Denison Begins Uranium Ore Processing at Utah Mill


Denison Mines Corp. reported that processing of conventional ore at its White Mesa mill in Utah began in late April. According to the company, initial testing of the grinding circuit began on April 21, with the first ore from the Tony M mine fed to the leach circuit on April 28.

Denison said that over the next 30 to 45 days, the mill would process uraniumonly ore from the Tony M operation and will then switch to uranium/vanadium ores from the company’s Colorado Plateau mines. Currently, there are 150,000 short tons of ore from these mines on the stockpile at the mill. Denison currently operates four Colorado Plateau mines, each producing about 350 t/d of ore, and expects to start two additional mines in 2008.

Modernization of the mill’s vanadium circuit and the relining of a tailings cell was on schedule, according to the company. Denison is projecting production of between 1.4 and 1.7 million lb of U3O8 and 3 to 4 million lb of vanadium pentoxide from White Mesa in 2008. Currently, Denison has approximately 170,000 lb of U3O8 in inventory from the processing of alternate feed materials in the first four months of 2008.

Denison also announced that as a result of prior contractual arrangements, the company is receiving another shipment of high grade alternate feed material that contains about 600,000 lb of U3O8. This material could be processed in parallel with the conventional ore, but would entail construction of a separate circuit. The additional production will all be credited to Denison’s account. The construction and operation of the circuit is conditional upon receipt of regulatory approvals.


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