Trevali Resources Corp.: Surface Sampling Significantly Expands Puajanca Zone

VANCOUVER, BRITISH COLUMBIA, Nov 02 (MARKET WIRE) --
Trevali Resources Corp. ("Trevali" or the "Company") (CNSX: TV)(PINK
SHEETS: TREVF)(FRANKFURT: 4TI) is pleased to announce that detailed
structural and geological mapping and associated geochemical sampling has
significantly expanded the surface expression of the silver-rich Puajanca
Zone at its Santander Project in west-central Peru. Drilling is currently
in progress.

Key highlights include:

- Very significant increase in mapped mineralization, now over an area of
420 metres by 250 metres; presently defined in two core areas - Puajanca
North and Puajanca South.

- Samples returned values up to 907 g/t (26.5 oz/t) Ag, 54% Pb and 30%
Zn. Grades average 172 g/t (5 oz/t) Ag, 11.61% Pb and 4.5% Zn from 54
samples (mineralized and barren geological samples).

- Mineralization at Puajanca North has been mapped over an area of 70 by
100 metres, returning average values of 220 g/t (6.4 oz/t) Ag, 15.59% Pb
and 7.18% Zn (22 samples).

- Puajanca South mineralization returned channel samples of up to 24
metres @ 83 g/t (2.4 oz/t) Ag, 6.22% Pb and 4.46% Zn.

- Metal ratios (Pb values significantly higher than Zn) are interpreted
to indicate that the Puajanca Zone could be located in the uppermost
portions of a 'productive' polymetallic system - the fourth discovered to
date on the property. Consequently Puajanca may contain significant depth
potential (Puajanca is approximately 700 hundred metres higher,
stratigraphically, than the past producing Santander orebody located
approximately 2km SSE). Currently sampled mineralization resides in a
shale rich geological unit with the more favorable 'cleaner' limestone
host located at depth.

- Mineralization is spatially associated with and sits above the
southeastern margin of a very large, approximately 1km2), geophysical
anomaly that may represent the hydrothermal system source at depth. All
mineralization discovered elsewhere on the property to date has a
similar, strong geophysical response.

RESULTS IN DETAIL

The Puajanca Zone is located only 2.5 kilometres NE of the Santander
Plant site and 1 kilometre NNE of the Magistral North deposit.

PUAJANCA NORTH

Structurally controlled mineralization (vein and stockwork) is currently
present over a 70 by 100 metre area and remaining open to the northeast.
An average of 22 characterization samples returned values of 220 g/t (6.4
oz/t) Ag, 15.6% Pb and 7.12% Zn with values ranging up to 907 g/t (26
oz/t) Ag, 54.38% Pb and 21.4% Zn respectively. It should be noted that
sampling includes both low grade wall-rock and structures.

The area also contains numerous high-grade structures traceable on
surface over appreciable strike lengths - examples include 355 metres
strike by 0.4 metres average width at 250 g/t (7.3 oz/t) Ag, 20.11% Pb
and 1.73% Zn (n = 5) and 125 metres strike by 0.4 metres width at 498 g/t
(14.5 oz/t) Ag, 31.6% lead and 3.72% zinc (n = 3).

PUAJANCA SOUTH

Four detailed channel samples were collected normal to the Puajanca South
replacement body. Channels were spaced approximately 20 metres apart,
varied from 8 to 24 metres long and returned the following values:

Summary assay results - Puajanca South Body - Channels ordered north to
south.
---------------------------------------------------------------------------
---------------------------------------------------------------------------
Interval
Channel (m) Ag g/t (oz) Pb % Zn % Cu %
---------------------------------------------------------------------------
---------------------------------------------------------------------------
Channel 1 8m 50.4g/t (1.5oz) 5.68 5.16 -
(Northern most edge of body)
---------------------------------------------------------------------------
Including 5m 72.4g/t (2.1oz) 8.31 7.27 -
---------------------------------------------------------------------------
---------------------------------------------------------------------------
Channel 2 17m 90g/t (2.6oz) 5.11 3.58 -
---------------------------------------------------------------------------
Including 9m 137.9g/t (4oz) 6.49 5.3 -
---------------------------------------------------------------------------
---------------------------------------------------------------------------
Channel 3 24m 83.5g/t (2.4oz) 6.22 4.46 -
---------------------------------------------------------------------------
Including 15m 120.8g/t (3.5oz) 8.44 6 -
---------------------------------------------------------------------------
Including 6m 188g/t (5.5oz) 9.97 10.1 -
---------------------------------------------------------------------------
---------------------------------------------------------------------------
Channel 4 9m 31.3g/t (0.9oz) 3.75 1.37 -
(Southern most edge of body)
---------------------------------------------------------------------------
---------------------------------------------------------------------------
Samples comprised of 1m continuous sawn channel samples. N = 59.

