Copper Mountain Mining Achieves "AA" TSM Rating for Tailings Management

VANCOUVER, March 3, 2020 - Copper Mountain Mining Corp. (TSX:CMMC | ASX:C6C) ("Copper Mountain" or the "Company) is pleased to announce that it has achieved a "AA" rating for its Tailings Management under the Towards Sustainable Mining (TSM) standards. The third party audit for Copper Mountain's Tailings Management was completed by Klohn Crippen Berger Ltd.

The Company has wholly adopted the TSM standards and is targeting to achieve a "AA" rating on all eight TSM protocols by the end of 2021. "AA" ratings for Tailings Management, Safety and Health, and Aboriginal and Community Outreach are planned by the end of 2020. Biodiversity Conservation Management, Crisis Management Planning, Energy Use and Greenhouse Gas Emissions Management, Child and Forced Labour Free Certification, and Water Stewardship are planned for the end of 2021.

The Company is committed to transparent and continuous disclosure on its ESG programs and will provide regular updates on its TSM progress.

"Excellence in ESG is not just a priority at Copper Mountain but is ingrained in our cultural DNA" stated Gil Clausen, Copper Mountain's President and CEO. "It is an integral element of our long-term business model's success."

Mr. Clausen added, "In our view, mining with integrity and transparency is the only way to operate. We are committed to sound and sustainable practices in our programs, policies and systems as well as in our disclosure. Receiving a 'AA' rating for our tailings management and setting tangible TSM attainment goals demonstrates our commitment. This is just an example of our many ESG initiatives. We look forward to sharing our progress and achievements with all our stakeholders on a regular basis."

About Copper Mountain Mining Corporation:

Copper Mountain's flagship asset is the 75% owned Copper Mountain mine located in southern British Columbia near the town of Princeton. The Copper Mountain mine produces about 90 million pounds of copper equivalent per year with a large resource that remains open laterally and at depth. Copper Mountain also has the permitted, development-stage Eva Copper Project in Queensland, Australia and an extensive 4,000 km² highly prospective land package in the Mount Isa area. Copper Mountain trades on the Toronto Stock Exchange under the symbol "CMMC" and Australian Stock Exchange under the symbol "C6C".

Additional information is available on the Company's web page at www.CuMtn.com.

On behalf of the Board of

Copper Mountain Mining Corp.

"Gil Clausen"

Gil Clausen, P.Eng.
Chief Executive Officer

Note: This release contains forward-looking statements that involve risks and uncertainties. These statements may differ materially from actual future events or results. Guidance is based on a number of assumptions and estimates as of December 31, 2019, including, among other things, assumptions about metal prices and anticipated costs and expenditures. Guidance involves estimates of known and unknown risks, uncertainties and other factors which may cause the actual results to be materially different. Readers are referred to the documents, filed by the Company on SEDAR at www.sedar.com, specifically the most recent reports which identify important risk factors that could cause actual results to differ from those contained in the forward-looking statements. The Company undertakes no obligation to review or confirm analysts' expectations or estimates or to release publicly any revisions to any forward-looking statement.

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SOURCE Copper Mountain Mining Corp.