Adex Announces Filing of NI 43-101 Compliant Preliminary Assessment of the North Zone at Its Mount Pleasant Property

Adex Mining Inc. ("Adex" or the "Company") (TSX VENTURE:ADE) is pleased to
announce the filing of a National Instrument 43-101 ("NI 43-101") compliant
preliminary assessment report (the "PA") on the North Zone ("NZ") of its
wholly-owned Mount Pleasant Mine Property ("Mount Pleasant" or the "Property"),
located in southwestern New Brunswick, Canada with the Ontario, British Columbia
and Alberta securities commissions.


As reported in a press release issued by Adex on December 9, 2009 (Adex Mining
Reports Indium, Zinc and Tin Production Options for Mount Pleasant North Zone -
http://www.adexmining.com/news09122009.php), the results of the PA indicate that
there are two potentially viable production options for the NZ, including the
production of tin concentrate, indium sponge and zinc metal, and the production
of tin concentrate and zinc-indium concentrate. Based on a 10-year projected
life for the NZ and production rate of 850 tonnes per day, the PA shows pre-tax
internal rates of return ("IRR") for the tin concentrate, indium sponge and zinc
metal production option and the tin concentrate and zinc-indium concentrate
production option of 28.87% and 23.49%, respectively.


The press release issued by Adex on December 9, 2009 indicated an after-tax NPV
and IRR for tin concentrate, indium sponge and zinc metal production option of
$54.2 million and 23.94%, respectively, and an after-tax NPV and IRR for tin
concentrate and zinc-indium concentrate production option of $21.5 million and
19.3%, respectively. A modification to the tax computation structure resulted in
the reported after-tax values being slightly higher than the values currently
indicated in the PA. The PA indicates an after-tax NPV and IRR for the tin
concentrate, indium sponge and zinc metal production option of $47.2 million and
22.55%, respectively, and an after-tax NPV and IRR for the tin concentrate and
zinc-indium concentrate production option of $18.1 million and 18.0%,
respectively. The pre-tax NPVs and IRRs are, however, consistent between the
press release issued by Adex on December 9, 2009 and the PA. Adex's position is
not materially affected by the changes in the after-tax results.


The PA and the economic analyses contained therein are preliminary in nature and
contain "Inferred" mineral resources that are considered too speculative
geologically to have the economic considerations applied to them that would
enable them to be categorized as mineral reserves, and there is no certainty
that the PA will be realized with more detailed work. Mineral resources that are
not mineral reserves do not have demonstrated economic viability.


The PA is now available on www.sedar.com.

Qualified Persons

J. Dean Thibault, P. Eng., Senior Process Chemical Engineer and Principal of
Thibault & Associates Inc., an independent qualified person as defined by NI
43-101, supervised the preparation and compilation of the PA and the technical
information related to metallurgical, hydrometallurgical and economic
information contained in this press release in compliance with NI 43-101.


Andrew Hara, P. Eng., Mining Engineer, an independent qualified person as
defined by NI 43-101, supervised the preparation of the technical information
related to mine planning and mining contained in this press release in
compliance with NI 43-101.


Tim R. McKeen, P. Eng., Process Chemical Engineer, an independent qualified
person as defined by NI 43-101, supervised the preparation of the technical
information related to metallurgical processing contained in this press release
in compliance with NI 43-101.


Stephanie M. Scott, P. Eng., Process Chemical Engineer, an independent qualified
person as defined by NI 43-101, supervised the preparation of the technical
information related to hydrometallurgical processing contained in this press
release in compliance with NI 43-101.


Trevor Boyd, P. Geo., the Company's Geological Consultant and a qualified person
as defined by NI 43-101, supervised the preparation of the geological technical
information contained in this press release in compliance with NI 43-101.


ABOUT ADEX

Adex Mining Inc. is a Canadian junior mining company with an experienced
management team. The Company is focused on developing its flagship Mount
Pleasant Mine Property, a multi-metal project that is host to promising
tungsten-molybdenum and tin-indium-zinc-copper mineralization. Located in
Charlotte County, New Brunswick, the Mount Pleasant Mine Property is situated
approximately 80 kilometres south of Fredericton, the provincial capital, and is
65 kilometres from the United States border. The common shares of Adex trade on
the TSX Venture Exchange under the stock symbol "ADE".


FORWARD-LOOKING STATEMENTS

Certain statements in this press release may constitute "forward-looking"
statements which involve known and unknown risks, uncertainties and other
factors which may cause actual results, performance or achievements of Adex, its
subsidiary or the industry in which they operate to be materially different from
any future results, performance or achievements expressed or implied by such
forward-looking statements. When used in this press release, the words
"estimate", "believe", "anticipate", "intend", "expect", "plan", "may",
"should", "will", the negative thereof or other variations thereon or comparable
terminology are intended to identify forward-looking statements. Such statements
reflect the current expectations of the management of Adex with respect to
future events based on currently available information and are subject to risks
and uncertainties that could cause actual results, performance or achievements
to differ materially from those expressed or implied by those forward-looking
statements. These risks and uncertainties are detailed from time to time,
including, without limitation, under the heading "Risk Factors", in reports
filed by Adex with the Alberta, British Columbia and Ontario Securities
Commissions which are available at www.sedar.com and to which readers of this
press release are referred for additional information concerning Adex, its
prospects and the risks and uncertainties relating to Adex and its prospects.
New risk factors may arise from time to time and it is not possible for
management to predict all of those risk factors or the extent to which any
factor or combination of factors may cause actual results, performance and
achievements of Adex to be materially different from those contained in
forward-looking statements. Although the forward-looking statements contained in
this press release are based upon what management believes to be reasonable
assumptions, Adex cannot assure investors that actual results will be consistent
with these forward-looking statements. Given these risks and uncertainties,
investors should not place undue reliance on forward-looking statements as a
prediction of actual results.


The forward-looking information contained in this press release is current only
as of the date of the press release. Adex does not undertake or assume any
obligation to release publicly any revisions to these forward-looking statements
to reflect events or circumstances after the date hereof or to reflect the
occurrence of unanticipated events, except as required by law.