","name":"Millbank Materials USA, LTD"},"operator":{"type":"operator","id":"0138973","name":"Millbank Materials USA"},"controller":{"type":"controller","id":"0180321","name":"Bruce  McGillivray; Marjory  Rattee"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0138973","name":"Millbank Materials USA"},"object":{"type":"mine","id":"3503831","name":"Millbank Materials USA, LTD"},"validFrom":"2015-05-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503831|0138973|2015-05-28|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0118261","name":"Doug  McGillivray"},"object":{"type":"mine","id":"3503831","name":"Millbank Materials USA, LTD"},"validFrom":"2015-05-28","validTo":"2020-10-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503831|0118261|2015-05-28|2020-10-05"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0118261","name":"Doug  McGillivray"},"object":{"type":"operator","id":"0138973","name":"Millbank Materials USA"},"validFrom":"2015-05-28","validTo":"2020-10-05","current":false,"derived":true,"evidenceMineId":"3503831","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503831|0138973|2015-05-28|0118261|2015-05-28|22594"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0159721","name":"Estate of Douglas G. McGillivray"},"object":{"type":"mine","id":"3503831","name":"Millbank Materials USA, LTD"},"validFrom":"2020-10-06","validTo":"2023-09-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503831|0159721|2020-10-06|2023-09-20"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0159721","name":"Estate of Douglas G. McGillivray"},"object":{"type":"operator","id":"0138973","name":"Millbank Materials USA"},"validFrom":"2020-10-06","validTo":"2023-09-20","current":false,"derived":true,"evidenceMineId":"3503831","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503831|0138973|2015-05-28|0159721|2020-10-06|33183"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0180321","name":"Marjory  Rattee et al"},"object":{"type":"mine","id":"3503831","name":"Millbank Materials USA, LTD"},"validFrom":"2023-09-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503831|0180321|2023-09-21|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0180321","name":"Marjory  Rattee et al"},"object":{"type":"operator","id":"0138973","name":"Millbank Materials USA"},"validFrom":"2023-09-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"3503831","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503831|0138973|2015-05-28|0180321|2023-09-21|38556"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0180321","name":"Bruce  McGillivray et al"},"object":{"type":"operator","id":"0138973","name":"Millbank Materials USA"},"validFrom":"2023-09-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"3503831","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3503831|0138973|2015-05-28|0180321|2023-09-21|38557"}}],"coverage":{"historyRecords":4,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3503831","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"}}