AngloGold Ashanti’s extension leads to new Tanzania contract mining 19 AngloGold Ashanti’s extension leads to new Tanzania contract mining In line with its strategy to ensure a sustainable contribution to the economies in host countries, AngloGold Ashanti has facilitated establishment of the BG Umoja joint venture in Tanzania, - -which has been awarded the $186m worth two-year mining contract for the Nyankanga and Geita Hill underground mining projects. The 80/20 joint venture is a partnership between Africa Underground Mining Services (AUMS) Tanzania, a subsidiary of Australia’s Perenti Group, and local drilling services and mining-supply company, Geofields Tanzania Limited. The partnership is modelled on a similar underground mining joint venture at the Obuasi Redevelopment Project in Ghana between AUMS Ghana and Accra-based, wholly Ghanaian-owned Rocksure and will help build local specialised mining capacity.