Rimfire and Northgate Report Drilling at Boulevard Property Yields Gold Mineralization

    VANCOUVER, Jan. 22 /CNW/ - (All figures in Canadian dollars) Rimfire
Minerals Corporation, TSX-V: RFM, is pleased to report results from diamond
drilling at the Boulevard Property, Yukon Territory. Drilling, funded by
Northgate Minerals Corporation, TSX: NGX, intersected gold mineralization in
five of seven holes (totalling 524.9 metres) to follow up a trenching
discovery in the summer of 2008 (see news release dated September 23, 2008).
Drilling tested the mineralization in the discovery trench and targets along
the apparent strike of this mineralization, within a large multi-element soil
geochemical anomaly.
    Prior to this drill program, gold mineralization was discovered at the
Boulevard in the first of three trenches to investigate portions of a 2.0
kilometre (km) by 0.4 km arsenic-antimony-gold soil geochemical anomaly in an
area of sparse outcrop. The discovery trench, TRV08-01, returned 7.04 grams
per tonne (g/t) gold over 6.0 metres. Three drill holes tested this
mineralization at depth, returning 1.0 g/t gold over 1.8 metres in BV08-01,
approximately 45 metres down dip from the trench, and 0.9 g/t gold over 18
metres including 1.9 g/t gold over 3.5 metres in BV08-03 approximately 5
metres down dip from the trench.
    Two holes tested beneath a second mineralized trench (TRV08-02, 6.43 g/t
gold over 2.0 metres) located 100 metres southeast along trend from TRV08-01,
returned 0.8 g/t gold over 4.2 metres and 0.5 g/t gold over 5.5 metres at
approximately 20 and 30 metres down dip respectively. Two additional holes
targeted anomalous arsenic-gold-antimony geochemistry located 220 metres and
1110 metres along trend from the discovery area. BV08-07 returned 1.0 g/t gold
over 3.3 metres in a subtle style of mineralization not observed in previous
drill holes or trenches.
    Gold mineralization is hosted in strongly sericite +/- clay altered
schists with disseminated pyrite, arsenopyrite and stibnite. Sulphide
mineralization is finely disseminated in the wall rock of quartz vein arrays
or occurs as massive sulphide veins within the arrays. Mineralization-hosting
quartz vein arrays follow regional northwesterly structures along major
contacts between lithological packages.
    "Drilling and trenching in 2008 focused on a relatively small portion of
a large multi-element geochemical anomaly, resulting in the discovery of
buried gold mineralization," stated Mark Baknes VP exploration, "Our focus
will be to investigate the remainder of this anomaly and determine the best
portions for future trenching."
    The Boulevard Property is held jointly by Rimfire and Northgate without
underlying royalties, with each company having funded the initial $330,000 in
exploration that led to staking of the property. To date, Northgate has funded
approximately $1.39 million of the required $1.5 million in exploration
expenditures to earn an additional 10% interest (for a total of 60%) in the
    This news release has been reviewed by Mark Baknes, M.Sc., P.Geo., VP
Exploration of Rimfire Minerals, a Qualified Person for the purpose of
National Instrument 43-101.

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    Rimfire Minerals Corporation is an aggressive, well-financed mineral
exploration company with a portfolio of highly prospective gold and copper
properties in western North America and Australia. Rimfire currently has in
excess of two years of operating capital, and finances approximately 80% of
its exploration through option and joint venture agreements. Current and
former partners include AngloGold Ashanti Limited, Barrick Gold Corporation,
Newmont Mining Company, Inmet Mining Corporation, Northgate Minerals
Corporation, Fronteer Development Group Inc., Rubicon Minerals Corporation,
American Creek Resources Ltd., Island Arc Exploration Corporation, Jaguar
Minerals Limited and BWG.

    Northgate Minerals Corporation is a mid-tier gold and copper producer
with mining operations, development projects and exploration properties in
Canada and Australia. The company is forecasting record production of 392,000
ounces of unhedged gold production in 2009 and is targeting growth through
further acquisition opportunities in stable mining jurisdictions around the
world. Northgate is listed on the Toronto Stock Exchange under the symbol NGX
and on the NYSE Alternext US (formerly AMEX) under the symbol NXG.

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    Forward-Looking Statements:
    This news release contains certain "forward-looking statements" and
"forward-looking information" under applicable Canadian and U.S. securities
laws. Forward-looking statements generally can be identified by the use of
forward-looking terminology such as "may," "will," "expect," "intend,"
"estimate," "anticipate," "believe," or "continue" or the negative thereof or
variations thereon or similar terminology. Forward-looking statements are
necessarily based on a number of estimates and assumptions that are inherently
subject to significant business, economic and competitive uncertainties and
contingencies. Certain of the statements made herein, including any
information as to the future activities of and developments related to the
business activities of Northgate Minerals Corporation (Northgate) and its
subsidiaries, the market position, and future financial or operating
performance of Northgate, are forward-looking and subject to important risk
factors and uncertainties, many of which are beyond the corporations' ability
to control or predict. Known and unknown factors could cause actual results to
differ materially from those projected in the forward-looking statements. Such
factors include, among others: gold price volatility; impact of any hedging
activities, including margin limits and margin calls; discrepancies between
actual and estimated production, between actual and estimated reserves and
resources and between actual and estimated metallurgical recoveries; costs of
production, capital expenditures, costs and timing of construction and the
development of new deposits, success of exploration activities and permitting
time lines; changes in national and local government legislation, taxation,
controls, regulations and political or economic developments in any of the
countries in which either corporation does or may carry out business in the
future; risks of sovereign investment; the speculative nature of gold
exploration, development and mining, including the risks of obtaining
necessary licenses and permits; dilution; competition; loss of key employees;
additional funding requirements; and defective title to mineral claims or
property. In addition, there are risks and hazards associated with the
business of gold exploration, development and mining, including environmental
hazards, industrial accidents, unusual or unexpected formations, pressures,
cave-ins, flooding and gold bullion losses (and the risk of inadequate
insurance or inability to obtain insurance, to cover these risks), as well as
the factors described or referred to in the section entitled "Risk Factors" in
Northgate's Annual Information Form for the year ended December 31, 2006 or
under the heading "Risks and Uncertainties" in Northgate's 2006 annual report,
both of which are available on SEDAR at www.sedar.com, and which should be
reviewed in conjunction with this document. Accordingly, readers should not
place undue reliance on forward-looking statements. Neither corporation
undertakes any obligation to update publicly or release any revisions to
forward-looking statements to reflect events or circumstances after the date
of this document or to reflect the occurrence of unanticipated events, except
in each case as required by law.

For further information:

For further information: Rimfire Minerals Corporation, Jason Weber,
P.Geo., President & CEO, T: (604) 669-6660, E-mail: info@rimfire.ca, Website:
www.rimfireminerals.com; Northgate Minerals Corporation, Ms. Keren R. Yun,
Director, Investor Relations, Tel: (416) 216-2781, Email:
ngx@northgateminerals.com, Website: www.northgateminerals.com

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