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Trevali Continues to Intersect Broad Zones of Silver - Base Metal Mineralization at Santander, Peru

May 28, 2008

Highlights include:
74.1m @ 7.7 oz (240g/t) Silver equivalent
incl 45.45m @ 10.6 oz (331.7 g/t) Silver equivalent
incl 13.9m @ 21.4 oz (664.9g/t) Silver equivalent
and
7.9m @ 22.7 oz (707g/t) Silver equivalent

TRC-NR-08-07


Vancouver, British Columbia... Trevali Resources Corp. ("Trevali" or the "Company") (CNQ: ZINC, Frankfurt: 4TI, Pink Sheets: TREVF) is pleased to announce that diamond drilling continues to intersect broad zones of silver-rich polymetallic mineralization at its Santander project in west-central Peru.

A total of 72 diamond drill holes have been completed to date, 40 drill holes at the Magistral Norte zone (drilled on 20-metre spaced section lines), 23 holes drilled on 40-metre centers at Magistral Sur and 9 holes at Magistral Central. The Company has received assay results from thirty of the holes drilled to date (Figure 1 & Table 1).

The current drill program represents the first modern exploration on the property and is designed to test the Magistral targets to approximately 200 metres vertical depth. The majority of the holes have intersected significant silver-rich sulphide mineralization that remains open at depth in all three sulphide bodies. Property-scale structural reconstructions and comparisons with the past-producing Santander Pipe-structure indicates the Magistral zones have very significant additional depth potential, conservatively interpreted to range from 300 to 500 metres vertical extent. Drilling is in progress.

Magistral Norte, the most northerly of the Magistral bodies lies only 1.5 kilometres north of the Company's mineral processing plant.

The Company anticipates low-cost, near-term production from the potentially large former tailing resource (see NR-08-03 for details). It is also currently finalizing high-grade hard-rock production flow sheets and plant re-design and refurbishments that will be announced in due course.

Zone / Borehole

(dip / azimuth)

From - To

Downhole

Interval*

Ag equivalent**

Ag oz (g/t)

Pb %

Zn %

Cu%

Magistral Norte

SAN-021

(-63 / N59E)

162.65 – 213.2m

Inc 167.15 – 170.65m

184.05 – 198.1m

Inc 191.15 – 198.1m

50.55m

3.5m

14.05m

6.95m

4.3oz (133.5g/t)

15.9oz (494g/t)

8oz (248.5g/t)

12oz (377g/t)

0.8oz (26.6g/t)

5.4oz (167.7g/t)

0.7oz (22.2g/t)

1oz (31.9g/t)

1.1%

1.8%

2.6%

3.9%

1.5%

5.8%

2.9%

4.5%

-

0.1%

-

-

Magistral Norte

SAN-022

(-62 / N62E)

157.6 - 189.8m

Inc 161.1 – 178.65m

Inc 161.1 – 167.9m

Inc 173.15 – 176.15m

188.8 – 194.55m

206.1 – 210.2m

32.2m

17.55m

6.8m

3m

5.75m

4.1m

6.1oz (191.4g/t)

8.6oz (269.2g/t)

15.30z (475.9g/t)

14.6oz (454.2g/t)

9.2oz (286g/t)

6.8oz (212g/t)

0.99oz (31g/t)

1.4oz (42.9g/t)

2.6oz (81g/t)

1.6oz (51g/t)

0.7oz (22.8g/t)

1.1oz (35.3g/t)

1.8%

2.5%

5.1%

4.9%

3.1%

2.4%

2.1%

3%

4.1%

4.9%

3.3%

1.9%

-

-

0.12%

-

-

-

Magistral Norte

SAN-023

(-62 / N60E)

161.8 - 197.5m

Inc 167.45 – 179.35m

Inc 186.5 – 194.5m

208.3 – 219.4m

35.7m

11.9m

8m

11.1m

6.2oz (193g/t)

9.14oz (284.3g/t)

11.4oz (355g/t)

4.23oz (131.7g/t)

1oz (33.9g/t)

1.7oz (53.5g/t)

1.1oz (34.7g/t)

0.4oz (12.8g/t)

1.8%

2.56%

3.55%

1.37%

2.07%

3.05%

3.77%

1.52%

-

-

0.14%

-

Magistral Norte

SAN-024

(-48 / N60E)

143.1 – 162.5m

Inc 143.1 – 157.2m

Inc 143.1 – 147.15m

19.4m

14.1m

4.05m

6.65oz (206.8g/t)

7.8oz (242.5g/t)

8.8oz (275g/t)

1.6oz (50.5g/t)

2.1oz (65.6g/t)

