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

April 4, 2011

St. Charles Vanadium Generates Interest

Micrex Development Corp. (TSX.V: MIX) announces an update on the St. Charles Québec Magnetite / Titanium / Apatite / Rare Earth / Vanadium deposit.

Micrex announced on March 24, 2010 that a large international mining conglomerate conducted assays on samples from the St. Charles deposit. In addition to magnetite, titanium, apatite and rare earths, these samples all yielded 0.4% vanadium.

Interest in the vanadium component of the deposit is increasing as new vanadium-based technologies signal a breakthrough in the quest for environmentally-friendly electrical energy sources. Electricity generated from cyclical sources such as solar and wind can be stored in large tanks of vanadium ions, and prototypes are now being tested in several locations around the world. Other types of vanadium cells can store more energy than conventional lithium-ion batteries, and can be recharged more quickly. This could result in up to 10 times more range for electric cars, and recharging times measured in minutes instead of hours.

These developments have been touted by world leaders, and are causing increased interest in the vanadium component of the St. Charles deposit. In view of this, Micrex has commissioned the lab at McGill University to conduct a new series of tests on the non-magnetic samples previously separated, and the large international mining company has requested additional samples for more testing.

Micrex is very excited about this valued added product and the new possibilities it brings to the Company.

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 / rare earth / vanadium property in Québec.

This press release has been reviewed by M. Réjean Girard, geologist and head director of IOS Services Géoscientifiques Inc. and the Company's Qualified Person for this project under the meaning of NI 43-101.

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/Rare Earth Property - Fort Steel Placer Property - Bighorn Gold Mine - Banks 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