News Release

Trevali Intersects High Grade Zinc-Lead-Silver Mineralization At Santander Project, Peru

February 21, 2008

Drill Highlights Include:

28.4 metres @ 5.16% Zn, 3.66% Pb, 90g/t Ag (2.9oz) & 0.12% Cu
(including 17.89 metres @ 7.29% Zn, 6.19% Pb, 132g/t Ag (4.2oz) & 0.18% Cu)

Initiates Resource Definition Program

Vancouver, British Columbia - Trevali Resources Corp. (the "Company") is pleased to announce that initial discovery drilling has intersected significant economic base metal mineralization at the historic Santander poly-metallic (Zinc Lead Silver Copper) mine, in the province of Huaral, west-central Peru. Highlights of assay results include:

Figure 1: Santander Project - summary geological section, Magistral Norte.

Drillhole SAN-002 intersected 28.43 metres @ 5.16% Zinc, 3.66% Lead, 90 g/t Silver (2.9 oz) & 0.12% Copper within which significantly higher grade intervals occur (Figure 1 & Table 1).

Drillhole SAN-003 intersected multiple zones; 4.35 metres at 196 g/t Silver (6.3 oz), 1.76% Zinc & 3.34% Lead and 14.69 metres at 2.22% Zinc, 2.82% Lead & 29 g/t Silver (0.9 oz) including 4.6 metres graded 4.25% Zinc, 5.89% Lead & 50 g/t Silver (1.6 oz).

A total of twenty-one diamond drill holes have been completed to date, seventeen drill holes at the Magistral Norte Zone and four at Magistral South Zone, located approximately 700 metres to the south-southeast (Figure 2).

Figure 2: Santander Project - summary geology map and borehole location, Magistral Norte.

All drill holes have intersected significant base metal mineralization, from shallow depths to approximately 180 metres below surface outcrop. Mineralization remains open and an aggressive exploration campaign is in progress. Results will be released as they become available.

The Santander Property is located approximately 200 km by road from Lima (Figure 3). The current diamond drill program represents the first modern exploration on the large, 4,455-hectare (44 km2), mine and exploration lease. In light of this success and in order to fast-track its exploration and resource definition work programs, the Company has significantly ramped- up its efforts, with three diamond drill-rigs and two percussion rigs on-site. The Company is presently negotiating with drilling contractors in order to secure additional drill rigs.

Table 1: Summary assay results - Santander Project

Zone / Borehole
(dip / azimuth)
From - ToDownhole Interval*Grade

Magistral Norte –
outcropping –
continuous chip


(Along line
of chip sample)

8.76% Zn, 8.6% Pb, 85 g/t Ag (2.7oz) & 0.33% Cu

Magistral Norte
(-45 / N60E)

42.8 – 71.2m
Inc 46.86 – 64.75m
Inc 50.75 – 60.62m
Inc 52.75 – 58.24m





5.16% Zn, 3.66% Pb, 90g/t Ag (2.9oz) & 0.12% Cu

7.29% Zn, 6.19% Pb, 132g/t Ag (4.2oz) & 0.18% Cu

10.1% Zn, 8.42% Pb, 202g/t Ag (6.5oz) & 0.26% Cu

12.4% Zn, 10.1% Pb, 235g/t Ag (7.5oz) & 0.33% Cu

Magistral Norte
(-45 / N60E)

42.2 – 46.55
70.5 – 85.2m
Inc 80.6 – 85.2m




1.76% Zn, 3.34% Pb, 197g/t Ag (6.3oz)

2.22% Zn, 2.82% Pb, 29g/t Ag (0.9oz)

4.25% Zn, 5.89% Pb, 50/t Ag (1.6oz)

*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.

Figure 3: Santander Project - Location Map.

Project Potential

Considering the significant past production coupled with the notable early successes in the current exploration program and untested scope of the property, the Company believes that it has discovered a significant, underexplored, carbonate-replacement district with multiple ore-body potential. Globally such districts have the ability to form very significant metal accumulations typically ranging from 10 to 50Mt or greater.