3.4oz (106.5g/t)

1.6%

1.8%

1%

2.2%

2.5%

3.1%

-

-

-

Magistral Norte

SAN-025

(-51 / N61E)

144.8 - 180.45m

Inc 157.7 – 172

Inc 157.7 – 161.7m

35.65m

14.3m

4m

8.7oz (273g/t)

15.8oz (491.5g/t)

34.4oz (1069g/t)

1oz (31.8g/t)

1.8oz (56.1g/t)

4oz (125.2g/t)

2.75%

4.8%

9.85%

2.78%

5.15%

11.5%

0.1%

0.19%

0.48%

Magistral Norte

SAN-026

(-64 / N59E)

174.6 - 231.5m

Inc 174.6 – 181.5m

Inc 226.5 – 231.5m

56.9m

6.9m

5m

6.75oz (210g/t)

13.6oz (424.5g/t)

15.4oz (480.7g/t)

2.7oz (83.1g/t)

2.2oz (68.3g/t)

2.9oz (91.4g/t)

1.56%

4.45%

4.45%

1.53%

4.21%

4.58%

-

-

0.13%

Magistral Norte

SAN-027

(-62 / N59E)

170 – 172.6m

2.6m

14.9oz (464.4g/t)

5.1oz (161.2g/t)

3.27%

4.1%

-

Magistral Norte

SAN-028

(-63 / N55E)

167.8 – 241.5m

Inc 167.4 – 212.85m

Inc 167.4 – 181.3m

74.1m

45.45m

13.9m

7.7oz (240g/t)

10.6oz (331.7g/t)

21.4oz (664.9g/t)

1.9oz (58.3g/t)

2.7oz (83.2g/t)

7.1oz (221.4g/t)

1.87%

2.47%

4.05%

2.28%

3.17%

6.13%

0.08%

0.12%

0.18%

Magistral Norte

SAN-029

(-50 / N60E)

139.75 – 168.45m

Inc 139.75 – 147.65m

Inc 155.85 – 168.45m

28.7m

7.9m

12.6m

15.2oz (474.3g/t)

22.7oz (707g/t)

18oz (560.3g/t)

2.3oz (72.2g/t)

3.5oz (109g/t)

2.8oz (86.8g/t)

4.53%

6.89%

5.96%

4.81%

6.75%

5.25%

0.13%

0.27%

0.09%

Magistral Norte

SAN-030

(-49 / N58E)

129.95 – 167.3m

Inc 146.05 – 160.2m

33.75m

14.15m

4oz (126.8g/t)

8.6oz (269g/t)

0.7oz (22.7g/t)

1.5oz (46.7g/t)

1.17%

2.5%

1.36%

2.91%

-

-


*Exploration to date suggests mineralized zones or mantos are dipping west at approximately 70 degrees; however, it is anticipated that future mapping of an underground exploration adit will allow a more accurate estimation of true thickness.

**Silver equivalent calculated using following metal prices: Ag US$15.00/oz, Pb US$0.90/lb, Zn US$0.90/lb, Cu US$3.00/lb and assumes 100% recoveries.


Figure 1. Santander Project -- summary geology map and drillhole location, Magistral Norte.


Project Background

The Santander Project is located approximately 215 km by road from Lima, in the western extent of Peru's prolific Cerro de Pasco mineral district. The current diamond drill program represents the first modern exploration on the large, 4,455-hectare (44 km2), mine and exploration lease.

Site infrastructure at the formerly-producing operation includes a large camp and associated support facilities, an ore processing / concentrator plant (including various crushers, mills and cell houses) able to produce zinc, lead-silver and copper concentrates, and the Tingo hydroelectric power-station, located some 17-km down-valley to the west.

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 Trevali were designed by, and are supervised by, Mark D. Cruise, President & CEO, Trevali, and Les Oldham, General Manager, Consultora Minera Anglo Peruana S.A.(independent geological consultants), 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. ACMEs 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.

About Trevali Resources Corp.

The Company is currently exploring and conducting various scoping level studies on the former Santander poly-metallic mine Peru in order to ascertain as best as possible the cost and feasibility of re-commencing mining and milling operations in a timely manner should exploration prove to be successful.

The common shares of the Company are currently listed on the CNQ (symbol ZINC), for further details on the Company readers are referred to the Company's web site (www.trevaliresources.com), Canadian regulatory filings on SEDAR at www.sedar.com.

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

"Mark D. Cruise" (signed)
Mark D Cruise, President

Contact Information:
Steve Stakiw, Manager -- Corporate Communications
Email: sstakiw@trevaliresources.com
Phone: (604) 408-7488 / Fax: (604) 408-7499

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

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