Electric vehicles on the road to triple by 2020 — IEA

BHP Billiton played down speculation it was in talks to acquire a cornerstone stake that could be worth $10.3 billion (A$9.8 billion) in Australia's largest oil and gas firm, Woodside Petroleum , from Royal Dutch Shell (RDSa.L: Quote). BHP Billiton, widely rumoured to be considering a takeover of Woodside, said in a short statement that there was no basis for the market talk, which has centred on BHP acquiring Shell's 24.3 percent stake as a step toward a full takeover.

Top global miner BHP Billiton has bought back A$6 billion ($6.3 billion) of its shares, or 4.4 percent of its Australian-listed shares, as part of its $10 billion capital management program. It said on Monday the final price was set at A$40.85 a share, a 14 percent discount to the market price of A$47.4985, based on the average trading price over the five days up to the close of the tender on April 8.

Ivernia Inc said it expects to place its flagship lead mine in western Australia under full care and maintenance for an indefinite period and lay off about 83 percent of related workforce amid environmental concerns surrounding the mine, sending its shares down 23 percent to a nine-year low.

Orocobre Limited (TSX:ORL)(ASX:ORE) is pleased to report that it has produced battery grade lithium carbonate from Salar de Olaroz brines. Orocobre's analysis shows that the lithium carbonate is of greater than 99.9% purity* and of higher purity than the specifications for battery grade material sold by existing producers. This material was produced by refining a lower purity product previously produced at the company's facilities at Olaroz with recirculated brines. As such, the Company considers the material to be representative of what could be expected in commercial production.

The mid-tier gold miner Northern Star Resources (ASX: NST) confirmed today that it had achieved A$11 million (US$11.53 million) in revenue in March from the Paulsens gold mine in the Pilbara region while incurring operating costs of about A$5 million (US$5.24 million). The operation produced 8,583 ounces of gold last month and sold 7,897 oz.

Leading Australian headquartered mining contractor, Ausdrill Ltd, has announced a successful major capital raising to raise gross proceeds of A$129.5 million, to be used as growth capital to fund purchases of plant and equipment for projects commencing in the next 12 months or projects which have been tendered for. This mainly includes projects in Africa and Australia.

Hong Kong-based Regent Pacific Group Ltd said it would consider reinstating debt funding for its original bid for Australian iron ore producer BC Iron Ltd. This move follows a decision by Australia's Takeovers Panel declaring a case of "unacceptable circumstances" for Regent's "purported termination" of its takeover scheme with BC Iron.

The vast majority of Australia's coal mines will not face materially higher costs under a polluter-pays scheme designed to reduce carbon emissions, according to Treasury Department documents released by the government on Friday.

BHP Billiton today announced approval for the Escondida Ore Access project (EOA), the first of a number of development options that will underline Escondida’s status as the world’s premier copper operation. The EOA project will relocate the crushing and conveying facilities currently located inside Escondida’s main pit to improve access to higher grade ore and thereby support higher production from 2013. The project is expected to cost US$554 million (US$319 million BHP Billiton share) and will be completed by mid calendar year 2012.