Barrick Gold considers $1B expansion of Pueblo Viejo mine

London copper futures rose for a second day on Wednesday as supply worries brought on by an extended strike at the world's largest copper mine countered concerns over protracted talks in the United States to lift its debt limit. But the thin trading volumes in Asian hours and modest gains suggest investors were far from aggressive in pushing up copper prices, now trading just around 3 percent away from historic highs, given a shaky outlook for global demand. Satellite image of Escondida Mine in Chile

Bloomberg reports BHP workers in Chile voted Sunday to extend their strike at the world’s largest copper mine. Stoppages at BHP’s Australian coal operations may resume this week. Thirty thousand South African coal mine workers including Anglo American and Xstrata employees walked off the job Sunday and may be joined by 160,000 gold industry workers. Strikes that started over the weekend are impacting output from mines of diamond giant De Beers. Workers are seeking a larger slice as global producers report record earnings: Melbourne-based BHP, the world’s biggest mining company, is expected to report full-year profits of $22.5 billion next month, almost double 2010’s net income. Xstrata may report record 2011 profit of $7.3 billion and Anglo American $7.4 billion, estimates show.

Workers at the world's biggest copper mine in northern Chile downed their tools over the weekend as part of an indefinite strike over unmet contract demands. About 2,300 workers of the Escondida mine, under majority control of British-Australian giant

The largest union at Chile's Escondida copper mine has voted to "indefinitely" extend a strike at the mine, which is controlled by BHP Billiton. Members of the 2350-strong Escondida Mine Workers Union No 1 "unanimously voted" to extend the work stoppage, which began on Thursday night and was initially planned to end 24 hours later at 8pm on Friday, union leader Jose Vidal said.

The largest union at Chile's Escondida copper mine voted to "indefinitely" extend a strike at the mine, which is controlled by global diversified miner BHP Billiton Ltd. (BHP, BHP.AU), union leader Jose Vidal said Friday. Members of 2,350-strong Escondida Mine Workers Union No. 1 "unanimously voted" to extend the work stoppage, which began Thursday night and was initially slated to end 24 hours later at 8 p.m. EDT on Friday, Vidal told Dow Jones Newswires.

Chilean President Sebastian Pinera said Thursday the country's copper giant Codelco will remain state-owned in a bid to ease fears that the company will be privatized. Codelco, the world's largest copper-producing company, "belongs to all Chileans," and any attempt to privatize it was to be ruled out, Pinera said.

Workers at BHP Billiton Ltd. (BHP)’s Escondida copper mine, the world’s biggest, began striking as coal miners at the company’s Australian operations prepared to escalate industrial action. The strike by all union members at the northern Chilean mine began at 8 p.m. New York time yesterday with the changing of a shift and will run through to 8 p.m. today, which may lead to about 3,000 metric tons of lost copper production, union leader Jose Vidal said by telephone. Image of BHP's Escondida mine is by BHP Billiton.

Reuters reported that Extorre (CVE:XG) has discovered additional gold and silver deposits at the Cerro Moro mine. Image by Extorre

Latin American precious metal producer Hochschild Mining said output fell 13 percent in the first half, as expected, and that it was on track to meet its full-year target. It produced 11.1 million silver equivalent ounces in the first half due to lower grades at the company's two main Peruvian operations, declining output from its two ageing Ares and Moris mines, and industrial action at its San Jose mine.