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Projects

Altynalmas Gold, Kazakhstan

 

Resources
The Bakyrchik gold deposits contains an estimated 8.74 million tonnes of Indicated Resources at an average gold grade of 8.83 g/t, containing 2.48 million ounces of gold, and an additional 15.22 million tonnes of Inferred Resources at an average gold grade of 9.00 g/t, containing 4.41 million ounces of gold. The independent NI 43-101 estimate used a nominal gold cut-off grade of 3 g/t and was prepared in August 2007 by Scott Wilson Roscoe Postle Associates Inc., of Toronto, Canada.

Drilling underway at Bakyrchik Gold Project
Altynalmas Gold has commenced an initial 33,000-metre deep-level drilling program at the Bakyrchik Gold Project intended to upgrade the present mineral resource to provide the basis for future project financing. The drilling program is expected to be completed by April 2011. In addition, Altynalmas Gold plans to commence a 6,000-metre, near-surface drilling program in early 2010 to drill open-pit targets. Following completion of the drilling program, Altynalmas Gold plans to complete a feasibility study.

Construction of a 100,000-tonne-per-year rotary kiln (Pilot Roaster) began in September 2007 and was completed in December 2008. The purpose of the Pilot Roaster plant is to assess the viability of single-stage roasting, using a rotary kiln as outlined in the work program approved by Kazakhstan's Ministry of Energy and Mineral Resources. On April 18, 2009, a decision was made to shut down the Pilot Roaster until further modifications were made to the ore preparation and rotary kiln. Given an increased understanding of the mineralogical characteristics of the Bakyrchik ores, it remains unlikely that recoveries greater than 60% can be achieved by single-stage roasting.

Following the completion of laboratory bench-scale and pilot testwork, the solution to successfully treating Bakyrchik ores appears to be fluidized-bed roasting involving two stages: a reductive first stage, followed by an oxidative second stage. Whereas the reductive first stage volatizes and drives off arsenic, the oxidative stage oxidizes sulphur and carbon. Altynalmas Gold believes that gold recoveries of 85% to 88% can be realized in a commercial-scale plant. Following pilot testwork, the technology is scalable into commercial use. Preliminary design work has commenced as part of a pre-feasibility study.