Aurizon Mines Ltd.

Aurizon Mines Ltd.

March 31, 2005 09:00 ET

New High Grade Drilling Results Above Level 700 Metres at Aurizon's Casa Berardi Project




MARCH 31, 2005 - 09:00 ET

New High Grade Drilling Results Above Level 700 Metres
at Aurizon's Casa Berardi Project

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - March 31, 2005) - Aurizon
Mines Ltd. (TSX:ARZ)(AMEX:AZK) is pleased to report further results from
its ongoing drill program surrounding the West Mine area of its Casa
Berardi Project, located in north-western Quebec, where three
underground drill rigs are active.

Drilling along the upper extension of Zone 113 has extended the Zone
up-dip above the limit of the recently published mineral reserves. Some
of the better grades include 28.4 g/t over 11.30 metres and 10.2 g/t
over 10.30 metres. Infill drill results from Zone 109, where inferred
resources have previously been outlined from surface drilling, indicate
that there is a small tonnage high-grade deposit near current
infrastructure. Best grades are 193.1 g/t over 4.0 metres and 91.7 g/t
over 3.1 metres. Infill drilling on 25 metre centres of the upper levels
of Zone 109 and Zone 113 is now complete. Resources from the current
drill program, as well as the high-grade resources outlined below 700
metres in Zone 113, will be incorporated into an Updated Feasibility
Study due later in 2005. Drilling of Zone 113 below 700 metres is
ongoing from a cross-cut off the 550 metre track drift. The first drill
results from the down dip extension of Zone 113 are expected during the
second quarter. The 550 metre track drift is currently being extended
east to provide a drill station for infill drilling of Zones 118 to 120.
Aurizon plans to continue to expand known mineral resources and reserves
at Casa Berardi during the pre-production construction period.

Results from all the additional holes drilled are reported below:

Gold Length Gold Length
grams/ (metres Ounces grams/ (metres Ounces
tonne along per tonne along per
Hole (assays the short Hole (assays the short
ID uncut) hole) ton ID uncut) hole) ton
--------------------------------- ---------------------------------
Zone 113 up-dip extension Zone 109
U419 28.4 11.3 0.83 U425 193.1 4.0 5.63
U395 10.2 10.3 0.30 U428 91.7 3.1 2.67
U393 2.7 5.0 0.08 U426 5.5 3.7 0.16
U417A 2.5 21.8 0.07 U422 5.2 12.5 0.15
U441 6.7 2.2 0.20 U427 3.0 7.6 0.09
U418 4.0 2.6 0.12 U424 5.9 2.0 0.17
Holes 392, 397, 399, 420 Holes 421, 423
No significant results No significant results

"We continue to be successful in defining areas close to infrastructure,
that should positively impact the current mine plan," said David Hall,
Aurizon's Chief Executive Officer.

Up-dip extension of Zone 113

The current mining plan proposed in the Feasibility Study incorporates
both the upper portion of Zone 113 and the upper portion of Zone 111. A
close-spaced drilling program, initiated at 25 metres centres, has
confirmed the up-dip extension of Zone 113 up to Zone 111. Current
drilling indicates that a narrow high grade ore shoot can be identified
between Zone 113 and Zone 111.

An Updated Feasibility Study to transfer high grade resources identified
below the proposed shaft bottom, into reserves is currently in progress.

Zone 109

Zone 109 is a high grade, small, flat lying quartz vein that was
originally discovered by previous surface exploration drilling. Previous
results returned grades such as 15.4 grams of gold per tonne over 7.8

As the Zone is located close to ramp access, an infill drill program, at
25 metres centres, was initiated to upgrade the quality of the inferred
resources to indicated resources and, eventually, include them in the
mine plan of the Updated Feasibility Study, due later this year.

Quality Control

Core assays are performed on split or core sawed in half, with standard
fire assay procedures and gravimetric finition. However, some of the
infill drill core assays were performed on whole core. Certified
reference material is inserted in the sample sequence for quality
control. Assay checking on the pulp and reject samples are carried out
systematically. Primary assaying is performed by SGS Geochemical
Laboratories of Rouyn-Noranda and check assays are carried out by
Chimitec of Val D'Or.

Drill hole planning, implementation and the quality control program is
supervised by Jeannot Boutin, P.Eng., Principal Engineer Mine Geology,
who is an appropriately qualified person as defined by National
Instrument 43-101.

