Copper Mountain Mining Corporation - 2012 Phase 1 Exploration Drill Results

Web Site: www.CuMtn.com
TSX: CUM 

VANCOUVER, Sept. 5, 2012 /PRNewswire/ - Copper Mountain Mining Corporation ("CMMC" or the "Company") announces assay results from the first phase of the 2012 exploration program.

The 2012 exploration program, which consists of two phases, commenced in late May and through to the end of July, a total of 9,800m of diamond drilling has been completed in 50 holes.  Phase 1 diamond drilling targeted three areas: the southern end of Pit 3, the northern side of Pit 2 and the western part of the Alabama trend.  Phase 2 of the program will be completed by the end of the year and will consist of approximately 10,000 meters of diamond drilling.

Phase 1 drilling on the south end of Pit 3 was completed to obtain additional geotechnical data, and verify the extent of historical mining in order to assist with pit planning and deeper drilling.  Four holes were drilled along two sections from the western side of the deposit.  Results are listed in the table below.  The first hole, drilled at -60^o to a depth near the bottom of the planned Super pit, intersected the intrusive-volcanic contact, and the mineralization that occurs there, on target, but was lost after a short distance due to intersecting underground workings.  The second drill hole at -47^o was completed to target depth and intersected 80m of mineralization with a 0.4% average copper grade, approximately 100m above the 12P3-01 intersection.  Drill holes P3-03 and 04 were drilled at -47^o and -60^o, respectively, on a section 120m further to the south than the P3-01/02 section. Drill hole 12P3-03 is the shallower hole and intersected 42m of mineralization grading 0.82% copper before entering a dyke-filled fault zone running sub-parallel to the drilling direction.  Drill hole 12P3-04, the deeper hole on this section, intersected 38m grading 2.14% copper.

Southern end of Pit 3: Significant drill intersections

Drilling in the Pit 2 area was carried out, in part, to provide infill data for the block model, allowing the conversion of inferred resources to the measured and indicated categories in order to assist with pit optimization currently being carried out at the mine site; as well as to extend the Pit 2 mineralization to the north; and test mineralization at depth.  Fourteen, relatively shallow drill-holes were completed at -45^o on the south and west side of Pit 2; eleven, shallow to moderate length, drill-holes were completed on the north side; and five, deep drill-holes below the west-central part of Pit 2 were completed from the north side of the pit.  Significant results are listed in the table below, and a plan map showing the drill-hole locations is appended to this release.

Pit 2 area: Significant Intersections

The results from the shallow drilling are generally higher than the inferred model grades and will assist in improving the pit design.  Additionally, the results from the deep drill-holes are similar to the previous deep drilling (2010) and extend the trend of, 'increasing grade and continuity of mineralization with depth', to the west of the previous drilling.

Drilling in and along the Alabama trend was designed to determine if additional drilling in this area could increase both the resource grade and classification.  Mineralization in the Alabama area is generally more disseminated and is lower grade than other areas of Copper Mountain.  Results of this drilling in the Alabama trend are as follows:

Alabama Trend: Significant drill intersections

The mineralized system at Copper Mountain is classified as a bulk-tonnage, alkalic porphyry copper deposit that is hosted within Nicola Group volcanic rocks.  Mineralization is structurally controlled and focused at multi-directional vein intersections and within vein stockwork systems.  Drill holes are usually drilled at angles of -45 or -55 degrees to provide the best indication of the lateral extents of vertically oriented mineralization.

Quality Assurance

The company employs a system of quality control for drill results which includes the use of blanks, certified reference material (standards) and check assaying.  Core is logged on site and split with a diamond saw.   Samples are analyzed for copper at the mine laboratory.  Gold and silver, as well as a large number of duplicate copper assays are determined on pulps by Pioneer Laboratories in Richmond, B.C. The drilling program is supervised by Peter Holbek, M.Sc., P.Geo., a qualified person as defined by National Policy Instrument 43-101.

About Copper Mountain Mining Corporation:

Copper Mountain is a Canadian resource company managed by an experienced team of professionals with a solid track record of exploration and development success.  The Company's shares trade on the Toronto Stock Exchange under the symbol "CUM".  Copper Mountain owns 75% and Mitsubishi Materials Corporation owns 25% of the Copper Mountain Mine.  The 18,000 acre mine site is located 20 km south of the town of Princeton in southern British Columbia.  The Copper Mountain Mine has a current resource of approximately 5 billion pounds of copper and recently commenced production.  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

"Peter Holbek"
Peter Holbek
VP Exploration

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

PDF available at: http://stream1.newswire.ca/media/2012/09/05/20120905_C3787_DOC_EN_17478.pdf