05/10/2005- 2004 Microdiamond Recoveries

[Franko10 ™]

Kensington Resources Ltd.: 2004 Microdiamond Recoveries for Kimberlite 140/141
5/10/2005 9:01:07 AM

VANCOUVER, British Columbia, May 10, 2005 (BUSINESS WIRE) -- Kensington Resources Ltd. (the "Company") (TSX VENTURE:KRT) announces that it has received from the operator, De Beers Canada Inc., microdiamonds results for three coreholes targeted on Kimberlite Body 140/141 during the 2004-2005 program at the Fort a la Corne Diamond Project in Saskatchewan. The principal objective of the 2004-2005 program was to target the significantly higher-grade "breccia" zone identified in 2002 for expanded minibulk sampling.

Corehole 04-140-041 was utilized as a pilot hole for a large diameter borehole (LDDH 04-140-045) and all three coreholes contributed to refinement of the 140/141 geological model in addition to providing intervals of slabbed core for supplemental microdiamond testing. A total of 658 microdiamonds were recovered from 496 kg of kimberlite core utilizing caustic dissolution methods at the Saskatchewan Research Council (SRC). Microdiamond recoveries were audited and individual stone sizes calculated by experts at the De Beers Kimberley Microdiamond Laboratory (KMDL) in South Africa. All recoveries reported here include stones with modeled sizes less than 74 microns in size in order to be directly comparable to 2003 results from the SRC that were reported for this zone. A summary of diamond recovery by kimberlite phase is shown in the table below and a full table of results by sieve category will be available on the Company's website at www.kensington-resources.com.

The samples were obtained from three different HQ (2.5 inches or 63.5 mm diameter) drillholes that intersected the "breccia beds" and underlying "speckled beds" located in the southern part of the 140/141 kimberlite body. Similar to 2003 results, the "breccia beds" yielded the better stone abundances, although both kimberlite units yielded a single macrodiamond larger than 0.5 mm. The average microdiamond abundance for all 140/141 samples from 2004 is 13.3 stones per 10 kg while the breccia beds give average microdiamond abundances of 17 stones per 10 kg. While the average 2004 stone abundance for the breccia beds is slightly lower than the 21.6 stones per 10 kg recorded in 2003, the latter were taken from a much broader area (see the Company's news release dated March 22, 2004) and variation in local diamond distribution is thought to account for the lower values seen in these three closely spaced drillholes.

Table One: 140/141 Microdiamond Results by Kimberlite Type and Year Tested

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Kimberlite Type By Sample # of Average Stones larger
Year Tested Mass (kg) Stones Stones/10kg than 0.5 mm
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2003 Breccia Beds 274.9 593 21.6 4
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2004 Breccia Beds 312.0 531 17.0 1
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2003 Speckled Beds 109.7 134 12.2 0
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2004 Speckled Beds 184.0 127 6.9 1
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2004 Total: 595.15 1159 19.5 2
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"We are very pleased with the continued recovery of larger diamonds from the microdiamond sampling, as any recovery of macrodiamonds from very small samples, such as these cores, is considered a positive indication. The results support delineation of the higher grade 'breccia' zone and will provide data for higher confidence grade forecasts conducted by Mineral Resource Management of De Beers in the months to come," states Robert A. McCallum, President and CEO of Kensington Resources Ltd.

Brent C. Jellicoe, P.Geo. is the Qualified Person for the Company and has reviewed the technical information herein. Microdiamond recovery was performed by Saskatchewan Research Council of Saskatoon. All aspects of quality assurance, quality control and sample chain of custody for the Fort a la Corne Joint Venture are managed by De Beers Canada Inc., the project operator.

Kensington Resources Ltd. is an exploration and mine development company currently focused on the high potential Fort a la Corne Diamond Project in Saskatchewan. The management team includes strong technical expertise and is committed to reaching a diamond producer status for the realization of shareholder value. The Fort a la Corne Diamond Project is a joint venture among Kensington Resources Ltd. (42.245%), De Beers Canada Inc. (42.245%), Cameco Corporation (5.51%) and UEM Inc. (carried 10%). After fifteen years of exploration at Fort a la Corne, the joint venture partners have entered into an accelerated results-driven advanced exploration and evaluation phase targeted on reaching a pre-feasibility decision in 2008. The Fort a la Corne Diamond Project includes 63 identified kimberlite bodies within the largest diamondiferous kimberlite cluster in the world.

Robert A. McCallum, President & CEO

FORM 20-F FILE #0-24980

LISTED IN STANDARD & POOR'S

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

Kensington Resources Ltd. (CA:KRT)

SOURCE: Kensington Resources Ltd.

Kensington Resources Ltd.
Robert A. McCallum
President & CEO
1-800-514-7859 or [phone]
Fax: [phone]
[e-mail]
OR
Kensington Resources Ltd.
Mel Gardner
Manager Investor Relations
1-800-710-6083
[e-mail]
www.kensington-resources.com


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