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1 COPPER MOUNTAIN ANNOUNCES POSITIVE DRILL RESULTS AT NEW INGERBELLE Vancuver, British Clumbia July 23, 2018 Cpper Muntain Mining Crpratin (TSX: CMMC ASX:C6C) (the Cmpany r Cpper Muntain ) is pleased t annunce initial drill results frm Phase 2 f its 3-Phase drilling prgram at the New Ingerbelle prperty nearby the present peratins f Cpper Muntain (See Appendix A fr New Ingerbelle lcatin map). Highlights include: Hle 18IG-06 returning 105 metres f 1.03% CuEq (0.71% Cu, 0.87 g/t Ag, 0.47 g/t Au), which includes: 30 metres f 2.22% CuEq (1.53% Cu, 2.02 g/t Ag, 1.01 g/t Au), and, 48 metres f 0.83% CuEq (0.58% Cu, 0.58 g/t Ag, 0.37 g/t Au) Hle 18IG-03 returning 63 metres f 0.91% CuEq (0.56% Cu, 0.91 g/t Ag, 0.51 g/t Au) and 117 metres f 0.50% CuEq (0.35% Cu, 0.49 g/t Ag, 0.22 g/t Au) Hle 18IG-01 returning 165 metres f 0.63% CuEq (0.44% Cu, 0.60 g/t Ag, 0.29 Au g/t), which includes: 93 metres f 0.81% CuEq (0.55% Cu, 0.74 g/t Ag, 0.38 g/t Au), and, 48 metres f 0.56% CuEq (0.4% Cu, 0.52 g/t Ag, 0.24 g/t Au) Hle 18IG-02 returning 60 metres f 0.70% CuEq (0.47% Cu, 0.98 g/t Ag, 0.33 g/t Au) Hle 18IG-05 returning 48 metres f 0.72% CuEq (0.49% Cu, 1.05 g/t Ag, 0.33 g/t Au), which includes: 21 metres f 1.19% CuEq (0.8% Cu, 1.73 g/t Ag, 0.56 g/t Au) Gil Clausen, Cpper Muntain s President and CEO stated, These early phase 2 drill results are very encuraging, and we believe demnstrate that New Ingerbelle will cntinue t grw in quality and size. We see New Ingerbelle as having transfrmative ptential fr ur peratins in B.C. prviding further grwth pprtunity fr the Cmpany. New Ingerbelle prvides cnsiderable upside as the Cmpany has never reprted any New Ingerbelle Mineral Reserves. Cpper Muntain initiated a 3-Phase drilling prgram at the New Ingerbelle Mine last year with Phase 1. The Phase 1 prgram, which cnsisted f 22 drill hles, was successful in validating and cnfirming histrical data, thus allwing a revised Mineral Resurce estimate using bth histrical and new drill data. The prgram als cnfirmed the significant gld mineralizatin at New Ingerbelle (see February 1, 2018 press release). The bjectives f this Phase 2 drilling prgram are t cntinue t expand the New Ingerbelle resurce area and t cnvert Inferred Mineral Resurces t the Measured and Indicated status. A ttal f 30 hles are planned. Cmplete drill results frm this prgram fllwed by an updated Mineral Resurce estimate is planned in Q

2 The Cmpany s bjective under the 3-phase prgram at New Ingerbelle is t utline sufficient resurces t frm the basis f a Feasibility Study n the develpment ptential f this histric prducing mine. The Cmpany s target is t add a minimum f 150 millin tnnes f Measured and Indicated resurce t cmmence that study. Significant intercepts frm the seven cmpleted drill hles t date, are summarized in the table belw. A drill hle lcatin map fr the Phase 2 prgram and assciated crss sectins can be fund in Appendix B, while a detailed listing f drill hles being reprted can be fund in Appendix C. Hle ID Azi Dip Length Frm (m) T (m) Interval (m) Cu% Ag g/t Au g/t Cu Eq%* 18IG Incl Incl IG IG IG IG Incl IG Incl Incl

