Technical Reports

Barrick Gold Properties, Worldwide

Barrick Gold Corporation (2012)

To review mineral resource and mineral reserve estimates, and to prepare NI 43-101 Technical Reports for Barrick’s gold and gold-copper properties, across five continents.

RPA’s involvement with Barrick dates back to 2004, when RPA was retained to complete a review of Barrick’s mineral reserve estimation process and procedures required to meet the Securities and Exchange Commission regulations for annual reporting in the USA.  Since that time, RPA has carried out a number of reviews and audits for Barrick and in 2011 was retained to prepare NI 43-101 Technical Reports for more than 20 gold and gold-copper properties owned by Barrick. 

 Eight of the reports have been filed on SEDAR to support public disclosure for the client.  The eight properties included the Goldstrike open pit and underground gold mine in Nevada, USA; the Cortez open pit, heap leach operation in Nevada, USA; the Porgera open pit and underground gold mine in Papua New Guinea; the Veladero open pit, heap leach gold and silver mine in Argentina; the Lumwana open pit gold mine in Zambia; the Lagunas Norte open pit, heap leach gold and silver mine in Peru; the Zaldívar open pit, heap leach gold and copper mine in Chile; and the Pueblo Viejo gold-copper-silver project for the development of an open pit mine in the Dominican Republic.

RPA visited each property where data was collected and operations were inspected.  RPA reviewed the methods, procedures, and results of the mineral resource and mineral reserve estimation methods using various validation techniques. The mining methods, reconciliation results, and life of mine plans were also reviewed by RPA.  In addition, RPA independently confirmed that all reported mineral reserves could be economically extracted and processed.

RPA continues to complete assignments for Barrick Gold Corporation.

Uranium Mines and Properties, Kazakhstan

Uranium One Inc.

Preliminary Assessment, Audits and Updates of Mineral Resources and Mineral Reserves and NI 43-101 Technical Reports.

Uranium One is a Canadian based company listed on the Toronto and Johannesburg Stock Exchanges. Uranium One has an interest in five operating in situ recovery uranium mines (Akdala, South Inkai, Karatau, Akbastau, Zarechnoye), and one advanced development in situ recovery project (Kharasan), in south-central Kazakhstan.

RPA’s involvement with the projects dates back to 2006 when RPA (then Scott Wilson RPA) reclassified resources and (where present) reserves from the Russian classification, updated the resource and reserve estimates, and prepared NI 43-101 Technical Reports for the Akdala, South Inkai and Kharasan development projects for UrAsia Energy, predecessor to Uranium One.

In 2007, RPA audited the resource estimate and prepared a NI 43-101 Technical Report for the Karatau project for Effective Energy NV, a subsidiary of JSC Atomredmetzoloto, from which Uranium One acquired its interests in the Karatau, Akbastau and Zarechnoye mines.

In 2008, RPA completed a resource audit and NI 43-101 compliant Preliminary Assessment on the Akbastau development project and recommended that Effective Energy carry out further drilling and advance the project towards a prefeasibility study. Production commenced at Akbastau in 2009. RPA completed an updated resource estimate, Preliminary Assessment and NI 43-101 Technical Report in March 2010. Based on the current Mineral Resources, RPA estimated a remaining mine life of 14 years, as of January 1, 2010.

In 2010, RPA also completed Mineral Resource updates and NI 43-101 Technical Reports for the Karatau, Zarechnoye, and Akdala mines.

RPA continues to update the NI 43-101 Technical Reports for the Uranium One properties in Kazakhstan.