PROJECT BACKGROUND

The Santander silver-lead-zinc mine project is located approximately 215
km by road from Lima, in the western extent of Peru's world-class Central
Mineral Belt. The mine previously operated from 1958- 1993 targeting a
single Carbonate Replacement Deposit-type pipe and manto structure, the
Santander Orebody.

Substantial site infrastructure includes a fully refurbished 200-man camp
and associated support facilities, and the Tingo hydroelectric
power-station located 17 km down-valley to the west. The Santander
project and the considerable existing infrastructure form a highly
strategic asset in this mining district. The Company commenced
exploration at Santander in November 2007 discovering four new high-grade
silver-lead-zinc replacement and massive sulphide bodies to date.

A recently completed independent resource estimate of the three Magistral
deposits reviews a total Indicated Mineral Resource of 5,298,000 tonnes
with an average grade of 3.34% zinc, 1.27% lead and 38 g/t silver (using
a 2% ZnEQ(i) cut-off grade) - for a contained metal inventory of 390
million lbs. zinc, 149 million lbs. lead and 6.5 million oz. silver in
the Indicated category. An additional Inferred Mineral Resource of
2,244,000 tonnes grading 2.92% zinc, 0.50% lead and 18 g/t silver was
also reviewed in the three deposits using the same cut-off grade - for
contained metals of 144 million lbs. zinc, 25 million lbs. lead and 1.3
million oz. silver. All three Magistral bodies remain open at depth and
to the East.

Additionally, a further 100 million contained lbs. of zinc are estimated
to be present in the 1,656,000 indicated tonnes grading at 2.74% zinc
(using a 2.0% zinc cut-off grade) at the Santander Tailings Impoundment.

(i) ZnEQ = ((Ag Price(g) x Ag Recovery x Ag Grade) + (Pb Price(t) x Pb
Recovery x (Pb Grade(%)/100)+(Zn Price(t) x Zn Recovery x (Zn
Grade(%)/100)))/Zn Price(t). Golder utilized the three year rolling
average price for all three metals. Price for silver is per gram
($0.43339) and that for Pb ($1,983) and Zn ($2,742) is per tonne. A
recovery of 85% was applied to Ag, 94% for Pb and 91% for Zn based upon
Trevali's metallurgical testwork. A 2% ZnEQ(i) cut-off grade is the
nominal base case estimated grade of material that can be mined and
processed considering all applicable costs.

Qualified Person and Quality Control/Quality Assurance

EurGeol Dr. Mark D. Cruise, Trevali's President and CEO and a qualified
person as defined by National Instrument 43-101, has supervised the
preparation of the scientific and technical information that forms the
basis for this news release. Dr. Cruise is not independent of the
Company, as he is an officer and shareholder.

The work programs at Santander were designed by, and are supervised by,
Dr. Mark D. Cruise, President & CEO, Trevali, and Tim Kingsley
(independent geological consultant), who together are responsible for all
aspects of the work, including the quality control/quality assurance
program. On-site personnel at the project rigorously collect and track
samples which are then security sealed and shipped to ACME Laboratories,
Vancouver, for assay. ACME's quality system complies with the
requirements for the International Standards ISO 9001:2000 and ISO 17025:
1999. Analytical accuracy and precision are monitored by the analysis of
reagent blanks, reference material and replicate samples. Quality control
is further assured by the use of international and in-house standards.
Blind certified reference material is inserted at regular intervals into
the sample sequence by Trevali personnel in order to independently assess
analytical accuracy. Finally, representative blind duplicate samples are
routinely forwarded to ACME and an ISO-compliant third party laboratory
for additional quality control.

The resource estimates on the Magistral North, Central and South deposits
were conducted by and under the supervision of Kevin Palmer P.Geo., an
independent qualified person employed by Golder Associates Ltd. of
Vancouver, Canada.

About Trevali Resources Corp.

The Company in conjunction with partner Glencore International A.G. has
entered into a definitive development agreement for the Santander project
that will see Glencore provide and operate a 2,000- tonne-per-day
concentrate plant, undertake mining operations on a 'contractor/toll
basis' and enter into a long-term concentrate offtake agreement for 100%
of Santander project production at benchmark terms.

Additionally, through its wholly owned subsidiary Trevali Renewable
Energy Inc., the Company is undertaking a significant upgrade of the
Tingo run-of-river hydroelectric generating facility along with
transmission line upgrades and extensions to allow the potential sale of
surplus power into the Peruvian National Energy Grid. The common shares
of the Company are currently listed on the CNSX (symbol TV). For further
details on the Company, readers are referred to the Company's web site
(www.trevali.com) and to Canadian regulatory filings on SEDAR at
www.sedar.com.

On Behalf of the Board of Directors of TREVALI RESOURCES CORP.

Mark D. Cruise, President

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

Contacts:
Trevali Resources Corp.
Steve Stakiw
Manager - Corporate Communications
(604) 488-1661
(604) 408-7499 (FAX)
sstakiw@trevali.com
www.trevali.com

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