Delays in rollout of autonomous technology forces Rio Tinto to cut iron ore guidance

U.S. number three coal producer and supplier of some 4% of the country’s electricity announced a successful $297.7m bid for an additional tract at its Antelope mine in Wyoming. The new lease would add approximately 350m tons of mineable coal to Antelope, doubling its reserves and adding 12 years of production. The U.S. Bureau of Land Management also recently announced a June 15, 2011 sale date for the West Antelope II South Coal Tract, which contains approximately 56 million mineable tons, according to BLM estimates.

German technology and German know-how are to help the Colombian coalmining sector, underground mining in particular, to become safer and increase its production. A strategic co-operation is planned that is to comprise not only a safety partnership but also technology transfer. Juan Gabriel Ceballos Campuzano is the owner of Colombia’s old-established family mining firm Soc Central de Activos Mineros, based in the Colombian capital of Bogotá.

Mongolia’s SouthGobi Resources said that its fuel supplier claimed a force majeur after Russia cut supplies to the country to a mere 10,000 tonnes. The company said its flagship coal mine, Ovoot Tolgoi, has enough fuel to last 45 days under normal operations or around three months if it scaled back production. SouthGobi also stated that it has coal in inventory and customer trucks can be fuelled in China, a short distance away from the mine.

Taipei Times reports: Brazilian mining giant Vale opened a new US$1.7 billion coal mine in Mozambique yesterday, tapping the southern African country’s thermal and coking coal reserves of about 23 billion tonnes. Vale plans to start production in July and export 1 million tonnes of coal from the US$1.7 billion project this year, ramping up production to 11 million tonnes in a few years — and, local officials hope, boosting Mozambique’s current economic growth of 6.5 percent.

Teck Resources Limited (TSX: TCK.A and TCK.B, NYSE: TCK) announced today that employees at its Fording River operation in southeastern British Columbia have ratified a new five-year agreement, replacing an agreement which expired on April 30, 2011. "Our discussions with the union were very productive and we are pleased to have reached a new five-year collective agreement at our Fording River operation," said Bill Fleming, Vice President, Operations and Engineering.

Cliffs Natural Resources Inc. (NYSE: CLF) (Paris: CLF) today announced it has been added to the Fortune 500 list 2011, Fortune Magazine's annual ranking of America's largest companies by revenue. Cliffs is ranked at No. 477, with annual revenues of $4.7 billion for 2010. "We are pleased to attain this ranking in the prestigious Fortune 500," said Joseph A. Carrabba, Cliffs' chairman, president and chief executive officer. "We consider it another significant milestone in our growth."

China's Zijin Mining Group Co Ltd said on Friday it would invest $100 million as a cornerstone investor in the initial public offering of commodities group Glencore. The investment in the up to $11 billion IPO will be subject to a six-month lock up period, Zijin said in a filing to the Hong Kong bourse.

Coalspur Mines Limited (ASX: CPL, TSX:CPT) is pleased to announce that it has successfully completed its public offering of 24 million ordinary shares of the company at an issue price of C$1.85 per ordinary share for gross proceeds of C$44.4 million. This was announced to the market on April 13, 2011. In addition to the public offering, the previously announced private placement of 6 million ordinary shares at C$1.85 each to raise a further C$11.1 million, before costs , is expected to be completed in June 2011. The private placement is being made to the Highland Park Group, a strategic shareholder of the company.

Fourteen miners in northern Mexico are trapped underground after a gas explosion, BBC News reported Tuesday. According the story, rescuers have been unable to contact the men due to high levels of methane gas in the mine shaft. The accident happened close to the U.S. border at a small artisinal mine in the northern state of Coahuila.