The Bumbat hard rock gold ore area is situated 220 km west of Ulaanbaatar in the Tuul river valley. About 150 veins have been discovered in this area of 45 sq. km, and seven of these investigated in detail. Gold deposits discovered range from 100m to 800m in length, and are 100-200m deep with vein thickness of 0.8-3.2m, averaging 7-30 g/t gold. Reserves discovered at Bumbat are about 17 tons of gold.