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Re: News Archive - Wednesday, March 19, 2008
Jake Project Drilling Results
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Press Release 08-06

Vancouver, BC - March 19, 2008: Jason Weber, President and CEO of
Rimfire Minerals Corporation reports final results from drilling
conducted at the Jake Property, 13 km west of Clearwater, British
Columbia. The 2007 program successfully tested the Jake Showing at
depth, including an intersection of 11.34 g/t gold over a true width of
1.25 metres. The winter 2007 drilling program confirms continuity of
vein structures beyond the original Jake showing and beneath the
extensive glacial till blanket. It also confirms that Induced
Polarization (IP) geophysical techniques are effective in targeting
these buried structures.

A total of 1083 metres of drilling was completed in seven holes. An
eighth hole was lost in overburden. Island Arc Exploration Corp.
(Island Arc) funded the program under the terms of an option agreement
signed in May of 2007, allowing Island Arc to earn a 51% interest in
the project by funding $1.75 million in exploration over three years. A
plan map with drill hole locations can be found at
http://www.rimfire.bc.ca/s/Jake.asp.

The drilling program tested three targets identified by a geophysical
survey and mechanized trenching in 2007. An IP survey conducted in June
revealed three chargeability high anomalies in the immediate vicinity
of the Jake Showing. The first area is coincident with the Jake
discovery outcrop, reflecting mineralization sampled in trenches in
2006 and again in 2007. Results of 2007 trenching included 7.70 g/t
gold over 2.80 metres from a channel sample across a series of
quartz-pyrrhotite-pyrite-chalcopyrite-bismuthinite veins, including
19.3 g/t gold over 0.60 metres. Three drill holes targeted the Jake
Showing, intersecting the Jake host structure at approximate depths of
15, 25 and 75 metres below surface. The highest gold values were
observed where quartz veining is associated with net-textured to
massive pyrrhotite-pyrite-chalcopyrite-bismuthinite. Hole J-DDH07-04
intersected a 0.50 metre section of net-textured sulphides in quartz
veins averaging 27.80 g/t gold and strongly anomalous in bismuth and
copper. This intersection averaged 11.34 g/t gold over the entire 1.25
metre true width of the structure.

Drilling at a second target, the Jake Offset, located 300 metres to the
north, intersected a 0.5 metre zone of strong shearing and chlorite
alteration averaging 4.64 g/t gold, including a 20 centimetre sample of
net-textured sulphides and quartz vein fragments assaying 8.85 g/t
gold. Gold mineralization was encountered in the northern-most of three
holes (over 190 metres of trend) drilled to test a 300 metre-long
chargeability anomaly that remains open to the northwest.

Christopher J. Wild, P.Eng, Vice-President, Exploration for Island Arc
commented, "Island Arc views these results as very positive. The
intersection of gold mineralization in drilling at the Jake Showing and
300 metres north at the Jake Offset indicates that gold mineralization
occurs in multiple structures. Once the field season begins, we plan
to use IP geophysics as our primary tool to delineate extensions to
these structures and identify new targets."

Jake Project - 2007 Diamond Drilling Results


This news release has been reviewed by Mark Baknes, M.Sc., P.Geo., a
Qualified Person for the purpose of National Instrument 43-101. Assays
were completed by ALS Chemex Labs of North Vancouver, BC.


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, Rubicon
Minerals Corporation, Cangold Limited, American Creek Resources Ltd.,
Island Arc Exploration Corporation and BWG.


On behalf of Rimfire Minerals Corporation

"Jason Weber"

Jason Weber, P.Geo., President & CEO

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

View News Release in PDF Format:

Associated File:
http://www.rimfire.bc.ca/i/pdf/2008-03-19_NR.pdf
29 KB in size, approx. 6 seconds to download at 56.6Kbps

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Copyright (c) 2008 RIMFIRE MINERALS CORPORATION (RFM) All rights
reserved. For more information visit our website at
http://www.rimfire.bc.ca/ or send mailto:info@rimfire.bc.ca
Message sent on Wed Mar 19, 2008 at 9:18:24 PM Pacific Time
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