Breaking Tennis News: Statement by Auto-Ref CEO Peter Szirmak

over 50 metres. Complete results are tabulated
hereunder.05
1 1.03 1 .33 6.5 4.18 1.19
3 2.

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It deeply saddened me to inform the USTA last week of our decision.1 g/t Au.7 metres.83 1.05 2 .40 2.5 1.5 3.5 1.5 2.86 1.86
SPD-17 9800 9750 -60 85 1.5 2.

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We are formulating plans to
resume testing with the tennis federations and implement our system at the
first logical tournament opportunity. Visible
gold was observed within this mineralized zone., hole SPD-5
which returned 11.89 11.10 1.33 2.

About Guyana Goldfields

The Aurora exploration and drilling program is being carried out
under the direction of Mr.

Guyana Goldfields Inc.com, and through the Company's
offices by contacting:

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

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Guyana Goldfields Inc.: High Grade Gold Intersected at Aurora

Highlights of current drilling results include
hole SPD-15 which returned 42 metres of 4.5 1.23 5.40
SPD-11 9950 9785 -60 85 4.50
4.17 2.03 1.73
42 4.33
(1) hole abandoned prior to reaching targeted depth
Note: All holes drilled at an azimuth of 56 degrees

Drilling continues on the property with two rigs currently
operating.sedar.

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The testing is the
final part of a nine-month evaluation process, in the USTA's search to
implement an electronic line calling technology to aid officiating at the 2005
US Open. Hole RKD-34 returned 11. over a
core length of 105.7 metres. Four holes (SPD-1 to
SPD-4) have previously been released from this area (Press release
January 26, 2005) .96 g/t Au.

Hole Location Dip Total Length Grade
North East Depth (g/t Au.) (m.83
26.10
6 8.00
1. The Guiana Shield is
in the northern part of the Amazon Craton and covers parts of Guyana,
Venezuela, Suriname, French Guyana and northern Brazil.

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Auto-Ref 's decision
has nothing to do with the technology which has continually proven to be
excellent , with official testing results indicating that Auto-Ref is accurate
within 4mm."

1 g/t Au.50 1.11
13.43 3.03
1.35 4. The Company maintains an
archive of half core samples and a photographic record of all cores
for future reference.

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Auto-Ref is confident that, when it is in a position to complete our final
testing, we will become the 'technology of choice' as has been speculated by
the world's authoritative tennis publications.

Auto-Ref is the world 's most accurate technology, and best solution for
the US Open.7 metres (uncut).)
(deg.) Cut Uncut
SPD-5 10055 9820 -45 55 7.94
(1)SPD -6 10055 9818 -65 40 10.21 2.77 5.77
12 3.5 1.18
4. In addition , auger drilling of prospective areas outlined
by stream sediment sampling and geophysics has delineated at least
six anomalous areas requiring additional work. Calhoun has reviewed
the exploration results contained in this news release. Loring Laboratories is
a Canadian owned and operated laboratory.

is a Canadian based mineral exploration
company primarily focused on the exploration and development of gold
deposits in the Guiana Shield of South America.

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The Auto-Ref system also features a true chair umpire interface
for real time line-calling assistance and provides a more logical evolution
into line calling assistance than simple animated video replay.5 4.40
SPD-8 10000 9800 -45 72 9 2.5 1.5 1.5 5.5 7.00 2. Mr.

Additional Information

Information is available on the Company's website at
www.

independentist guiana

Auto-Ref was physically unable to move and set up its equipment in New
York in time for this week's testing process due to an unforeseen business
dispute. This dispute is in no way related to the USTA. are cut to 25 g/t Au.

Aleck Hill

Eight hundred metres west of the Rory's Knoll area, in an area of
significant historical gold workings, drilling has delineated
significant near surface gold mineralization.) (m.23
1 6.33
SPD-9 10000 9800 -65 67 3 1.50
50 6.43
SPD -12 9900 9780 -45 45 1.98 9.32 8.19 3.17
SPD-14 9850 9775 -45 71.

The Company currently has approximately (CDN) $11 million in cash
and no debt.

Guyana Goldfields Inc.

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(reference: article in today's Globe + Mail)

TORONTO , May 12 - "Auto-Ref today announces it has
officially advised the USTA that it cannot participate in the USTA's final
round of testing being conducted in New York this week. Auto-Ref holds
the patent rights to the method of line calling involving cameras and
computers, recreating a tennis ball's flight in three dimensions and comparing
its bounce point to the lines.
(TSX:GUY) is pleased to report additional encouraging results from the
Aurora Property, Guyana, South America. Included within this section is
a very high grade section of 68. the mineralized section averages
3. over 105. Drilling in this area will continue
when a larger rig arrives on the property, which is expected to be
operational within 5 weeks. over 26.5 metres and hole SPD-9 which
assayed 9.48 g/t Au.5 2.48
SPD-10 9950 9785 -45 79.52 11.5 1.17 1. Core is
split, with half sent to Loring Laboratories in Georgetown, Guyana
for preparation and analysis using fire assay.

(TSX:GUY)

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News Editors

TORONTO----Guyana Goldfields Inc.

Rory's Knoll

Drilling at the Rory's Knoll area continues to expand the
mineralized zone, as well as provide additional evidence of an
increasing grade at depth.53 g/t Au. over 15. When values in excess
of 25 g/t Au.9 g/t Au.21
30.5 5.40 1.95
13.79
SPD-13 9900 9780 -60 62.5 10.17
SPD-15 9850 9775 -60 82 1.5 1.73 1. Sample blanks, duplicates and recognized
standards were inserted into the sample stream at regular intervals.

atlasgeo independentist

This patent was issued in November of last year
for the United States, with similar applications in good standing in Europe
and Australia. The Company holds a 100%
interest in the 164,000 acre property.03
(1)SPD-7 10055 9818 -45 44 10 2.87 9.11 1.5 4.5 1.96
SPD -16 9800 9750 -45 84 18 1. Rory Calhoun, a qualified person within
the meaning of National Instrument 43-101.

The Company holds advanced exploration projects in various stages
of development and has been operating in Guyana continuously since
1996.

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