Rimfire Completes Drilling at The Walmer Property, Australia

Rimfire Minerals Corporation, (TSX VENTURE:RFM), announces that drilling has
been completed at the Trounce gold prospect on the Walmer Property, Australia.
The Walmer Property is located 40 km south of Dubbo, in New South Wales.
Drilling consisted of four diamond drill holes for a total depth of 286 metres.
Assays are pending.


Drilling targeted the Trounce gold prospect, a subtle, north-south striking
topographic high, coincident with anomalous gold soil geochemistry and a 40
metre-wide by 500 metre long chargeability and resistivity high. This
topographic and geophysical signature is open to the north and south and is
coincident with the trace of a regional-scale thrust fault. Two of seven grab
samples from the showing returned gold values of 2.4 and 3.6 g/t gold from
silicified sediments with quartz - pyrite veining and stockwork and the
remaining five assayed from 0.21 to 0.61 g/t gold. Float samples of similar
material sampled directly adjacent to these outcrops returned highlight values
of 3.5, 5.9 and 7.4 g/t gold. The Trounce showing is marked by historical
workings, but has had no modern exploration. Surface rock and soil samples with
anomalous gold values extend the potential strike length of the system to at
least 750 metres.


The Walmer Property was one of nine properties acquired in 2007 based on targets
identified in a neural network study conducted within a 120,000 square kilometre
area of interest in New South Wales. Rimfire maintains two other properties in
New South Wales:


- The Barmedman property located 50 kilometres south of Barrick Gold Corp's 5 M
oz Cowal epithermal gold deposit. A 2008 Induced Polarization (IP) survey
identified a buried chargeability high anomaly 0.5 by 1.4 kilometres in size.
While the source of the IP anomaly is not exposed at Barmedman, copper and gold
mineralization has been identified over large widths in recent drilling on
adjacent properties operated by other junior explorers such as Goldminco.


- The Springfield property lies 12 kilometres south-southeast of the historic
mining town of Gulgong and 80 kilometres northeast of the Cadia Valley
copper-gold porphyry mining complex. A regional scale Induced Polarization (IP)
survey has been completed and results are currently being analyzed.


This news release has been reviewed by Mark Baknes, M.Sc., P.Geo., VP
Exploration for Rimfire Minerals Corporation, a Qualified Person for the purpose
of National Instrument 43-101.


Director Resigns

David Caulfield, Chairman of the Board of Directors regretfully accepts the
resignation of Mr. Ian Talbot from the company's Board of Directors. Mr. Talbot
served as a director since January, 2007 and prior to that was the Company's
Corporate Secretary. Mr. Talbot's resignation comes as a result of recently
accepting the position of Chief Operating Officer with the Strategic Group of
companies. Two companies within this group employ a similar business strategy to
Rimfire and operate in the same jurisdictions. All parties felt it appropriate
for Ian to resign his seat on the Board to avoid potential conflicts of
interest. Rimfire would like to thank Ian for his contribution and wishes him
well in his new endeavour.


Treasury

Rimfire Minerals Corporation currently has in excess of C$6 million in working
capital. Historically, 80% of Rimfire's exploration exposure is funded by
partners. Given the quality of our exploration partners and assuming this
continues, Rimfire expects similar funding requirements going forward. This
scenario would give Rimfire approximately two to three years of operating
capital based on current exploration plans.


About Rimfire

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. 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.


On behalf of Rimfire Minerals Corporation

Jason Weber, P.Geo., President & CEO

CAUTIONARY STATEMENT: No stock exchange, securities commission or other
regulatory authority has approved or disapproved the information contained
herein. This News Release includes certain "forward-looking statements". Other
than statements of historical fact, all statements included in this release,
including, without limitation, statements regarding future plans and objectives
of Rimfire Minerals Corporation, 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 Rimfire's expectations are
the risks detailed herein and from time to time in the filings made by Rimfire
Minerals Corporation with securities regulators. Those filings can be found on
the Internet at http://www.sedar.com and
http://www.sec.gov/edgar/searchedgar/companysearch.html.