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Abstract
Hole BYN-ZK3 intersected a total of over 130 metres of continuous gold, silver and base metal mineralization within which are two major intervals: 16.2 metres grading 0.53 grams per tonne (g/t) gold, 19.98 g/t silver, 0.10% copper, 2.96% lead and 0.48% zinc and 52 metres grading 1.08 g/t gold, 27.40 g/t silver, 0.11% copper, 0.77% lead and 0.35% zinc. This hole is 1,200 metres west of drill hole BYN-ZK1 which intersected 18.2 metres grading 1.1 g/t gold and 28 g/t silver (see news release dated February 23, 2007). BYN-ZK1 was located 500 metres north of the open pit of the Beiya Gold Mine.
A new hole, BYN-ZK4, currently being drilled 160 metres east of BYN-ZK3, has intersected over 200 metres of mineralized and altered rocks similar to those in BYN-ZK3. In both holes the mineralized zone contains variable amounts of oxide and sulfide minerals, including sulfides of copper, zinc and lead (chalcopyrite, sphalerite, and galena). Assay results for hole BYN-ZK4 will follow when drilling and sampling have been completed.
Drill core samples were cut in halves using a diamond saw. One half of the core was sampled and assayed using aqua regia digestion with AAS determination for gold, and hydrochloric/perchloric (HCl/HClO4) digestion with ICP-MS determination for copper, molybdenum, silver, zinc, lead and others (a total of 35 elements). For samples with Cu grade higher than 1%, a four acid (HCl/HNO3/HClO4/HF) digestion method and AAS determination were applied. All the assays were completed at Intertek Laboratory in Beijing in accordance with international standard ISO17025. To maintain independent quality control on the laboratory, duplicate samples are submitted from 5% of sample sites, and replicate samples are submitted for 3% of samples. In addition the laboratories use an extensive range of internal standards. External check assays are routinely performed on check samples submitted independently by the Company to Ultra Trace Analytical Laboratories, Canning Vale, Western Australia.