MICREX DEVELOPMENT CORP.

A mineral exploration and development company operating in Canada and the United States

TSX Venture Exchange symbol "MIX"
SEC 12 g (3) Exemption 82-4281

For immediate release

September 13, 2006

Magnetite Production Begins In Quebec

Micrex Development Corp. announced today that the Company has been informed that operations on its Quebec Magnetite Property have commenced.

Specialty Minerals Corp. (SMC) has advised the Company that SMC has begun operations at Micrex’s St. Charles Magnetite Property in Quebec.

Under the terms of its arm-length agreement with the Company, SMC will pay all of its mining and processing costs to produce its magnetite products from the St. Charles property.

SMC will be producing magnetite products for its own current markets and will be working with Micrex to supply additional markets that Micrex has identified.

Under the terms of their Agreement with SMC, Micrex will receive a royalty of $15 per tonne of finished product plus a 10% net profit share.

Neither party is in a position at this time to estimate when and how much finished product will be produced this year.

Further information may be obtained from Perry Meszaros or S.E. Marshall at (780) 448-0922
or email at mixinfo-1@mixcorp.com

Web site address: www.mixcorp.com

MICREX DEVELOPMENT CORP.

Peace River Diamond Property • Burmis Magnetite/Titanium Property • St. Charles de Bourget Magnetite/Titanium Property • Fort Steel Placer Property • Bighorn Gold Mine • Banks Gold Mine • Mount Royal Gold Mine • Deadwood Gold Mine • Sunburst Gold Property

THE TSX VENTURE EXCHANGE HAS NOT REVIEWED AND DOES NOT ACCEPT RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THIS RELEASE.

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