Frik Els , Editor

BusinessDay reports on Friday the global platinum surplus may jump eightfold to as much as five tons after Japan’s worst earthquake slashed car production, reducing the country’s demand for the metal used in cars’ emission systems to the lowest level in 28 years. Earlier Mining Weekly reported that world number two platinum producer Impala Platinum has shelved plans to increase production at its underperforming 73%-owned Marula mine leading to lay-offs at the company’s largest development project in South Africa.

Green Century Capital Management filed a shareholder resolution with ExxonMobil to disclose information about its investments in Canadian oil sands, Triple Pundit reported on Thursday. By the end of last year, ExxonMobil’s total proved reserves in the oil sands were over 2.78bn barrels — just over 11% of the company’s total proved reserves, according to a press release by Green Century. Canada’s oil sands which is expected to become the primary source of crude to the US have attracted intense scrutiny in recent days as the US Congress heard submissions about the extension of the Keystone XL pipeline from Alberta to Texas.

The secretive Russian diamond giant Alrosa on Thursday provided a rare glimpse into its finances and operations ahead of a possible public offering. The state-owned company supplies about a quarter of the world’s diamonds and in 2010 produced more of the precious stones than De Beers, historically the dominant miner and marketer of the gems. Alrosa's president Fyodor Andreyev said an internal audit showed its diamond reserves at 1.28bn carats, making the company the world's biggest holder: “At current extraction rates, the company's reserves will last more than 40 years.”

All the money sloshing around in the financial system has to be poured into something. The latest study of mergers and acquisitions in the resource sector show that two of the four biggest deals of 2011 worth over $3bn are financial companies taking over natural resource companies, not strategic investments by other miners. Lower down the scales – deals worth $50m or more – financial investors are also finding ways in. In 2009 only 3.6% of transaction involved investment houses and corporate takeover artists. By the first quarter of 2011 that figure had jumped to 16.1%.

Hot on the heels of a lacklustre listing by Swiss commodities and mining behemoth Glencore, news comes of another multi-billion dollar natural resources IPO going awry. Resourcehouse planned to raise $3.6bn on the Hong Kong market on Thursday but has now postponed the listing to at least the end of the month. The Australian iron ore and coal miner has made three previous attempts to go public in 2009 and 2010.

World number one fertilizer company Potash Corp, received a fillip from S&P on Wednesday after the ratings agency upped the company’s rating to stable from negative and reaffirmed its investment grade corporate credit rating of A-. S&P believes Potash Corp. will benefit from strong fundamentals in the potash business and from the fact that its mines are considered low cost and have long reserve lives. Potash Corp, worth some $46bn on the stock market, has attracted renewed interest from investors on the back of rising global food prices, record earnings at the company, and after a hostile takeover bid was scuppered by the Canadian federal government in November last year.

According to The Globe & Mail, Christophe de Margerie, the CEO of French energy giant Total on a tour of Canada’s oil sands with members of the company’s international advisory board this week, believes the resource is playing an increasingly important role in setting the global price of crude. Through a string of deals, kicked off by the $1.67bn acquisition of Deer Creek in 2005 and topped by the $1.7bn partnership with Suncor announced late last year, Total has become one of the largest oil sands players. The company plans to spend $20bn in the oil sands by 2020, but no further acquisition are planned reports the Calgary Herald.

According to testimony before the US Congress concerning the construction of the $7bn Keystone XL pipeline extension from Alberta to Texas, crude produced by Canada’s oil sands, which represent just over half the country’s total production, has already surpassed the total volume of imports from the US number two supplier Mexico. Since 2000 Canada’s oil sands output has more than doubled: from 600,000 barrels to about 1.5m barrels per day in 2010. Canada supplies 2m barrels per day or 22% of US crude oil imports, up from 15% a decade earlier. The sands’ 175bn barrels of recoverable oil places Canadian oil reserves third in the world behind Saudi Arabia and Venezuela.

Klondike Silver Corp. announced on Tuesday it has arranged for a private placement of up to 4,000,000 units for total proceeds of up to $1,000,000. Proceeds from the private placement will be used for exploration expenditures on the Company’s Yukon, British Columbia and Ontario mineral properties as well as for general working capital. Klondike Silver is a member of the Hughes Exploration Group of Companies.

The Santiago Times reported that Sebastián Pinera, president of Chile, signed a bill which if approved by Congress, would eliminate a substantial source of revenue for Chile’s armed forces and at the same time relieve a massive burden on the country’s state mining company. Under current legislation dating back to the Second World War, 10% of revenues from Chile’s National Copper Corporation, Codelco, are directed to the nation’s armed forces. Codelco is the world’s largest copper mining company and accounts for some 11% of global copper production, but the tax has contributed to years of underinvestment and the prospect of falling output at the miner just as copper prices hit record highs.