Clearly the Company needs to conduct significantly more exploration in order to determine the ultimate size of the Santander District. Nevertheless, on the basis of these initial highly encouraging results and visual grade estimates of the 'as yet to be assayed' drill core, the Company is confident that it has identified the first of a number of economic, poly-metallic orebodies.

Project Background

The former Santander Mine is classified as a poly-metallic High Temperature Carbonate Replacement Deposit (HTC), or more simply a Carbonate Replacement Deposit (CRD). Modern mining activities commenced on the principal Santander Pipe in 1957, and continued until 1993, attaining a mining depth of approximately 480 metres from surface. Total production is estimated to have been 8Mt at 6 to 10% Zinc, between 1% and 4% Lead and 60 g/t Silver, with additional Copper credits.

Mineralization remains open at depth with reported zinc grades of approximately 11% in multiple replacement or "manto" bodies.

An initial 'due diligence' study by the Company in late 2007, confirmed the high-grade nature of the former producer, with values of up to 39.8% Zinc, 8.98% Lead, 324 g/t Silver (10.4oz) and 1.6% Copper determined through re-sampling of outcropping mineralization and historical diamond drillhole cores preserved on site (see TR-NR-07-01 for details).

In detail, site infrastructure includes a circa 1,000 person 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 Company owned Tingo hydro-electric power-station, located some 17 kilometres down-valley to the West.

Future Work

The Company is committed to fast-tracking this highly prospective, eminently accessible and exciting project to production in the shortest time-frame feasible. It is currently in advanced negotiations with the local stakeholders and with various engineering, environmental and ancillary support contractors, details of which will be announced in due course.


The Company is pleased to announce the following new addition to the Trevali management team:

Dr. Mark D Cruise, President & CEO
A base metal specialist, Mark completed his Ph.D. on the Irish Zinc Lead orefield and has extensive global base metal experience from grass-roots exploration through resource definition to production in Europe and the Americas on behalf of Pasminco Exploration and Anglo American, respectively. Mark was part of the technical team that defined, permitted and put the circa 22MT Lisheen Zinc-Lead underground mine into production on behalf of Anglo American.

Companaia Minerales Santander Inc. ("Santander")

The Company has increased its ownership of Santander's outstanding qualified liabilities from 61% on December 11, 2007, the date of Santander's creditors meeting (the "Creditors Meeting") to over 80% as at today's date. In acquiring this additional debt the Company has agreed to issue 1,000,000 shares from its capital stock as partial consideration to acquire US$4,123,965 of debt from one of Santander's major creditors.

In addition the Company, through its Peruvian subsidiary, has agreed to issue to Santander Holdings or its shareholders a total of 2,000,000 shares for services rendered to the Company in the Company's successful acquisition of its interest in the Property. Santander Holdings was the former sole shareholder of Santander and agreed in 2007 to assist the Company in acquiring the right to engage in exploration, development, processing and commercialization activities on the Santander property as well as the lease of the associated ore processing/concentrate plant together with a majority of the qualified liabilities of Santander. In addition, as Santander's sole shareholder, it consented, at the Creditors Meeting, to the transformation of Santander from a branch to a S.A. and to the reduction of Santander's share capital to zero and agreed not to participate in the recapitalization of Santander. Without the efforts and cooperation of Santander Holdings it is very unlikely the Company would have been successful in acquiring its interest. The issuance of the shares was subject to the Company acquiring a minimum of 80% of the qualified liabilities of Santander and the approval of Santander's reorganization at the Creditors Meeting.

Qualified Person and Quality Control/Quality Assurance

EurGeol Dr. Mark D. Cruise, Trevali's President 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, 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 (, Canadian regulatory filings on SEDAR at

On Behalf of the Board of Directors of

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

Contact Information: Mark Cruise,

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