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

November 15, 2011

St. Charles, Québec Property Update

Micrex Development Corp. (TSX.V: MIX) announces the commencement of an exploratory drilling program on its magnetite deposit in Québec.

The initial stage is for 21 holes, at 100 metre intervals. These holes will also be angled and drilled in l00 metre lengths. One hole will be drilled vertically to depth.

After these holes are drilled and studied, additional holes will be drilled at 50 and 25 metre spacing to meet the requirements for formal classification as reserves. It is expected that the entire drilling program will be completed this month.

Micrex has also shipped a 15 ton sample of material, crushed to inch size, to Newcastle, England for use in a pilot test of grinding machinery. This will help in the design and construction of a plant to be built next year. The plant will be used to make heavy media for the water purification industry in Québec and the U.S. Atlantic seaboard. It is estimated the demand from this market is at least 90 thousand tons per year.

The Corem lab in Québec City is currently testing a large rock sample from the property to determine the best separation method, and to assist in the design of the processing facility.

Micrex will advise further as results are tabulated.

This drilling program is under the direction of IOS Services Géoscientifiques Inc.

Micrex Development Corp. (TSX.V: MIX) is a mineral exploration company based in Alberta, Canada with mining properties in North America. Current focus is on the St. Charles de Bourget magnetite / titanium / apatite property in Québec.

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.

Burmis Magnetite/Titanium Property - St. Charles de Bourget Magnetite/Titanium/Apatite Property - Fort Steel Placer Property - Bighorn Gold Mine - Mount Royal Gold Mine - Deadwood Gold Mine - Sunburst Gold Property

NEITHER THE TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICE PROVIDER (AS THAT TERM IS DEFINED IN THE POLICIES OF THE TSX VENTURE EXCHANGE) ACCEPTS RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THIS RELEASE.

FORWARD LOOKING STATEMENTS

Certain statements in this news release are "forward-looking statements", which reflect management's expectations regarding its property and business operations. All statements other than statements of historical fact contained in this news release are forward-looking statements. Such forward-looking statements involve risks and uncertainties, as they reflect management's current beliefs and are based on information currently available to management. Actual results may differ materially from those anticipated in the statements made. The forward-looking statements are expressly qualified in their entirety by this cautionary statement. The forward-looking statements are made as of the date of this news release and Micrex assumes no obligation to update or revise them to reflect new events or circumstances except as expressly required by applicable securities law. Further information regarding the uncertainties and risks can be found in the disclosure documents filed by Micrex with the securities regulatory authorities, available at www.sedar.com