Trevali Mining Corporation ("Trevali" or the "Company")
(TSX:TV)(TSX:TV.WT)(OTCQX:TREVF)(LMA:TV)(FRANKFURT:4TI) provides a construction
update on its 2,000-tonne-per-day Santander Zinc-Lead-Silver mine in Peru.
Construction is very advanced in all areas and soft commissioning and testing of
various circuits and components is ongoing. Trevali and development partner
Glencore International anticipate commissioning to commence in late-March with
subsequent ramp-up to commercial production to follow thereafter.


A summary of key areas is as follows:

CRUSHING 

The approximately 60,000-tonne-capacity coarse feed storage area is complete.
The primary crushing area - jaw crusher and grizzly are installed. The secondary
and tertiary crushing - vibrating screens and crushers are installed. Service
crane installation is scheduled for early March. Grating and handrails are
approx. 90% complete and painting details are ongoing. The feed transfer tower
to the fine feed bin is completed and conveyors are advanced. Installation of
the cabin for the rock-breaker is outstanding and will occur over the upcoming
weeks.


FINE FEED BIN 

Fine Feed Bin construction is approx. 99% complete with approx. 1,200-tonne
capacity (Figure 1). 


MILL 

All four mills (rod-ball combination) are in place and aligned. Classifiers /
Cyclones are in place and cladding of the building is in progress. A
twenty-tonne maintenance crane is installed and commissioned.


FLOTATION 

Reagent tanks are installed. All flotation cells, zinc and lead (silver), are in
place. Various pumps and pump boxes are in place and installation is in
progress. Piping is predominantly complete. The maintenance crane installed and
fully commissioned (Figure 1).


COMPRESSORS 

All three compressors and flotation blowers are in place with building cladding
currently underway.


CONCENTRATE STORAGE 

Lead and zinc thickeners are complete. Zinc storage is complete - lighting
installed - installing fixtures (Figure 1). Construction crews are presently
focusing on the Lead concentrate storage area. There will be an estimated
one-months concentrate storage capacity in both areas.


TAILINGS MANAGEMENT FACILITY 

Tailings and reclaim pipelines are complete. The tailings basin (a closed
system) is complete and is fully lined with impervious geo-membrane. Thickener
construction is advancing.


POWER 

The approx. 67-kilometer Santander - National Grid transmission line was
energized on February 13th with operations currently transferring over to grid
power as various components and sub-stations are completed (Figure 2).
Underground development is now running on grid power.


The main electrical sub-station has been completed and is fully commissioned -
presently finalizing various electrical sub-stations on site (Figure 2).


Majority of cable trays are installed and cable pulling is in progress. Approx.
60 additional electricians are mobilizing to site to finalize wiring now that
physical installation of large equipment is essentially complete.


UNDERGROUND DEVELOPMENT 

Pre-production underground development is progressing with a primary focus on
the Magistral North and Central Zones. There are currently four levels of
development complete on Magistral North and two on Magistral Central (Figure 3).


Ongoing Footwall development and associated underground mapping in the Magistral
North zone has exposed several potentially significant replacement and vein
zones that were partially intersected but poorly defined by previous exploration
drilling.


These zones, termed Tortillitas - Manto 1 to 3, are currently traceable over
70-metres strike and approximately 60-to-80-metres vertically, and remain open.
In the uppermost levels they are relatively narrow averaging approximately
1.2-to-1.4-metres thick however by level 4, the deepest development level to
date, based on exposure, widths are increasing to 4-to-5 metres. A continuous
channel sample of one such zone returned 4.46 metres at 4.76% zinc, 3.96% lead
and 2.98 oz/t silver - please see News Release TV-NR-12-31 dated November 27th,
2012 for details. Future underground definition drilling will attempt to better
define such zones for potential inclusion in the Santander mine plan.


There are currently 107,000 tonnes of mineralized material grading 5.19% Zn,
0.99% Pb, 0.28% Cu & 1.46 oz/t Ag stockpiled for plant commissioning and
production ramp-up. The first production Simba (long-hole production drill) is
scheduled to mobilize to site in the first week of March.


To view Figures 1-3, please visit the following link:
http://media3.marketwire.com/docs/tv301_F1-3.pdf.


UPCOMING EVENTS 

Trevali is attending the 2013 Prospectors and Developers Association of Canada
(PDAC) International Convention and Investors Exchange in Toronto, March 3-6,
2013, at the Metro Toronto Convention Centre, South Building. Additionally, the
Company is also participating in PDAC's Core Shack program on March 3-4 on Level
700 of the Convention Centre.


The Company invites current and prospective shareholders to meet and speak with
members of its Executive Team at Investors Exchange booth No. 2927 (March 3-6)
and its Senior Geology Team at Core Shack booth No. 5024 (March 3-4) where
samples of drill core from all its advanced stage projects will be available for
review.


ABOUT TREVALI MINING CORPORATION 

Trevali is a zinc-focused base metals development company with active operations
in Canada and Peru.


In Peru, the Company is nearing production at its Santander zinc-lead-silver
mine where commissioning is scheduled to commence in late Q1-2013 with
subsequent ramp up to full 2,000-tonnes-per-day production.


