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Copper recovery of 95% at Turgeon

Rimouski, April 21, 2010 - Puma Exploration (PUM-TSXV) has received the results of

metallurgical tests carried out on the Turgeon copper-zinc deposit in New Brunswick. A series of

tests were conducted on the two types of mineralization found in the Turgeon deposit: copper-rich

stockwork zones, and massive sulphide zones carrying copper and zinc mineralization.

The flotation tests produced a copper recovery of 95% and a concentrate with more than 20% Cu

from the stockwork zone. The other tests achieved copper recoveries in excess of 80%. In addition,

it appears that the mineralization in this zone requires relatively little grinding to obtain a good

recovery. Indeed, the optimal grain size is less than 65% minus 200 mesh, and overgrinding may

impair the quality of the concentrate and the recovery, as in Test XP-2.

Results of tests carried out on the copper-rich stockwork zone

Test Sample grade

Cu (%)

Copper content

of concentrate (%)

Recovery (%)

XP-1 3.88 27.2 84.0

XP-2 3.83 17.9 65.4

XP-3 3.90 27.8 91.7

XP-4 3.84 24.8 80.8

XP-5 3.90 23.1 94.7

For the massive copper-zinc sulphide zones the optimal grind for an initial flotation of copper is

similar to that for the stockwork zones: about 65% minus 200 mesh. Taking into account the grades

of the feed and the grades of the tails, the highest possible recovery for the copper is 90%, and 94%

for zinc in the massive sulphide zone. On the other hand, it appears difficult to suppress the zinc

during copper flotation, and additional tests will be necessary to obtain a copper concentrate with a

minimum content of zinc.

It should be noted that this is a preliminary series of unoptimized tests, and that both the

concentrate grade and the recovery are likely to be improved during subsequent testing.

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