AIM-quoted Uranium Resources says that the drilling programme at the Mtonya Project, Songea, Tanzania confirms its expectations. The uranium explorer says that "conditions favourable for roll-front uranium mineralisation exist well below the already known horizons". "Roll-front uranium deposits form in flat-lying, permeable clastic sediments at the interface of advancing oxidizing groundwater and reducing conditions", it adds.The information garnered from the exploration, along with geological and geochemical modelling, will help in the selection of drilling targets for 2011.