In Canada, Trevali owns the Caribou mine and mill, Halfmile mine and Stratmat
polymetallic deposit all located in the Bathurst Mining Camp of northern New
Brunswick. Initial trial production from the Halfmile mine was successfully
undertaken in 2012 and the Company anticipates commencing operations at its
3,000-tonne-per-day Caribou Mill Complex in late-2013.


All of the Company's deposits remain open for expansion.

The common shares of Trevali are listed on the TSX (symbol TV), the OTCQX
(symbol TREVF) and on the Lima Stock Exchange (symbol TV). Warrants to purchase
common shares of Trevali are listed on the TSX (symbol TV.WT). For further
details on Trevali, readers are referred to the Company's website
(www.trevali.com) and to Canadian regulatory filings on SEDAR at www.sedar.com.


On Behalf of the Board of Directors of 

TREVALI MINING CORPORATION

Mark D. Cruise, President

This news release contains "forward-looking statements" within the meaning of
the United States private securities litigation reform act of 1995 and
"forward-looking information" within the meaning of applicable Canadian
securities legislation. Statements containing forward-looking information
express, as at the date of this news release, the Company's plans, estimates,
forecasts, projections, expectations, or beliefs as to future events or results
and the company does not intend, and does not assume any obligation to, update
such statements containing the forward-looking information. Such forward-looking
statements and information include, but are not limited to statements as to: the
accuracy of estimated mineral reserves and resources, anticipated results of
future exploration, and forecast future metal prices, anticipated results of
future electrical sales and expectations that environmental, permitting, legal,
title, taxation, socio-economic, political, marketing or other issues will not
materially affect estimates of mineral reserves. These statements reflect the
Company's current views with respect to future events and are necessarily based
upon a number of assumptions and estimates that, while considered reasonable by
the Company, are inherently subject to significant business, economic,
competitive, political and social uncertainties and contingencies.


These statements reflect the Company's current views with respect to future
events and are necessarily based upon a number of assumptions and estimates
that, while considered reasonable by the company, are inherently subject to
significant business, economic, competitive, political and social uncertainties
and contingencies. Many factors, both known and unknown, could cause actual
results, performance or achievements to be materially different from the
results, performance or achievements that are or may be expressed or implied by
such forward-looking statements contained in this news release and the company
has made assumptions and estimates based on or related to many of these factors.
Such factors include, without limitation: fluctuations in spot and forward
markets for silver, zinc, base metals and certain other commodities (such as
natural gas, fuel oil and electricity); fluctuations in currency markets (such
as the Peruvian sol versus the U.S. dollar); risks related to the technological
and operational nature of the Company's business; changes in national and local
government, legislation, taxation, controls or regulations and political or
economic developments in Canada, the United States, Peru or other countries
where the Company may carry on business in the future; risks and hazards
associated with the business of mineral exploration, development and mining
(including environmental hazards, industrial accidents, unusual or unexpected
geological or structural formations, pressures, cave-ins and flooding); risks
relating to the credit worthiness or financial condition of suppliers, refiners
and other parties with whom the Company does business; inadequate insurance, or
inability to obtain insurance, to cover these risks and hazards; employee
relations; relationships with and claims by local communities and indigenous
populations; availability and increasing costs associated with mining inputs and
labour; the speculative nature of mineral exploration and development, including
the risks of obtaining necessary licenses and permits and the presence of laws
and regulations that may impose restrictions on mining,; diminishing quantities
or grades of mineral reserves as properties are mined; global financial
conditions; business opportunities that may be presented to, or pursued by, the
Company; the Company's ability to complete and successfully integrate
acquisitions and to mitigate other business combination risks; challenges to, or
difficulty in maintaining, the Company's title to properties and continued
ownership thereof; the actual results of current exploration activities,
conclusions of economic evaluations, and changes in project parameters to deal
with unanticipated economic or other factors; increased competition in the
mining industry for properties, equipment, qualified personnel, and their costs.
Investors are cautioned against attributing undue certainty or reliance on
forward-looking statements. 


Although the Company has attempted to identify important factors that could
cause actual results to differ materially, there may be other factors that cause
results not to be as anticipated, estimated, described or intended. The Company
does not intend, and does not assume any obligation, to update these
forward-looking statements or information to reflect changes in assumptions or
changes in circumstances or any other events affecting such statements or
information, other than as required by applicable law.


Trevali's production plans at Caribou-Halfmile-Stratmat and Santander are based
only on Indicated and Inferred Mineral Resources and not Mineral Reserves and do
not have demonstrated economic viability. Inferred Mineral Resources are
considered too speculative geologically to have the economic considerations
applied to them that would enable them to be categorized as Mineral Reserves,
and there is therefore no certainty that the conclusions of the production plans
and Preliminary Economic Assessment (PEA) will be realized. Additionally where
Trevali discusses exploration/expansion potential, any potential quantity and
grade is conceptual in nature and there has been insufficient exploration to
define a mineral resource and it is uncertain if further exploration will result
in the target being delineated as a mineral resource.


FOR FURTHER INFORMATION PLEASE CONTACT: 
Trevali Mining Corporation
Steve Stakiw
VP, Investor Relations and Corporate Communications
(604) 488-1661 / Direct: (604) 638-5623
(604) 408-7499 (FAX)
sstakiw@trevali.com
www.trevali.com
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