CanAlaska Updates Winter Uranium Exploration Program

    VANCOUVER, April 12 /CNW/ - CanAlaska Uranium Ltd. (CVV - TSX.V) (the
"Company" or "CanAlaska") Further to the Company's news release yesterday
concerning its West McArthur project, CanAlaska is pleased to provide further
details of its current uranium exploration activity in the Athabasca Basin.
    Over the past three months, drill crews have been mobilized to five
projects operated by CanAlaska in the Basin area.

    Key Lake and Waterbury Lake

    Activity reports have been made for the Key Lake and Waterbury Lake
projects, optioned to International Arimex Resources Inc. and Northwestern
Mineral Ventures Inc. respectively.

    North East Wollaston

    At the NE Wollaston project area, where uranium bearing rocks of the
Wollaston Domain come to surface, the Company has defined extensive areas of
near-surface uranium mineralization providing multiple drill targets. Drill
sites were prepared on the more significant of these targets in
December-January, but drilling was delayed due to technical and production
problems affecting the drill contractor. The drill contract has now been
terminated and a second contractor has been engaged for 10,000 metres of
drilling to start in June. During the drilling delays, the Company initiated
further geophysical surveys which are still on-going. Management believes that
this project provides significant potential for the discovery of near surface,
structurally-controlled high grade uranium mineralization, in addition to
larger areas of intrusive-related uranium mineralization

    Lake Athabasca

    The Company has made excellent progress on its drilling efforts at the
Lake Athabasca project. This large project covers a section of Lake Athabasca
southwest of the Uranium City mining camp, a major source area of uranium in
basement rocks where former mine production was some 65 million pounds
U(3) (8). The property includes both the lake and islands. Lake water depths
vary from 0 to 97 metres and are shallower than 50 metres throughout a large
part of the project.
    In the past weeks, the Company started drilling along the trend of the
historic Stewart Island uranium showing (see map insert: There has been
minimal exploration for uranium in this area since the 1970's. However, the
high grade uranium showing (up to 5% U(3)O(8)) with its extremely dense
silicification and surrounding quartz-dravite alteration halo shows striking
similarities with the major uranium deposits of the Eastern Athabasca Basin.
Previous drilling was performed without the benefit of present-day knowledge
of Athabasca style unconformity deposits and their associated alteration
halos. CanAlaska's drill programme is testing the downward extension of the
high-level alteration using drilling and modern geophysics, together with
surface mapping and geochemical and SWIR spectrometric analyses. Several zones
of interest have been defined so far and the most promising ones will be
drilled in the weeks to come. The known mineralization is situated wholly
within the Athabasca sandstone formation, near-to and above interpreted
structural breaks in the underlying basement, which represents an extension of
the basement bearing host to the Uranium City deposits.
    The first drill-hole intersected the near-surface dense hematite-silica
alteration zone and followed it at depth, then intersected a second zone of
vuggy quartz and dravite breccia. The Company is pursuing sandstone and
structurally hosted basement mineralization along this trend, but will also
endeavour to drill what appears to be intrusive style targets of the
Gunnar-type as identified by recent detailed airborne VTEM surveys carried out
in 2006.

    West McArthur

    The drill programme at West McArthur is continuing as described in our
April 10th, 2007 press release.
    The Qualified Person for this news release is Peter Dasler, P.Geo.

    About CanAlaska Uranium Ltd. -

    CanAlaska Uranium (CVV -- TSX.V, CVVUF -- OTCBB, DH7 -- Frankfurt) is
undertaking uranium exploration in seventeen 100%-owned and two optioned
uranium projects in Canada's Athabasca Basin. Since September, 2004, the
Company has aggressively acquired one of the largest land positions in the
region, comprising over 2,500,000 acres (10,117 sq. km or 3,906 sq. miles). In
2005/2006, CanAlaska expended over Cdn$15 million exploring its properties in
the Athabasca Basin and has delineated multiple uranium targets. Initial
drilling results from the West McArthur Project (now under an earn-in option
to Mitsubishi Development Pty. Ltd.) revealed uranium mineralization and
significant zones of hydrothermal alteration, indicative of a favorable
environment for uranium deposition. Active drilling and exploration will
continue in the winter of 2007 at West McArthur and at 4 other significant

    On behalf of the Board of Directors

    Peter Dasler, M.Sc., P.Geo.
    President & CEO, CanAlaska Uranium Ltd.

    The TSX Venture has not reviewed and does not accept responsibility for
the adequacy or accuracy of this release: CUSIPNo. 13708P 10 2. This news
release contains certain "Forward-Looking Statements" within the meaning of
Section 21E of the United States Securities Exchange Act of 1934, as amended.
All statements, other than statements of historical fact, included herein are
forward-looking statements that involve various risks and uncertainties. There
can be no assurance that such statements will prove to be accurate, and actual
results and future events could differ materially from those anticipated in
such statements. Important factors that could cause actual results to differ
materially from the Company's expectations are disclosed in the Company's
documents filed from time to time with the British Columbia Securities
Commission and the United States Securities & Exchange Commission.

For further information:

For further information: Emil Fung, Vice President, Corp. Dev., Tel:
(604) 685-1870, Toll Free (N. America): 1-800-667-1870, Email:

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