Continue to full website

At Trevali, we are asking ourselves some big questions about what it means to be a global mining company in today’s world.

We know that modern society needs mineral resources and the products that mining helps create.

As times change, society’s expectations of us change too.

Expectations about environmental responsibility.

Around what it means to be a good corporate citizen.

About being a company that is sustainable for the long-term.

And one that benefits its employees, its communities and its shareholders.

At Trevali, we are excited by these evolving expectations. They inspire innovative ideas and create new opportunities for us to enhance how our business operates.

Motivated by the potential that these questions present, we are focused on constant, incremental improvements in our business. Bringing creativity, agility and innovation into the very heart of the company. Operating efficiently and with the highest of safety standards. We are working to make ongoing improvements that contribute to achieving larger long-term goals.

By asking, and answering, these questions, we will create a different kind of mining company, and a new Trevali.

We embark on this journey with the key ingredients for success: strong assets, potential for resource expansion, a great balance sheet, and an engaged team of professionals.

As a reflection of our new vision, we are also launching a new corporate identity.

We are just getting started. Watch this space.

Trevali – the Future of Mining


Ricus Grimbeek
President & Chief Executive Officer

Halfmile Mine



New Brunswick, Canada

Project Status

Fully permitted underground mine with initial production levels in place




  • Trial underground mining/production in 2012 of over 100,000 tonnes of mineralized material - providing metallurgical/recovery data
  • Positive PEA study completed in 2017 evaluating an integrated Halfmile-Stratmat development plan

Halfmile Mine

The Halfmile Mine is located in the Bathurst Mining Camp of northern New Brunswick, Canada, approximately 60 kilometres southwest of Bathurst and 40 kilometres from the past-producing Brunswick 12 Mine.

Geology and Mineralization

The Halfmile Deposit contains four sulphide zones: Upper, Lower, Deep and North. The deposit is a volcanic-sediment-hosted massive sulphide deposit and is one of over 45 massive sulphide deposits in the Bathurst Mining Camp. Rocks are of Ordovician age and have undergone a complex history of polyphase folding and faulting. The deposit is structurally overlain by rhyolitic and dacitic rocks as well as disconformable quartz-wackes and pelites. To the footwall of the massive sulphide package are alkali basalts and thin bedded feldspathic wacke/shales. Rocks have been metamorphosed to the greenschist facies. The entire package of rocks has been stratigraphically over turned.

Mineral Resource Estimates

Mineral Resources as at December 31, 2018(1,2)

Tonnage Grade Metal
Category Quantity Mt Zn % Pb % Cu % Ag g/t Au g/t Zn M lbs Pb M lbs Cu M lbs Ag K oz Au K oz
Measured 0.40 5.92 1.99 0.46 40 0.60 54 18 4.0 520 10
Indicated 7.40 7.00 2.37 0.16 35 0.29 1,146 389 26.0 8,450 70
Measured & Indicated 7.80 6.94 2.35 0.18 36 0.30 1,199 407 31.0 8,980 80
Inferred 6.50 5.62 1.51 0.15 23 0.10 806 216 21.0 4,720 20

(1) All mineral resources have been estimated in accordance with the CIM Definition Standards. Mineral resources are inclusive of mineral reserves. Mineral resources that are not mineral reserves do not have demonstrated economic viability. Numbers may not add up due to rounding.
(2) The Halfmile Underground Project mineral resource estimate is reported based on 5% zinc equivalent cut-off grade with metal prices of: US$1.05/lb zinc, US$0.95/lb lead, US$20.00/oz silver, FX: US$/CAD$0.80. The Halfmile Underground Project mineral resource estimate was prepared and approved by Professional Geologist Gilles Arseneau (P.Geo.), a consultant with SRK Consulting (Canada) Inc., who is an independent Qualified Person as defined in NI 43-101, with an effective date of October 26, 2017.

Development Plan

In 2017 Trevali commissioned a preliminary economic assessment (PEA) led by SRK Consulting (Canada) Inc. reviewing the development potential for its wholly owned Halfmile-Stratmat massive sulphide zinc-lead-silver deposits in the Bathurst mining camp of New Brunswick, Canada. Full details are available in the associated news release: