Sheffield Resources Ltd.
TSX VENTURE : SLD

Sheffield Resources Ltd.

October 11, 2006 09:30 ET

Sheffield Intersects 97.5 Metres of 1.08% Copper at Moonlight Deposit

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - Oct. 11, 2006) - Sheffield Resources Ltd. ("Sheffield") (TSX VENTURE:SLD) continues its core drilling program designed to confirm the structural and ore control parameters at its Moonlight Project in Plumas County, California, and herein reports copper analyses of its ninth "HQ" diamond drill hole. Hole 06MN-9 was drilled on an azimuth of 210 degrees at an inclination of -44 degrees to test for a high grade zone interpreted from historical data obtained during the Placer Dome drill programs completed in the 1960's. Hole 06MN-9 intersected a total of 97.5 metres of copper mineralization grading 1.08% copper and ended at 103.3 metres in low-grade copper mineralization. Silver assay data are not complete at this time and will be reported separately when all silver data are in hand.



DRILL RESULTS SUMMARY TABLE
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LENGTH
DRILL LENGTH FROM TO metres Cu Ag
HOLE metres metres metres (ft) % g/t
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06MN-9 103.3m 0.5m 98m 97.5m 1.08 To come
(339 ft.) (1.6 ft.) (322 ft.) (320 ft.)
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including all intervals reported below
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0.5m 26m 25.5m 0.36 To come
(1.6 ft.) (85 ft.) (84 ft.)
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26m 38m 12m 4.01 43.9
(85 ft.) (125 ft.) (30 ft.)
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50m 66m 16m 2.00 To come
(164 ft.) (217 ft.) (53 ft.)
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74m 98m 24m 0.64 To come
(243 ft.) (322 ft.) (79 ft.)
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Hole 06MN-9 was drilled from a collar located approximately 60 metres (200 ft.) northeast of hole ML-245 and was drilled to pass close to the projected drill trace of hole ML-245.



COMPARATIVE DRILL RESULTS FROM HISTORICAL DRILLING IN 1960's
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LENGTH
DRILL DEPTH FROM TO metres Cu
HOLE metres metres metres (ft) %
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ML-245 122m 10m 64m 61m 1.4
(400 ft.) (3 ft.) (210 ft.) (200 ft.)
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including 6m 21m 15m 3.0
(20 ft.) (70 ft.) (50 ft.)
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64m 113m 49m 0.107
(210 ft.) (370 ft.) (160 ft.)
--------------------------------------------------------------


Sheffield holds a 100% interest in the Moonlight deposit subject to a 2% Net Smelter Return royalty (purchasable for US$500,000) on metals produced - by means of an option agreement on the 8 Diane Claims and by means of staking an additional 260 claims in the name of its operating subsidiary, American Sheffield Corp. Sheffield also holds the right to a 100% interest in the contiguous California-Engels Mining Company properties which were also extensively drilled by Placer.

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 results are considered reliable. Copper is determined by atomic absorption spectrometry after a four acid digestion of a 0.4-gram aliquot. A second copper determination plus analyses of silver and other metals are made by ICP-AES after a three acid digestion of a 0.4-gram aliquot.

The exploration program is managed by Robert Wetzel, a California registered professional geologist and qualified person. The technical information in this news release has been prepared in accordance with Canadian regulatory requirements set out in National Instrument 43-101. David M Jenkins, P.Geo., and president of Sheffield Resources is designated the qualified person for the Moonlight Project.

About Sheffield Resources Ltd.

Sheffield Resources Ltd. is an exploration and development company focused on the acquisition and systematic exploration of advanced-stage copper projects with the goal of advancing them to development.

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 recover 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.

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