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Impact Silver Discovers High-Grade Gold Veins On Mamatla
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IMPACT Silver Corp. ("IMPACT") is pleased to announce results of the
first assays received from preliminary reconnaissance work conducted on
a small section in the northeast portion of its newly acquired 200 km2
Mamatla Project (see news release dated February 28, 2007). Mamatla is
located immediately southwest of and adjacent to IMPACT's Royal Mines
of Zacualpan silver project and production facilities in central
Mexico. The reconnaissance program successfully traced epithermal
silver and copper-gold veins from the southwest sector of the Royal
Mines of Zacualpan project (see news release dated January 18, 2007)
onto the northeastern part of the Mamatla district. In addition,
several new epithermal vein prospects were found during the program.
As is customary, the prospect names listed below are named after local
landmarks and historical figures.

HUATECOSCO PROSPECT

IMPACT crews found two old mine workings at the historic Huatecosco
Prospect located about 10 km southwest of the Royal Mines of Zacualpan
processing plant. Grab samples from the mine dump of the lower
workings returned assays of 409 g/t silver, 5.41 g/t gold, 0.9% zinc
and 0.5% lead. Crews were able to enter the upper inclined shaft which
leads to a small underground working on the vein in oxidized material.
Sampling of exposed oxidized material in the upper workings vein
returned 1.88 g/t gold and 40 g/t silver over 8.7m. The vein was also
accessible in another area where samples returned highly variable assay
results with grades up to 189 g/t gold over 1.5 m. IMPACT geologists
believe that this is a wide vein containing variable, locally very high
gold grades in the near surface oxidized zone and more consistent
silver and gold rich grades at depth. IMPACT plans to reopen the lower
workings and sample the vein at a lower level in preparation for future
drilling.

SARA MAMATLA PROSPECT

The Sara Mamatla Prospect is located 2.5 km northeast of Huatecosco. A
grab sample of vein material from the mine dump assayed 380 g/t silver,
1.14 g/t gold, 1.0% zinc and 1.9% lead. Plans are to reopen the old
mine for crews to sample the vein in-situ.

SAN JOAQUIN PROSPECT

The San Joaquin Prospect is located 2.5 km west of Huatecosco. A grab
sample of vein material from the mine dump assayed 295 g/t silver and
1.5% zinc. Plans are to map and sample this area and if possible
establish access to old mine workings.

ZAPOTE PROSPECT

A series of altered andesite dikes are exposed along a road 4 km west
of Huatecosco. IMPACT crews sampled two of these dikes, which returned
assays of 14.90 g/t gold across 0.5 m and 7.29 g/t gold across 0.6 m.
Nearby there is a 20 m wide vein that returned low grade values on the
roadcut, but may have potential for mineralization at depth. IMPACT
plans to carry out a program of mapping, trenching and sampling in this
area to better understand the mineralizing system and its potential.

IMPACT management is pleased that the initial reconnaissance of the
northeastern part of the new Mamatla concession turned up so many
prospects with significant assay results. All of the prospects
described in this news release are new and in addition to those
previously known and discussed in prior news releases.

George Gorzynski, P.Eng., a Qualified Person under the meaning of
Canadian National Instrument 43-101 and Vice President, Exploration of
IMPACT Silver Corp., is responsible for the technical content of this
news release. Chip and channel samples were collected from cleaned
rock faces in old mine workings and from bedrock outcrops over a
continuous representative interval using a moil and hammer, bagged,
sealed and then securely stored at the IMPACT base camp until shipment.
A total of 5% assay standards and blanks were inserted into every
sample shipment as a quality control measure. All samples were shipped
to the ALS Chemex preparation laboratory in Guadalajara (Mexico) where
they were fine crushed (70% passing a 2 mm screen), pulverized (85%
passing a 75 micron screen) and a pulp split separated for assay by a
riffle splitter. These pulps were shipped to the ALS Chemex laboratory
in North Vancouver, Canada, where a 30-gram split of each was assayed
for gold and silver by standard fire assay and a 10-gram split was
analysed for an additional 30 elements by ICP spectrometry. Samples
high in zinc or lead were then wet assayed to determine their values.

IMPACT Silver Corp. is a Tier 1 silver-focused mining and exploration
company with two producing silver mines at Zacualpan, Mexico, just
north of the Mamatla area; an advanced-stage silver project at
Zacatecas, Mexico; and, other projects in the Dominican Republic.
Energold Drilling Corp. (EGD: TSX.V) owns 6.6 million shares of IMPACT.

On behalf of the Directors of IMPACT Silver Corp.

"Frederick W. Davidson"
President, CEO

For further information, please contact:
Darrell Rader, Corporate Development
Telephone: 604-681-9501

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

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Copyright (c) 2007 IMPACT SILVER CORP. (IPT) All rights reserved. For
more information visit our website at http://www.impactsilver.com/ or
send mailto:inquiries@impactsilver.com
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