Abacus Mining & Exploration Corporation, an exploration stage company, engages in the acquisition, exploration, and development of mineral properties in Canada. The company currently focused on its optioned Willow copper-gold property located near Yerington, Nevada in which it can acquire up to a 75% ownership interest, and the contiguous Nev-Lorraine claims. It also holds a 20% ownership interest in the proposed copper-gold Ajax Mine located southwest of Kamloops, British Columbia. The company was founded in 1983 and is based in Vancouver, Canada.