Copper Mountain Mining Files NI 43-101 Technical Report for its Copper Mountain Mine

VANCOUVER, Sept. 30, 2022 - Copper Mountain Mining Corp. (TSX: CMMC) (ASX: C6C) (the "Company" or "Copper Mountain") announces that it has filed a technical report (the "2022 Technical Report") for its Copper Mountain Mine prepared in accordance with National Instrument 43-101 - Standards for Disclosure of Mineral Projects. The 2022 Technical Report corresponds to the Company's September 28, 2022 news release entitled "Copper Mountain Mining Announces a 57% Increase in Copper Mineral Reserves at the Copper Mountain Mine and Updated Life of Mine Plan."

The full technical report is available on SEDAR at www.sedar.com and on the Company's website at www.CuMtn.com.

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 currently produces approximately 90 million pounds of copper equivalent. Copper Mountain also has the development-stage Eva Copper Project in Queensland, Australia and an extensive 2,100 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.
President and Chief Executive Officer

Website: www.CuMtn.com

Cautionary Note Regarding Forward-Looking Statements
This news release may contain forward-looking statements and forward-looking information (together, "forward-looking statements") within the meaning of applicable securities laws. All statements, other than statements of historical facts, are forward-looking statements. Generally, forward-looking statements can be identified by the use of terminology such as "plans", "expects", "estimates", "intends", "anticipates", "believes" or variations of such words, or statements that certain actions, events or results "may", "could", "would", "might", "occur" or "be achieved". In this news release, certain forward-looking statements are identified, including anticipated production at the Copper Mountain Mine. Forward-looking statements involve risks, uncertainties and other factors that could cause actual results, performance and opportunities to differ materially from those implied by such forward-looking statements. Factors that could cause actual results to differ materially from these forward-looking statements include the risks set out in Copper Mountain's public documents, including in each management's discussion and analysis, filed on SEDAR at www.sedar.com. Although Copper Mountain believes that the information and assumptions used in preparing the forward-looking statements are reasonable, undue reliance should not be placed on these statements, which only apply as of the date of this news release, and no assurance can be given that such events will occur in the disclosed time frames or at all. Except where required by applicable law, Copper Mountain disclaims any intention or obligation to update or revise any forward-looking statement, whether as a result of new information, future events or otherwise.

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SOURCE Copper Mountain Mining Corp.