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MEI Online: Plant Operation News: Africa: April 6th 2005


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:: Anvil Revises Plans for Kulumaziba Tailings Project

Anvil Mining Ltd has decided to substantially revise its development plans for the starter-project on the Kulumaziba coarse rejects/tailings deposit, located in the Kolwezi Region of the Congo, due to higher than expected copper grades being found at the upstream section of the deposit.

Bill Turner, President and CEO of Anvil Mining, said: "The first stage of the development will now utilize the surplus Heavy Media Separation (HMS) plant from the company's Dikulushi Mine rather than building a new, larger HMS plant. This approach will enable a more rapid development of this starter-project and reduce the development costs by more than 50%.

As was the case with the first stage of the Dikulushi Mine development, tailings from the proposed Kulumaziba HMS operation will be stored in a retention dam for subsequent reprocessing. The revised approach will provide the company with sufficient copper oxide concentrate production (grading approximately 30% copper) to justify development of a solvent extraction electro-winning (SXEW) facility to produce cathode copper for sale in the DRC.

The Kulumaziba coarse rejects/tailings deposit comprises mineralized material from a former washing plant operated at the Mutoshi Mine between 1960 and 1987, and discharged into the Kulumaziba watercourse. Recent sampling of the narrower first 7.5km of the deposit to a depth of 3m has outlined an inferred mineral resource of 1.5 million tonnes at 6.8% copper using a top cut of 11.5% for approximately 102,000 tonnes of contained copper.

The resource has been estimated to a vertical depth of only 3m because samples could only be taken with safety to this depth during the wet season. Below a depth of 3m, there is a further tonnage of coarse rejects/tailings of approximately 300,000 tonnes (established through spiral auger testing) which will be sampled by test pitting after the end of the wet season.

Sampling of the downstream section of the river, which is considerably wider than the upstream section and very water-logged at this time of year, will commence in approximately two months after the wet season is finished. Once the sampling of the downstream section of the creek is completed, the company expects to establish a total target containing in the region of 200,000 tonnes of copper.

"The revised development plans for the starter-project on the Kulumaziba deposit will provide the company with a sizeable stream of oxide copper concentrates that would justify examining downstream processing options," Mr Turner said.

"This is the direction in which we have always wanted to move with our new oxide copper projects in the DRC Copperbelt. The combination of higher than expected resource grades and readily available plant make the decision rather straightforward".




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