A mining company, Adamus Resources, has been granted three new mineral reconnaissance licences to explore for gold deposits. The company, which is listed on the Australian Securities Exchange, the TSX Venture Exchange and the Frankfurt Stock Exchange Open Market, already has a successful gold-mining operation in Ghana. The exploration areas under the new licences are located in western Liberia, near the towns of Bopulu, Fasama and Mambo, and close to the New Liberty operating area of African Aura Mining, where gold deposits have recently been discovered. The company chose these sites because they are close to existing alluvial gold mines and are in the Archean belts, known for having gold. Gold-prospecting is proving an important new area of investment in the country; other exploration companies include Hummingbird Resources (UK), which is active in the south-east of the country (March 2011, The domestic economy). Exploration by Hummingbird Resources in its Dugbe site has shown great potential so far, with every one of 93 exploration holes that it drilled last year showing evidence of gold deposits.