Mutoshi Project - Overview

The Mutoshi Project is an exploration and mining joint venture between Anvil (70%), and Gécamines, the DRC state-owned mining company (30%). The project is being operated through a special purpose joint venture company, Société Minière de Kolwezi sprl ("SMK"). The 47.6 km PE 2604 ("Mutoshi") lease and 57.8 km. PER 2812 ("Kulumaziba”) lease cover the deposits.

The Mutoshi Project Stage I HMS operation was developed in 2005 to process coarse reject tailings in the Kulumaziba Valley near the Mutoshi open pit in the Kolwezi region. Copper concentrates produced in 2008 were trucked and sold to a smelter in Kolwezi 10 kilometres from the mine. Concentrate was also exported to Zambia and to South Africa for shipment offshore.

Mutoshi Project HMS Plant

History

The tailings deposits in the Kulumaziba Valley were deposited between 1960 and 1987 by the copper processing facility established at Mutoshi by Gécamines. Only the coarser concentrate material was shipped to the concentrator. The fines, up to and including nodules of massive malachite to 5cm diameter were discharged as tailings into the Kulumaziba watercourse. The Kulu tailings deposit was a high-grade, coarse-grained, malachite-rich concentration of tailings that extends downstream for a distance of approximately 14.5 kilometres. The area has two generations of tailings (initially fine grained lower grade tailings were discharged during the 1960s and early 1970s followed by coarser high grade tailings discharged until the project closed in 1987).

Mutoshi Project Stage I Tailing Operation Klumaziba Watercourse