SAG Mill motor transformer failure at Copper Mountain Mine

          SAG Mill motor transformer failure at Copper Mountain Mine

PR Newswire

VANCOUVER, May 16, 2013

Web Site: www.CuMtn.com
TSX: CUM

VANCOUVER, May  16, 2013  /PRNewswire/ -  Copper Mountain  Mining  Corporation 
(TSX: CUM) (the "Company" or "Copper Mountain")  announces that one of the two
ABB transformers powering the SAG Mill motors at the Copper Mountain mine  has 
experienced a  failure  of  one  set  of  coils  in  a  transformer  that  has 
temporarily interrupted the SAG mill operation.  The cause of the failure  is 
being evaluated  by  the supplier,  but  details  are not  yet  available.  A 
transformer from a ball mill is being moved  over to the SAG mill and the  SAG 
mill is scheduled to be back in production by Saturday, May 18, 2013.

As part of the original design of the concentrator, the SAG mill and two  ball 
mills have identical motors and  transformers that are interchangeable in  the 
event of a component failure. The Company is proceeding with its  contingency 
plan of relocating one of the Ball mill transformers to replace the failed SAG
mill transformer. This action will allow the mill to restart production  with 
the SAG Mill and one  Ball Mill. As these  are specialty transformers, it  is 
anticipated that it will take approximately  4 weeks to repair. As a  result, 
production will be limited to approximately 1000 TPH or 24,000 TPD during this
period. The Company has informed its'  insurance carrier of the incident  and 
the manufacturer of the transformer has sent a representative to assist at the
mine site. The damaged transformer is being shipped for rebuild in Edmonton.

Jim O'Rourke, President & CEO of Copper Mountain commented, "This transformer
failure is an extremely unfortunate event for the operation as our team has
been making significant strides in getting our SAG mill up to full capacity.
Immediate metal production will be impacted, but all resources are being made
to minimize the impact."

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 Company has  a 
strategic  alliance  with  Mitsubishi  Materials  Corporation  who  owns   the 
remaining 25%. The Copper Mountain mine commenced production in the summer  of 
2011, and  has  continued to  improve  its  operations during  the  year;  and 
attained design capacity in  the summer of  2012. The 18,000  acre site has  a 
resource of  approximately  5  billion  pounds  of  copper  and  remains  open 
laterally and at depth.  The mine has  significant exploration potential  that 
will need to  be explored  over the  next few  years to  fully appreciate  the 
properties full development potential. Additional information is available on
the Company's new web page at www.CuMtn.com.

On behalf of the Board of
COPPER MOUNTAIN MINING CORPORATION

Jim O'Rourke"

Jim O'Rourke, 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. 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.

SOURCE Copper Mountain Mining Corporation

Contact:

Galina Meleger, Corporate Communications 604-682-2992 ext.224 Email:Galina
@CuMtn.com or
Rod Shier, Chief Financial Officer 604-682-2992 ext.222 Email:Rod@CuMtn.com
Website:www.CuMtn.com
 
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