Argex announces 3000% scale up of TiO2 pilot-plant

• Increased production to permit distribution of TiO₂ samples to end-users.

MONTREAL, Dec. 5, 2011 /CNW Telbec/ - Argex Mining Inc. announced today that following the successful completion of the testing of its La Blache ore, it will expand the size of its pilot-plant to 30 times (3000%) its current production capacity. The production capacity of high purity TiO₂ from its 100%-owned deposits will increase from 0.3 kg/day up to 10kg/day.

"The pilot-plant expansion represents a significant milestone," said Roy Bonnell, President and CEO of Argex, "the primary objective of the expansion is to increase the quantity of TiO₂ product samples we can provide to end-users."

Argex expects the pilot-plant expansion to be completed before the end of the first quarter of 2012 and production to begin by the second quarter of 2012. "The scale-up permits us to not only increase production," noted Chief Operating Officer Enrico Di Cesare, "it will also allow us to conduct larger scale testing and continue to optimize the key performance indicators".

Argex recently announced the successful completion of the pilot-plant testing of the ore from its 100%-owned La Blache deposit. Highlights included: repeated and consistent results demonstrating production of 99.8% pure titanium dioxide rutile product directly from run-of-mine material; repeated and consistent results demonstrating titanium dioxide production with brightness and colour in line with or superior to some of the major TiO₂ industry producers; an improved and consistent TiO₂ recovery rate of 90%; organics used in the process recycled more than 100 times successfully demonstrating process viability and TiO₂ produced to the optimal 0.25 microns size.

About Argex Mining Inc.

ARGEX MINING INC. has recently transitioned from a mining exploration company to a near-term producer of commodities that the world needs: Titanium Dioxide, Iron and Vanadium Pentoxide. With a primary goal of advancing rapidly towards production, Argex has adopted a simple and low-risk strategy for the scale-up of its proprietary process that allows it to produce high purity TiO₂ directly from its 100% owned deposit.The closed-loop process is environmentally friendly and produces minimal inert tailings.

Additionally, the Company owns 100% of the Mouchalagane property, which is a large Labrador Trough iron ore property that represents further potential upside for the Argex shareholders.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.