Mr. Mark Cruise reports

TREVALI SIGNIFICANTLY INCREASES RESOURCES AT SANTANDER ZINC-LEAD-SILVER PROJECT IN PERU

Trevali Resources Corp. is providing the results of its November, 2010, mineral resource estimate update for the Santander zinc-lead-silver mine project in west-central Peru.

• Indicated mineral resource of 5,858,000 tonnes with an average grade of 3.86 per cent zinc, 1.35 per cent lead, 44 grams per tonne silver and 0.08 per cent copper for an estimated in situ metal inventory of 498 million pounds zinc, 174 million pounds lead, 8.25 million ounces silver and 9.7 million pounds copper at 3-per-cent zinc equivalent (i) cut-off.

• Inferred mineral resource of 4,806,000 tonnes grading 5.08 per cent zinc, 0.44 per cent lead, 21 grams per tonne silver and 0.07 per cent copper for an estimated in situ metal inventory of 538 million pounds zinc, 46 million pounds lead, 3.19 million ounces silver and 7.8 million pounds copper at a 3-per-cent ZnEq (i) cut-off.

• Mineralization remains open for expansion in all five deposits identified to date -- Magistral North, Central and South, Puajanca South, and the Santander pipe.

The updated resource estimate is based on 171 diamond drill holes (with a combined length of approximately 33,240 metres). The resource estimate was conducted by and under the supervision of Kevin Palmer, PGeo, an independent qualified person and senior resource geologist at Golder Associates Ltd. of Burnaby, Canada, and utilized a 3-per-cent ZnEQ (i) cut-off grade, which is the nominal base case estimated grade of material that can be mined and processed considering all applicable costs.

Additional highlights

• Significant increases in contained in situ metal in all resource categories -- indicated Zn (pounds) plus-51 per cent; Pb (pounds) plus-41 per cent; Ag (ounces) plus-49 per cent;
• Inferred Zn (pounds) plus-605 per cent; Pb (pounds) plus-216 per cent; Ag (ounces) plus-488 per cent at the 3-per-cent ZnEq (i) cut-off grade.
• Discovery costs of approximately .004 cent per in situ pound of base metal excluding silver.
• Identification and independent confirmation of very significant upside remaining in the historic Santander mine -- inferred resources of 3,321,000 tonnes returning 5.78 per cent Zn, 0.01 per cent Pb, 0.08 per cent Cu and 16 grams per tonne Ag.

"The resource estimate greatly increases the size of Santander and highlights the growing potential of the company's flagship project," stated Dr. Mark Cruise, president and chief executive officer of the company. "Given the anticipated compressed time frame to production we are well poised to benefit from forecast base metal, and in particular zinc, price increases going forward due to increasing global demand coupled with the slated closure of several marquee mines worldwide."

(i) Zinc equivalent (ZnEq) equals ((Ag price (g) times Ag recovery times Ag grade) plus (Pb price (t) times Pb recovery times (Pb grade (per cent) divided by 100) plus (Zn price (t) times Zn recovery times (Zn grade (per cent) divided by 100))) divided by Zn price (t). Golder utilized the three-year rolling average price for all three metals. Price for silver is ($14.90 per ounce) and that for Pb ($2,174), Zn ($2,079) and Cu ($6,504) is per tonne. A recovery of 85 per cent was applied to Ag, 90 per cent for Pb, 85 per cent for Zn and 60 per cent for Cu for calculating the ZnEq formula. The pounds metal are in situ and have not had any mining factors applied to them.

Santander project

The Santander zinc-lead-silver mine project is located approximately 215 kilometres by road from Lima, in the western extent of Peru's central polymetallic belt. Site infrastructure includes a fully refurbished 200-man camp and the Tingo hydroelectric power station located 17 kilometres down valley to the west. The company commenced exploration at Santander in November, 2007, discovering four new high-grade silver-lead-zinc replacement and massive sulphide bodies to date. Mineralization remains open in all three Magistral deposits, the Puajanca South deposit and the past-producing Santander pipe, and numerous high-priority targets remain to be tested.

Qualified person and quality control/quality assurance

EurGeol Dr. Cruise, Trevali's president and chief executive officer 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. Cruise and Tim Kingsley (senior geologist), 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.