Copper Mountain Mining : Announces Annual and Special Meeting and Clarification

Copper Mountain Mining Corporation

Suite 1700, 700 West Pender Street

Vancouver, BC V6C 1G8 Telephone: (604) 682-2992 Facsimile: (604) 682-2993

Website:www.CuMtn.com

TSX:CMMC ASX:C6C

COPPER MOUNTAIN ANNOUNCES ANNUAL AND

SPECIAL MEETING AND CLARIFICATION

This document corrects and replaces the press release that was sent today June 6, 2018 at 5:30 AM PST. The date of the annual and special meeting of shareholders has been corrected for a typo error in the release as to the date of the meeting being held. The date should have read June 20, 2018.

Vancouver, British Columbia - June 6, 2018 - Copper Mountain Mining Corporation (TSX: CMMC / ASX: C6C)

(the "Company" or "Copper Mountain") confirms that it will be holding its annual and special meeting of shareholders (the "Meeting") on Wednesday, June 20, 2018, at 2:00 p.m. (Vancouver time). The Meeting will be held at the Terminal City Club, 837 West Hastings Street, Vancouver, B.C. in the Ceperley-Walker room.

Only shareholders of record at the close of business on the record date of May 16, 2018 are entitled to vote at the Meeting.

Copper Mountain announces a clarification to its practice for the appointment of its lead independent director. The lead independent director will be reconfirmed following the Meeting from among the independent directors that will be elected at the Meeting. This has been the ongoing practice of the Company since the inception of its written Charter of the Corporate Governance Committee ("the Charter"). The Charter requires that a lead independent director be appointed if the Chairman of the Board is deemed non-independent. The Chairman of the Board after the Meeting is expected to be Jim O'Rourke upon his successful election. Mr. O'Rourke will be deemed to be non-independent at that time on the basis that he was the President and CEO until May 31, 2018 and will only be considered independent after sufficient time has lapsed after the conclusion of his employment with Copper Mountain. This announcement is not a change in the practice of the Company and the Board of Directors, but rather a continuation of their commitment to good governance.

About Copper Mountain Mining Corporation:

Copper Mountain's flagship asset is the Copper Mountain mine, located in southern British Columbia near the town of Princeton. The Company has a strategic alliance with Mitsubishi Materials Corporation who owns 25% of the mine. The Copper Mountain mine has a large resource of copper that remains open laterally and at depth. This significant exploration potential is being explored to maximize the property's full development potential. Copper Mountain's Cloncurry project in Queensland, Australia, includes the development-ready Eva Copper Project and an extensive exploration potential within the Company's 379,000 hectare highly prospective land package.

Additional information is available on the Company's website atwww.CuMtn.com.

On behalf of the Board of

COPPER MOUNTAIN MINING CORPORATION

"Gil Clausen"

Gil Clausen, P.Eng. Chief Executive Officer

For further information, please contact:

Dan Gibbons, Investor Relations 604-682-2992 ext. 238 Email:Dan@cumtn.com Website:www.CuMtn.com

Note: This release contains forward-looking statements that involve risks and uncertainties. These statements may differ materially from actual future events or results.

Readers are referred to the documents, filed by the Company on SEDAR atwww.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.