Company announcements Home » Investors » News » Company announcements » Excellent drilling results at Golpu West spells excitement for Harmony’s exploration activities in PNG 2010 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 Excellent drilling results at Golpu West spells excitement for Harmony’s exploration activities in PNGJanuary 26, 2010 Johannesburg. Tuesday, 26 January 2010. Harmony Gold Mining Company Limited (Harmony) is pleased to advise that encouraging results were achieved from recent drilling conducted on the Golpu West prospect, as part of the company’s exploration programme in Papua New Guinea (PNG). Golpu West is located off the western margin of the Golpu orebody and entirely outside of the existing resource limits. Drilling to date has defined approximately 160 metres of strike and the high-grade mineralisation remains open in all directions. Results of the significant new drill intercepts include: WR321: 331m @ 0.51 g/t Au & 0.93 % Cu from 694mIncluding: 155m @ 0.88 g/t Au & 1.51% Cu from 868mWR327A: 478.4m @ 0.85 g/t Au & 1.36 % Cu from 506mIncluding: 155m @ 1.47 g/t Au & 2.29% Cu from 691mWR328: 597m @ 0.57 g/t Au & 0.96 % Cu from 399mIncluding: 198m @ 1.13 g/t Au & 1.88 % Cu from 788m The Wafi-Golpu project area is located in the Morobe Province of PNG and is part of Harmony’s 50/50 Joint Venture with Newcrest Mining Limited of Australia. The high grade portions of copper-gold intercepts are coincident with stockwork veined and altered diorite porphyry. The porphyry is biotite altered, variably silicified and veined, and contains abundant chalcopyrite as fine disseminated sulphide. A halo of lower grade copper-gold mineralisation surrounds porphyry and comprises a stockwork vein network of laminated quartz-magnetite-chalcopyrite veins. Stockwork vein intensity is best developed at the diorite porphyry contact in the adjacent metasediments and gradually decreases away from the contact. The tenor and continuity of the mineralisation is particularly encouraging. The average gold and copper grades of the Golpu West intercepts are significantly higher than the main Golpu porphyry, which for comparison averages 0.65 g/t Au and 1.4% copper. The current Golpu resource is 163 Mt @ 0.6 g/t gold and 1.1% copper for 2.93 Moz of gold and 1.76 million tonnes of copper. The drilling has also intersected near surface supergene copper-gold mineralisation including: WR316: 24m @ 0.6 g/t Au & 0.54% Cu from 82mWR327A: 22m @ 0.55 g/t Au & 0.9% Cu from 175m Harmony’s Chief Executive Officer, Graham Briggs says, “We are thrilled with the outcome of the drilling results at Golpu West. The results are very encouraging and highlight the fact that the Golpu system is poorly constrained at depth. Excellent potential exists for additional mineralised intrusions and/or structural repetitions around the margins.” The way forward and concept studies Drilling to scope out the geometry and full extent of the new mineralised zone is continuing, with three exploration drill rigs. Two additional deep capacity rigs will arrive in mid-February to accelerate the work programme. It is expected that this drilling will significantly expand the current Golpu resource. The 2007 Golpu pre-feasibility study contemplated a block cave operation that would mine 100 million tonnes of ore and produce 1.7 million ounces gold and 1.0Mt copper over a 10 year life of mine. Per the pre-feasibility study the operation would have a low cash cost of approximately US$0.54/lb Cu (or $300/oz Au equivalent) but high capital expenditure of US$1.3 billion and a maximum cash out of US$1.0 billion. It was considered that a resource upgrade or significant change in upfront capital would be the most likely means to increasing the margin and lowering the risk profile for a favourable development decision. The Golpu West drill results outline potential for a step-change impact on the minable resource base. This would provide a key driver to fundamentally alter the economics of the project. In addition to resources, other aspects of the concept study, which may change significantly from previous work include: Reduced upfront infrastructure capital through advances caving technology, and staged development optionsGeo-metallurgical solution for treatment of high sulphidation ore from the Wafi A,B and Link zones The current schedule for completion of the new resource model and progressing of the concept study is June 2010. For more details contact: Marian van der WaltExecutive: Corporate and Investor Relations+27(0)82 888 1242 Esha BrijmohanInvestor Relations Officeron +27(0)82 759 1775 Corporate Office:Randfontein Office ParkPO Box 2RandfonteinSouth Africa 1760T +27 (0)11 411 2000 Sponsor: J.P. Morgan Equities Limited