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

March 18, 2008

Vancouver, British Columbia - Trevali Resources Corp. (the "Company") is pleased to announce that follow-up diamond drilling has successfully intersected significant economic base and precious metal mineralization in all boreholes on its Magistral Norte target, at the historic Santander poly-metallic (Zinc Lead Silver Copper) mine. Santander is located in the province of Huaral, west-central Peru.

The Company is presently drilling the first of four high priority out-cropping mineralized zones termed Magistral Norte, Central, Sur and Puajanca respectively, following which it will commence testing several additional high priority geophysical exploration targets (Figure 1).

Magistral Norte Drilling

Highlights of assay results include (Figure 2 & Table 1):

  • Drillhole SAN-005 intersected 8.45 metres at 5.17% Zn, 2.73% Pb, 4.1oz (129 g/t) Ag & 0.14% Cu from 54.5 to 62.95 metres downhole.
  • Drillhole SAN-008 returned 12.8 metres at 4.46% Zn, 4.51% Pb, 2.9oz (92.3 g/t) Ag & 0.17% Cu from 49.4 to 62.2 metres downhole within which 3.7 metres intersected 8.49% Zn, 7.28% Pb, 6.4 oz (201.2 g/t) Ag & 0.28% Cu.
  • Drillhole SAN-011 intersected 15.7 metres at 4.48% Zn, 3.29% Pb, 1.7oz (52.4 g/t) Ag & 0.12% Cu from 135 to 150.7 metres downhole within which 7.55 metres returned 6% Zn, 4.96% Pb, 1.8 oz (57.6 g/t) Ag & 0.2% Cu.

    Economic poly-metallic mineralization is presently defined over 160 meters strike to depths of 120 metres from surface. Mineralization remains open and an aggressive exploration program is ongoing.

    Figure 1. Santander Project -- simplified property map showing location of Magistral and Puajanca prospects.

    A total of 32 diamond drill holes have been completed to date, 28 drill holes at the Magistral Norte Zone and four at Magistral South Zone, located approximately 700 metres to the southsoutheast. The company is in the process of securing additional diamond drill rigs in order to fast track exploration and development of this exciting new discovery.

    At Magistral Norte mineralization remains open to the North, South and particularly to the West at depth where multiple mineralized zones have been intersected over broad intervals of prospective host horizon.

    Property scale structural reconstruction and comparisons with the old Santander Mine, located 1.5 kilometres to the Southeast, indicates that the Magistral Norte Zone has an additional depth potential ranging from 300 to 500 metres vertical extent. Future deep drilling will test this hypothesis.

    Magistral Sur Drilling

    Magistral Sur is located approximately 700 metres southeast of Magistral Norte (Figure 1). Boreholes SAN-009, 013, 014 and 015 represent initial drill tests of the southern extent of the Magistral Sur Zone. They are presently at the geochemical laboratory for quality control purposes and will be released upon receipt of the final certified assay results.

    Table 1: Summary assay results - Santander Project
    *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.

    Project Background

    The Santander Property is located approximately 215 kilometres by road from Lima. The current 15,000 metre diamond drill program represents the first modern exploration on the large, 4,455-hectare (44 km2), mine and exploration lease.

    The former Santander Mine is estimated to have produced approximately 8Mt at 6 to 10% Zinc, between 1% and 4% Lead and 60 g/t Silver, with additional Copper credits on a single high grade pipe. Mining ceased in 11% Zn and historic underground drilling indicates that mineralization extends for at least an additional 200 metres depth.

    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 powerstation, 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. The Company is currently examining the feasibility of commencing production from the potentially large Tailings resource followed by high grade hard-rock production upon receipt of all necessary permits.

    The Company is presently completing the last of Phase I definition drilling on the Magistral Norte Zone and will commence resource drilling on the Magistral South zone located approximately 700 metres Southeast in due course.

    The present resource definition program is designed to define the mineralization to nominal open-pittable depths, although considerable geotechnical and geological analysis and modeling is required prior to assigning the optimum mining method. On receipt of additional drill rig(s) the Company hopes to commence exploration drilling on several high priority targets elsewhere on the property in addition to testing the very significant depth potential of the Magistral zones.

