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Msg  17883 of 21589  at  4/26/2012 10:02:23 AM  by

1oldduffer


Newmont lured by giant kimberlite field in Saskatchewan... blast from the past

A major gamble


By: Virginia Heffernan
2010-12-02
 

There's something about the allure of diamonds that tempts even the most conservative of mining companies. Since the unexpected discovery of the rich Ekati deposits in the Northwest Territories 20 years ago, majors from around the world have poured billions of dollars into Canadian diamond exploration and mining.

But the siren call can just as often lead to a money pit as it does to a profitable mine.

Australia's BHP Billiton (BHP-N, BLT-L), then BHP Minerals, set the bar high in the early 1990s with the decision to back prospector Chuck Fipke in his pursuit of diamonds in the Northwest Territories. The gamble surprised analysts because an economic diamond deposit had never been found in Canada despite years of searching by diamond powerhouse De Beers. It was the late geologist Hugo Dummett, with his previous diamond experience, who managed to convince his employer BHP to take a chance on Fipke.

The end result of Fipke's exploration work, the Ekati mine, produces 5% of the world rough diamond supply by value and earns hundreds of millions of dollars in revenue annually. BHP Billiton owns an 80% interest in the cash machine, which opened in 1998 and produces about 3 million carats per year. Fipke and his former partner Stu Blusson own the remaining 20%.

The nearby Diavik mine, owned 60% by Diavik Diamond Mines  a division of Rio Tinto (RTP-N, RTP-L) - and 40% by Harry Winston Diamond (HW-T, HWD-N) is another enviable success story. Production surpassed 50 million carats in 2008, five years after the mine opened. Diavik is currently making the transition from an open pit to an underground operation under improving market conditions for rough diamonds.

So it's little wonder miners of all stripes have lined up to get a piece of the lucrative Canadian diamond sector. Over the past few years, Teck Resources (TCK.B-T, TCK-N), Newmont Mining (NMC-T, NEM-N) and Kinross Gold (K-T, KGC-N) have invested hundreds of millions of dollars collectively. But the alluring stones have proven to be fickle friends.

"When Ekati and Diavik were discovered, it was perceived that Canada could be the source of 50% of the world's diamonds in the future because of its geology and the huge Archean craton where there are kimberlite pipes in the thousands," says Pierre LeBlanc, principal of Canadian Diamond Consultants and former vice-president of corporate affairs for Diavik. "But with the exception of the big discoveries (including De Beers' Victor mine), most of the pipes that have been found have not been sufficiently diamondiferous to be economic."

Teck pays a hefty tuition fee

You don't have to tell that to Teck. Four years ago, Teck (then Teck Cominco) spent $30 million to buy a 16% stake in Tahera Diamond, a junior company that had ambitions to become the leading Canadian-owned diamond company through its 100% interest in the Jericho mine in Nunavut.

"Our investment in Tahera is consistent with our goal of further diversifying our portfolio especially into non-exchange traded commodities," Teck president and CEO Don Lindsay said at the time. "As we continue to actively explore for diamonds, we view this alliance with Tahera and its existing partners as an attractive opportunity to expand our knowledge of all phases of the diamond business from mining through marketing, while helping to add value to the Jericho project."

Jericho turned out to be expensive tuition for Teck. The tiny mine, already having trouble meeting its production targets, ran into a perfect storm of insurmountable problems, including a premature closure of the winter road used to ferry supplies, lower than modelled grade, technical difficulties with the crusher that reduced output and currency fluctuations that finally killed the project.

Teck quickly backpedalled, choosing not to participate in a rights offering in December 2007 that was intended to rescue the mine and, later, writing down $22 million of its investment in Tahera. Tahera went bankrupt and Jericho was placed on care and maintenance in 2008.

"Teck had ambitions to move into the diamond sector on a broader scale," says John Kaiser, who produces the Kaiser Bottom-Fish Online newsletter and has been closely following the Canadian diamond sector for several years. "But getting involved in Jericho didn't make a lot of sense because it was never going to have a long life or generate a lot of cash flow."

Since the Tahera experience, Teck has lost its lust for diamonds and moved onto much larger-scale investments in coal and oilsands. Jericho, meanwhile, may get a second chance to produce from Edmonton-based Shear Minerals (SRM-V), which has agreed to pay $2 million cash and 80 million shares for the mine.

Newmont lured by giant kimberlite field in Saskatchewan

Similar ambitions to Teck's - combined with then president Pierre Lassonde's self-professed love of the diamond business - drove gold giant Newmont Mining to invest $50 million for a 10% equity stake in Saskatchewan explorer Shore Gold (SGF-T) in 2005, and another $170 million for a 40% stake in the junior's Fort à la Corne (FALC) diamond property a year later.

Newmont had made a killing selling its equity stake in Aber Resources (now Harry Winston Diamond), part owner of the Diavik mine, and was hoping to repeat that success not only as a passive investor, but as a hands-on strategic partner. The thinking was that Newmont could contribute its technical expertise for operating open-pit, disseminated deposits to develop the kimberlites of the FALC project into a profitable moneymaker.

"In those days, Shore Gold was claiming, rightly so, that they were sitting on the largest kimberlite field in the world, with literally billions of tonnes of kimberlite material," LeBlanc says. "So there was a high expectation that this was going to be a huge, very profitable operation and that Newmont could bring its mining expertise to the table."

