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Message: Sheffield Intersects 33.5 Metres of 3.11% Copper

Sheffield Intersects 33.5 Metres of 3.11% Copper

posted on Jun 23, 2008 08:14PM

June 23 2008 - Vancouver, BC - June 23, 2008 - Sheffield Resources Ltd. ( "Sheffield" ) (TSX-V: SLD) and (FRANKFURT: "S2Q") is pleased to report initial assay results from the 2008 diamond drilling program at the Engels Mine Prospect which is located on Sheffield's Moonlight Copper Project claims in Plumas County, California.

DRILL HOLE   COPPER (%)   LENGTH (metres)   FROM (metres)   TO (metres)   
08-E-33 3.11 33.5 (109.9 ft) 22.0 55.5
including 5.84 6.0 (19.7 ft) 22.0 28.0
and 14.5 2.0 (6.6 ft) 36.0 38.0
and 9.58 2.0 (6.6 ft) 44.0 46.0
08-E-34 0.58 40.0 (131.2 ft) Surface 40.0
08-E-35 0.72 34.0 (111.5 ft) Surface 34.0
including 0.9 22.0 (72.2 ft) Surface 22.0
08-E-36 0.87 32.0 (105.0 ft) Surface 32.0

The current drill program is designed as a series of step out drill holes to define the boundaries of high-grade potentially leachable copper mineralization at the Engels Mine prospect. The true widths of the mineralization have not yet been determined.

Dave Jenkins, Sheffield's President recently commented, "Once again, the drill results expand the area of potentially economic high-grade copper mineralization starting at the surface at the Engels Mine prospect. The Engels' mineralization remains open for expansion to the north, west, south and to depth. The near surface geometry and high copper grade indicate that this project has the potential to be fast tracked to feasibility at relatively low cost." Photographs, cross sections and a location map of the project can be found on Sheffield's website www.sheffieldresources.com

Quality Control and Assurance

A rigorous Quality Control and Assurance program (QC/QA) is in place, including systematic inclusion of standard sample materials, blank samples, duplicate samples and inter-laboratory check assaying. Samples are sent in sealed containers to ALS Chemex in Reno, Nevada. ALS Chemex is a recognized ISO 9000 registered laboratory. The control samples and duplicate assay results received for the drilling program demonstrated to Sheffield Resources that the assay results reported herein are reliable.

The exploration program is managed by Robert Wetzel, a California registered professional geologist and qualified person. David M Jenkins, P.Geo., and president of Sheffield Resources is the qualified person for the Moonlight Copper Project who has reviewed and verified the contents of this news release.

About Sheffield Resources Ltd.

Sheffield Resources Ltd. is an exploration and development company focused on the acquisition and systematic development of copper and nickel deposits with potential for large tonnages of ore that are located close to infrastructure in politically stable areas.

Sheffield announced on April 24, 2008 that the Company and Nevoro Inc. ("Nevoro") (NVR-TSX) have entered into an agreement pursuant to which Nevoro will acquire all of the issued and outstanding common shares of Sheffield.

For further information, please contact:

SHEFFIELD RESOURCES LTD.

Mr. David Jenkins, President

Tel: (604) 697-9400

Toll: (866) 697-9401

E-mail: [email protected]

This news release may contain forward-looking statements including but not limited to comments regarding the timing and content of upcoming work programs, geological interpretations, receipt of property titles, potential mineral recovery processes etc. Forward-looking statements address future events and conditions and therefore involve inherent risks and uncertainties. Actual results may differ materially from those currently anticipated in such statements. Sheffield Resources Ltd. relies upon litigation protection for forward-looking statements.

Copyright (c) 2008 Thenewswire.ca - All rights reserved.



Source: TheNewswire.ca (June 23, 2008 - 3:34 PM EDT)

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