{"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":"2602370","name":"Steer Offices"},"operator":{"type":"operator","id":"0139513","name":"Jerritt Canyon Gold LLC"},"controller":{"type":"controller","id":"0161961","name":"First  Majestic Silver Corporation"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03039","name":"Independence Mining Co Inc et al"},"object":{"type":"mine","id":"2602370","name":"Steer Offices"},"validFrom":"1980-02-01","validTo":"1999-09-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602370|M03039|1980-02-01|1999-09-27"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07980","name":"Queenstake Resources Ltd"},"object":{"type":"mine","id":"2602370","name":"Steer Offices"},"validFrom":"1988-04-27","validTo":"2007-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602370|M07980|1988-04-27|2007-09-30"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09376","name":"Independence Mining Company Inc"},"object":{"type":"mine","id":"2602370","name":"Steer Offices"},"validFrom":"1999-01-01","validTo":"1999-09-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602370|L09376|1999-01-01|1999-09-27"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03039","name":"Independence Mining Co Inc et al"},"object":{"type":"operator","id":"L09376","name":"Independence Mining Company Inc"},"validFrom":"1999-01-01","validTo":"1999-09-27","current":false,"derived":true,"evidenceMineId":"2602370","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602370|L09376|1999-01-01|M03039|1980-02-01|127720"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L17002","name":"Anglogold (Jerritt Canyon) Corp"},"object":{"type":"mine","id":"2602370","name":"Steer Offices"},"validFrom":"1999-09-28","validTo":"2003-06-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602370|L17002|1999-09-28|2003-06-24"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M12973","name":"Anglogold Ltd & Meridian Gold Company"},"object":{"type":"mine","id":"2602370","name":"Steer Offices"},"validFrom":"1999-09-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602370|M12973|1999-09-28|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12973","name":"Anglogold Ltd & Meridian Gold Company"},"object":{"type":"operator","id":"L17002","name":"Anglogold (Jerritt Canyon) Corp"},"validFrom":"1999-09-28","validTo":"2003-06-24","current":false,"derived":true,"evidenceMineId":"2602370","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602370|L17002|1999-09-28|M12973|1999-09-28|155071"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10244","name":"Queenstake Resources U.S.A. , Inc."},"object":{"type":"mine","id":"2602370","name":"Steer Offices"},"validFrom":"2003-06-25","validTo":"2015-06-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602370|L10244|2003-06-25|2015-06-23"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07980","name":"Queenstake Resources Ltd"},"object":{"type":"operator","id":"L10244","name":"Queenstake Resources U.S.A. , Inc."},"validFrom":"2003-06-25","validTo":"2007-09-30","current":false,"derived":true,"evidenceMineId":"2602370","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602370|L10244|2003-06-25|M07980|1988-04-27|142465"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0071711","name":"Veris Gold Corp."},"object":{"type":"mine","id":"2602370","name":"Steer Offices"},"validFrom":"2007-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602370|0071711|2007-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0071711","name":"Veris Gold Corp."},"object":{"type":"operator","id":"L10244","name":"Queenstake Resources U.S.A. , Inc."},"validFrom":"2007-10-01","validTo":"2015-06-23","current":false,"derived":true,"evidenceMineId":"2602370","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602370|L10244|2003-06-25|0071711|2007-10-01|10458"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0139513","name":"Jerritt Canyon Gold LLC"},"object":{"type":"mine","id":"2602370","name":"Steer Offices"},"validFrom":"2015-06-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602370|0139513|2015-06-24|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0118681","name":"Eric  Sprott et al"},"object":{"type":"mine","id":"2602370","name":"Steer Offices"},"validFrom":"2015-06-24","validTo":"2021-04-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602370|0118681|2015-06-24|2021-04-29"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0118681","name":"Eric  Sprott et al"},"object":{"type":"operator","id":"0139513","name":"Jerritt Canyon Gold LLC"},"validFrom":"2015-06-24","validTo":"2021-04-29","current":false,"derived":true,"evidenceMineId":"2602370","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602370|0139513|2015-06-24|0118681|2015-06-24|22705"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0118681","name":"WBOX 2014-1 LTD et al"},"object":{"type":"operator","id":"0139513","name":"Jerritt Canyon Gold LLC"},"validFrom":"2015-06-24","validTo":"2021-04-29","current":false,"derived":true,"evidenceMineId":"2602370","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602370|0139513|2015-06-24|0118681|2015-06-24|22706"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0161961","name":"First  Majestic Silver Corporation"},"object":{"type":"mine","id":"2602370","name":"Steer Offices"},"validFrom":"2021-04-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602370|0161961|2021-04-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0161961","name":"First  Majestic Silver Corporation"},"object":{"type":"operator","id":"0139513","name":"Jerritt Canyon Gold LLC"},"validFrom":"2021-04-30","validTo":null,"current":true,"derived":true,"evidenceMineId":"2602370","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602370|0139513|2015-06-24|0161961|2021-04-30|33902"}}],"coverage":{"historyRecords":7,"edgeCount":17,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2602370","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"}}