3 18IG *CuEq%: Calculated using US$2.75/lb Cu, US$1,250/z Au, and US$16/z Ag, at 100% recveries. Cmpetent Persns Statement The infrmatin in this reprt that relates t Explratin Targets, Explratin Results, Mineral Resurces r Ore Reserves is based n infrmatin cmpiled by Peter Hlbek, B.SC (Hns), M.Sc. P. Ge. Mr. Hlbek is a full time emplyee f the Cmpany and has sufficient experience which is relevant t the style f mineralizatin and type f depsit under cnsideratin and t the activity being undertaken t qualify as a Cmpetent Persn as defined in the 2012 Editin f the Australasian Cde fr Reprting f Explratin Results, Mineral Resurces and Ore Reserves. Mr. Hlbek des cnsent t the inclusin in this news release f the matters based n their infrmatin in the frm and cntext in which it appears. Peter Hlbek is a Qualified Persn as defined by Natinal Instrument and has reviewed and apprved the technical cntent f this release. Abut Cpper Muntain Mining Crpratin: Cpper Muntain s flagship asset is the Cpper Muntain mine, lcated in suthern British Clumbia near the twn f Princetn. The Cmpany has a strategic alliance with Mitsubishi Materials Crpratin wh wns 25% f the mine. The Cpper Muntain mine has a large resurce f cpper that remains pen laterally and at depth. This significant explratin ptential is being explred t maximize the prperty s full develpment ptential. Cpper Muntain s Clncurry prject in Queensland, Australia, includes the develpment-ready Eva Cpper Prject and an extensive explratin ptential within the Cmpany s 379,000 hectare highly prspective land package within the Munt Isa area. Additinal infrmatin is available n the Cmpany s web page at On behalf f the Bard f COPPER MOUNTAIN MINING CORPORATION Gil Clausen Gil Clausen, P.Eng. Chief Executive Officer

4 Fr further infrmatin, please cntact: Letitia Wng, Vice President Crprate Develpment & Investr Relatins r Dan Gibbns, Investr Relatins ext Website: www. Nte: This release cntains frward-lking statements that invlve risks and uncertainties. These statements may differ materially frm actual future events r results. Readers are referred t the dcuments, filed by the Cmpany n SEDAR at specifically the mst recent reprts which identify imprtant risk factrs that culd cause actual results t differ frm thse cntained in the frward-lking statements. The Cmpany undertakes n bligatin t review r cnfirm analysts expectatins r estimates r t release publicly any revisins t any frward-lking statement.

5 APPENDIX A: NEW INGERBELLE LOCATION

6 APPENDIX B: PHASE 2 DRILL HOLE MAP

7 APPENDIX B: CROSS SECTIONS CROSS SECTION A CROSS SECTION B

8 APPENDIX C: 2018 New Ingerbelle Drill Hles HOLE-ID Easting* Nrthing* Elevatin Azimuth Dip Length 18IG IG IG IG IG IG IG *UTM NAD 83 Zne 10 Diamnd drilling, which runs 24/7, uses NQ2 diameter rds and bits and drill cre is placed in wden bxes which are delivered t the cre lgging area at the end f every shift. Drill-hle cllars are surveyed with differential GPS and dwn-hle surveys using a Reflex instrument are taken apprximately every 30-80m depending n grund cnditins and hle length. The cre is lgged, and sample tags a stapled int the bxes where samples are t be taken and the cre is phtgraphed. Cre recvery is always at, r near, 100% except fr fault znes. All assay samples are 3m in length. Cre is split with a diamnd saw, and samples are transprted t the mine s analytical labratry by members f the explratin team. Samples are srted, weighed, dried and crushed prir t pulverizing t 75% passing -200mesh. Cu and Ag are analyzed by XRF and samples with >0.4% Cu are re-analyzed by Atmic Absrptin. Sample pulps fr all samples >0.1% Cu are delivered t a cmmercial lab fr Au analysis by either fire assay r Aqua Regia digestin fllwed by AA analysis. Additinally, every tenth sample is analyzed by ICP-AES fr a 35 element suite, which includes Cu and Ag prviding checks n the mine-site labratry, in additin t rutine insertin f standards and blanks. All pulps and carse-reject material are retained. Intercept grades are length-weighted averages using uncut grades. Fr additinal infrmatin n prject land hldings, histry, prductin data, gelgy and mineralizatin, the reader is directed t Canadian NI: reprts which a filed under the cmpany name n the SEDAR website.