    Golder Associates of Vancouver have recently been on site and has been retained to complete a 43-101 compliant resource estimate and initial mine scoping study.

    Board of Directors

    Effective March 18, 2008 Dr. Mark D Cruise, the Company's President & CEO has accepted a board position, replacing Norm Godding who resigned as a director, to pursue other interests. The Company thanks Mr. Godding for his many years of dedication to the Company.


    The Company is pleased to announce that it has recently listed on the Berlin Borse under the code 4TI GR.

    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 (, 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.

Zone / Borehole (dip / azimuth)From - ToDownhole Interval*Zn %Pb %Ag oz (g/t)Cu%
Magistral Norte – outcropping – continuous chip samplen/a9m (Along line of chip sample)8.76%8.60%2.7oz (85g/t)0.33%
Magistral Norte SAN-00149.4 – 54m4.6m5.06%2.66%2.5oz (79.8g/t)-
(-47 / N60E)Inc 51.1 – 54m2.9m6.81%3.51%2.9oz (90.3g/t)-
Magistral Norte SAN-00242.8 – 71.2m28.4m5.16%3.66%2.9oz (90g/t)0.12%
(-45 / N60E)Inc 50.75 – 60.62m9.87m10.10%8.42%6.5oz (202g/t)0.26%
Magistral Norte SAN-00342.2 – 46.554.35m1.76%3.34%6.3oz (197g/t)-
(-45 / N60E)80.6 – 85.2m4.6m4.25%5.89%1.6oz (50g/t)-
Magistral Norte SAN-00445.9 – 54.4m8.5m2.07%2.61%0.9oz (29.5g/t)0.12%
(-43 / N64E)Inc 45.9 – 50.4m4.5m3.12%3.89%1.48oz (46.3g/t)0.21%
Magistral Norte SAN-00530.65 – 32.65m2m3.63%3.41%2.8oz (88.5g/t)0.14%
(-44 / N60E)51– 62.95m11.95m3.78%1.97%2.9oz (92.7g/t)0.10%
Inc 54.5 – 62.95m8.45m5.17%2.73%4.1oz (129g/t)0.14%
Inc 54.5 – 59.95m5.45m7.50%4%6.3oz (198.6g/t)0.20%
Magistral Norte SAN-00657 – 59.5m2.5m4.92%1.50%5.6oz (177.1g/t)-
(-45 / N60E)
Magistral Norte SAN-00754.9 – 63.3m8.4m2.51%2.32%1.9oz (58.2g/t)-
(-45 / N60E)Inc 56.4 – 61.8m5.4m3.75%3.51%2.9oz (89.4g/t)-
Inc 59 – 61.8m2.8m6.09%6.13%4.7oz (147.4g/t)0.15%
Magistral Norte SAN-00849.4 – 62.2m12.8m4.46%4.51%2.96oz (92.3g/t)0.17%
(-45 / N62E)Inc 50.1 – 59.2m9.1m5.25%5.19%3.5oz (109.5g/t)0.20%
50.1 – 53.8m3.7m8.49%7.28%6.4oz (201.2g/t)0.28%
Magistral Norte SAN-01047.35-51.9m4.55m1.31%1.10%0.58oz (18.1g/t)-
(-44 / N60E)Inc 48.85 – 50.4m1.55m3.19%2.59%1.5oz (47.4g/t)-
54.6 – 62.9m8.3m2.27%2%1.3oz(40.4g/t)-
Inc 54.6 – 58.75m4.15m3.72%3.31%2.2oz (68.8g/t)-
79.7 – 82.1m2.4m3.80%5.16%1.67oz (52g/t)-
Magistral Norte SAN-011135 – 156.5m21.5m3.53%2.54%1.3oz(39.6g/t)-
(-50 / N63E)Inc 135 – 150.7m15.7m4.48%3.29%1.7oz (52.4g/t)0.12%
Inc 140.35 – 147.9m7.55m6%4.96%1.85oz(57.6g/t)0.20%
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