Callinan Mines Limited
OTC Bulletin Board : CCNMF

Callinan Mines Limited

April 08, 2005 09:00 ET

Callinan Winter Exploration Update

Callinan Winter Exploration Update

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - April 8, 2005) - Callinan Mines
Limited ("the Company") (TSX VENTURE:CAA)(OTCBB:CCNMF) reports:

The Company's exploration program on their Thompson Nickel Belt claims has
been suspended temporarily.

A total of eight drill holes have been completed, four each on the Pine claim
and the Phillips Lake claim. Ground and down hole geophysics were able to
locate sizeable zones of conductivity on both properties. Drill testing of
the down hole EM target on the Pine claim intersected long sections of
sulphide mineralization. The hole designed to test the target on the Phillips
Lake claim did not reach the target depth. Difficult ground conditions and
the onset of "breakup" forced the company to end the hole before the desired
target was intersected. The company is intent on drill testing this
conductor, and plan to drill it from land as part of its summer exploration

The core is currently being split, sampled and shipped to Acme Analytical
Laboratory in Vancouver where it will be analyzed for nickel, copper gold and
sliver as well as platinum group metals. The results will be reported as soon
as they are received.

Previous exploration on the Pine claim included intercepts of as much 2.93%
Ni as well as 0.43% Ni and 0.05 oz/t Au over 18 ft of pyrite and pyrrhotite.
Callinan's diamond drill hole CAS-4 on the Pine property, designed to test a
conductive target defined by down hole geophysics, intercepted more than 215
ft of mineralization including sections of solid pyrrhotite and pyrite with
visible chalcopyrite.

This winter, the nickel belt has seen a flurry of exploration as strong
demand for nickel has continued to push the price of the metal to new highs.
According to their 2004 annual report, Inco ltd. is experiencing a sustained
trend of lower mine production from their Thompson operations resulting in
reliance on purchased nickel intermediates from as far away as Australia to
maintain their smelting concern. They are currently searching for a cost
effective alternative.

The company's Pine and Phillips Lake properties are located approximately 110
and 60 kms from Thompson, respectively, close to a paved road and a railway.

Abnormal climates and waist deep snow fall this year in the north of Manitoba
resulted in a lack of freezing of swampy ground that rendered mobilization to
Callinan's Fox River and Cal properties impossible. The Company remains
optimistic about the potential of the properties. Ground geophysics have
defined strong conductors in potentially favourable hosts, which the company
plans to drill test as soon as conditions permit.

Mike Muzylowski, President & CEO

Standard & Poor's Listed

12 Month Low/High equals $0.37 - $0.75

Apr. 7, 05, 05 equals $0.44

The TSX Venture Exchange has not reviewed and does not accept responsibility
for the adequacy or accuracy of this news release.