Engineering & Mining Journal

JUL 2013

Engineering and Mining Journal - Whether the market is copper, gold, nickel, iron ore, lead/zinc, PGM, diamonds or other commodities, E&MJ takes the lead in projecting trends, following development and reporting on the most efficient operating pr

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NEWS-LEADING DEVELOPMENTS all-time high. It was apparent, the PwC report states, that the markets had lost confidence in mining. The top 40 mining companies have recognized this loss of confidence among investors and are taking a variety of actions to win back investors. Some companies have replaced their CEOs, including five of the top 10 companies. Some have increased their dividends. Some have deferred or scaled back capital spending on projects to increase production, and some have increased their project hurdle rates. Many companies have undertaken studies to unlock latent capacity at existing operations, and many major players have announced plans to divest what they consider to be non-core assets. Looking for a light in a tunnel of darkness, the PwC report notes that long-term global demand fundamentals for mined products remain intact. China is continuing to grow and will remain the mining industry's most important customer. Emerging and developing markets will continue to be the world's growth engine. For the near term, investor confidence remains a key issue. PwC's global mining leader, Tim Goldsmith, concludes his executive summary of Mine—A confidence crisis by stating, "Regaining investor confidence depends on how the industry responds to its rising costs, increasingly volatile commodity prices, and other challenges such as resource nationalism. Now is the time to show that the industry can deliver in good times and bad. While currently there may be a confidence crisis, we have faith that the long-term fundamentals will ensure mining is a great industry to be in for many years to come." (The full PwC report is available as a free download at: www.pwc.com/en_GX/ gx/mining/publications/assets/pwc-mine-aconfidence-crisis.pdf.) Lundin Acquiring Eagle Nickel-Copper Project Lundin Mining and Rio Tinto announced a definitive agreement on June 14, where Lundin will purchase Rio Tinto's underground Eagle nickel-copper mine-development project on Michigan's Upper Peninsula. The agreed purchase price is $325 million in cash, consisting of $250 million plus Rio Tinto's project expenditures of approximately $75 million from January 1, until transaction closing. The transaction is expected to close in July. www.e-mj.com Aerial view of Rio Tinto's Eagle underground nickel-copper mine in Michigan, USA. Rio Tinto agreed in mid-June to sell the project to Lundin Mining for $325 million. (Photo courtesy of Rio Tinto) The Eagle mine is located 45 km northwest of Marquette, Michigan, and is served by good infrastructure in a region that has a long history of mining activity. Project construction is slightly more than 50% complete, with initial production expected to begin in the fourth quarter of 2014. Annual production over the first three years of operation is planned at about 23,000 mt/y of nickel and 20,000 mt/y of copper in separate concentrates, plus precious metals and cobalt by-product credits. Life-of-mine production of metal in concentrates over an eight-year mine life is expected to average about 17,000 mt/y each for nickel and copper. Assets being acquired by Lundin include the Eagle mine; the historic Humboldt mill, which is being refurbished to process Eagle ore; and water, access and surface rights around the mine. Mine development is based on estimated JORC-compliant probable ore reserves of 5.18 million mt grading 2.93% nickel and 2.49% copper. Several exploration targets have been identified in close proximity to the mine deposit. Total capital expenditures to develop the Eagle project have been estimated at $770 million, of which approximately $355 million had been spent as of the end of May. Lundin estimates that it will spend an additional $400 million to bring the project into production. The underground Eagle mine is accessed by a ramp, with some 3,000 m of development completed at the end of May. The mine production rate is planned at 2,000 mt/d from long-hole open stopes, with cemented rock backfill. Ore will be transported approximately 105 km by truck from the mine to the Humboldt mill on upgraded existing roads. The 2,000-mt/d mill processing circuit is based on conventional crushing, grinding, and flotation to produce separate nickel and copper concentrates. The concentrates will be transported by existing rail infrastructure from the mill site to final smelter or port destinations. Tailings will be deposited sub-aqueously in the adjacent flooded Humboldt open pit. Power is supplied from the grid already connected to the site. Lundin President and CEO Paul Conibear said, "The Eagle mine represents a very unique opportunity to acquire a high-grade project that is under construction and expected to begin generating significant levels of metal production and cash flow prior to the end of next year. Northern Michigan has an outstanding iron ore, gold and base metals mining history, and consequently excellent regional power, road and rail infrastructure, with extensive mining expertise within local communities to support and staff the Eagle mine." Lundin Mining is headquartered in Toronto, Canada, and has wholly-owned base-metal mining operations in Portugal, Sweden and Spain. The company JULY 2013 • E&MJ; 5

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