But four years later, the project is still in the advanced exploration stage and Shore Gold's stock has dropped from a high of $8.75 per share in March 2007 to less than $1 today. Newmont's $50-million equity stake is worth less than $7 million.

Newmont stopped putting money into the joint project at the start of the downturn in 2008, after the partners spent $87 million on exploration, including shaft-sinking on the Orion South kimberlite. The company has had little to say about the partnership since: it directs all enquiries about the project to Shore Gold and declined to comment for this story.

Meanwhile, Shore has forged ahead on its own, spending $8 million on its 100%-owned Star property nearby in 2008 and another $18 million on both projects in 2009, culminating in a positive prefeasibility study for combined open-pit mining of the Star and Orion South kimberlites.

The study is based on reserves of 279 million tonnes with an average grade of 12.5 carats per hundred tonnes, equal to 35 million carats and an average price of $226 per carat.  Assuming a mine life of 20 years, the net present value of the project is estimated at $1.3 billion (using a 7% discount rate), while the internal rate of return would be 16% before taxes and royalties. Total capital costs are estimated at $2.5 billion.

By comparison, the Diavik feasibility study completed a decade ago was based on minable reserves of 25.6 million tonnes averaging 4 carats per tonne, equal to 101.5 million carats and an average price of $63 per carat. Predicted life-of-mine capital costs were $2 billion.

Some investors commenting on web boards such as Investor Village have lost faith in Shore Gold because the company has deferred a production decision so many times over the years while the stock becomes increasingly diluted by financings. But while Kaiser says the Saskatchewan pipes are geologically complex, resulting in inconsistent grades and difficult mine planning, he believes the Shore Gold kimberlites will be developed eventually despite the high price tag.

"In the long run, the world supply of natural diamonds is depleting," Kaiser says. "Unlike gold, all of the diamonds that are produced, cut, polished and sold aren't sitting in vaults waiting to come back into the market at the right price. Deposits like this that can be developed on a large scale over a long mine life will eventually be dragged into economic feasibility by higher prices."

There are signs that higher prices are already here. After Shore Gold announced its prefeasibility, a revaluation of the diamond parcels from the Star and Orion South kimberlites indicated parcel price increases of between 11% and 19% above the prices that were used in the study.

Meanwhile, BHP Billiton earned US$901 million in diamond revenues for the fiscal year ended June 30, a 72% increase from 2009, despite producing slightly fewer diamonds at Ekati. And sales by De Beers' marketing arm, the Diamond Trading Co. (DTC) almost doubled to US$2.6 billion in the first half of 2010 from US$1.4 billion for the same period last year. The company attributes the increase to higher demand from retail markets and restocking by the trade.

"Further demand growth is dependent on increases in consumer demand, and De Beers remains encouraged by the strength of demand in the emerging markets of Asia, particularly China and India," the company said in a press release announcing the results.

Quick flip the best way to play diamonds?

Kinross Gold came at diamond investment from a different and ultimately more lucrative angle than Teck and Newmont. The Toronto-based gold producer saw a distressed asset in Harry Winston and decided to pounce. In March 2009, Kinross paid $104.4 million for a 22.5% interest in Harry Winston's portion of the Diavik operation in the Northwest Territories and $45.6 million, or $3 a share, for a 19.9% stake in the junior.

"We are acting on a rare opportunity to acquire a stake in one of the world's great diamond mines, operating in northern Canada, with a long mine life and a record of strong cash flows," said Kinross president and CEO Tye Burt. "For Kinross, this represents a strategic investment that is accretive and has the potential to create excellent long-term value for our investors."

But the investment turned out not to be so long term. After nearly tripling its money within 16 months, Kinross sold its stake in Diavik back to Harry Winston for US$220 million and the 19.9% interest in Harry Winston to a group of financial institutions for C$13.10 per share.

Kinross says the $400-million windfall will help pay for exploration rights and other gold deals in Russia. And there are bigger fish to fry. The company completed a US$7.1-million takeover of gold producer Red Back Mining in September.

The overwhelming successes of Canada's early diamond finds, Ekati and Diavik, set up unrealistic expectations that other diamondiferous kimberlites in the country would be equally lucrative. But challenging working conditions, uncertain grades, economic downturns and currency fluctuations have rendered many of these deposits marginal or uneconomic.

Teck, Newmont and even experienced diamond miner De Beers, which took a $965-million writedown of its Canadian assets in 2008, have all felt the sting of unfulfilled diamond ambitions. It remains to be seen if rising rough diamond prices can transform these marginal producers, former producers and potential producers - including Stornoway Diamond (SWY-T) and Soquem's Renard in Quebec; Mountain Province Diamonds (MPV-T) and De Beers' Gahcho Kué in the Northwest Territories; and Peregrine Diamonds and BHP Billiton's Chidliak in Nunavut - into investments worthy of their predecessors.

- The author is a freelance writer specializing in mining issues, and principal of Toronto-based GeoPen Communications (www.geopen.com).





 
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17885 Re: Newmont lured by giant kimberlite field in Saskatchewan... blast from the past 1oldduffer 2 4/26/2012 11:20:50 AM


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