Additional Information

Two sketches indicating the area covered by the current underground
exploration drilling program described herein are attached to this news
release. If you are unable to view this information, please download
this news release from Aurizon's website at or contact
the Company at the numbers listed below. All other information
previously released on the Casa Berardi project is also available on the
Aurizon website.

Aurizon is a Canadian-based gold producer with operations and
exploration activities in the Abitibi region of north-western Quebec,
one of the world's most prolific gold and base metal regions. Aurizon
has recently completed a positive Feasibility Study on its' one hundred
percent (100%) owned Casa Berardi property. Pre-production construction
is currently underway. Operations at the Project are anticipated to
commence in late 2006. Casa Berardi is accessible by road, has mining
permits in place and is on the Hydro Quebec power grid. Aurizon also
owns 50% of the Sleeping Giant Mine. Aurizon shares trade on the Toronto
Stock Exchange under the symbol "ARZ" and on the American Stock Exchange
under the symbol "AZK".

This News Release contains "forward-looking statements", including, but
not limited to, statements regarding the Company's expectations as to
the market price of gold, strategic plans, future commercial production,
production targets and timetables, mine operating costs, capital
expenditures, work programs, exploration budgets and mineral reserve and
resource estimates. Forward-looking statements express, as at the date
of this report, the Company's plans, estimates, forecasts, projections,
expectations, or beliefs as to future events or results. Forward-looking
statements involve a number of risks and uncertainties, and there can be
no assurance that such statements will prove to be accurate. Therefore,
actual results and future events could differ materially from those
anticipated in such statements. Factors that could cause results or
events to differ materially from current expectations expressed or
implied by the forward-looking statements, include, but are not limited
to, factors associated with fluctuations in the market price of precious
metals, mining industry risks and hazards, environmental risks and
hazards, uncertainty as to calculation of mineral reserves and
resources, requirement of additional financing, risks of delays in
construction and other risks more fully described in Aurizon's Annual
Report on Form 20-F filed as an alternative form of AIF with the
Securities Commissions of the provinces of British Columbia, Ontario and
Quebec, with the United States Securities and Exchange Commission, and
with the Toronto Stock Exchange.

Cautionary Note to US Investors

The United States Securities and Exchange Commission permits mining
companies, in their filings with the SEC to disclose only those mineral
deposits that a company can economically and legally extract or produce.
We use certain terms in this news release such as "mineral resources"
and "undiluted inferred resources" that the SEC guidelines strictly
prohibit us from including in our Form 20-F, File No. 0-22672 available
from us at Suite 900, 510 Burrard Street, Vancouver, B.C. Canada V6C
3A8. You can also obtain this form from the SEC by calling in
1-800-SEC-0330 or visit Aurizon's page on SEDAR, where all of the
Company's public documents are filed, including the Form 20-F (reference
Annual Information Form).

Cautionary Note to U.S. Investors concerning estimates of Measured and
Indicated Resources - This news release uses the terms "measured" and
"indicated" resources. We advise U.S. Investors that while those terms
are recognized and required by Canadian regulations, the U.S. Securities
and Exchange Commission does not recognize them. U.S. investors are
cautioned not to assume that any part or all of mineral deposits in
these categories will ever be converted into reserves.

Cautionary Note to U.S. Investors concerning estimates of Inferred
Resources - This news release uses the term "inferred" resources. We
advise U.S. investors that while this term is recognized and required by
Canadian regulations, the U.S. Securities and Exchange Commission does
not recognize it. "Inferred resources" have a great amount of
uncertainty as to their existence, and great uncertainty as to their
economic and legal feasibility. It cannot be assumed that all or any
part of an Inferred Mineral Resource will ever be upgraded to a higher
category. Under Canadian rules, estimates of Inferred Mineral Resources
may not form the basis of feasibility or prefeasibility studies, except
in rare cases. U.S. investors are cautioned not to assume that part or
all of an inferred resource exists, or is economically or legally

U.S. Registration: (File #0-22672) Form 20-F


Contact Information

    Aurizon Mines Ltd.
    David P. Hall
    (604) 687-6600 or Toll Free 1-888-411-GOLD
    Aurizon Mines Ltd.
    Patrick Soares
    Manager, Investor Relations
    (604) 687-6600 or Toll Free 1-888-411-GOLD
    (604) 687-3932 (FAX)