AHMEDABAD (Commodity Online):Workers at Collahuasi copper mine in Chile stopped working over fears of coming layoffs on Monday. As a result of this, copper concentrate output has been stopped and copper cathode production has been limited. The company has implemented a contingency plan to face the workers action, into which about 10 percent of workers are participating. Collahuasi is world's third largest copper mine and produces around 3 percent of the world's copper production. It had produced 504,000 tonnes of copper in 2010. This supply concerns coupled with favorable economic data from the US acted as a positive factor for the red metal prices yesterday. Copper touched an intra-day high of Rs 389.55 and closed its trading session at the level of Rs 386.80 at MCX on Tuesday. Trend: Base metals are expected to trade lower today as rising worries over the global economy will create demand concerns for metals, thus affecting prices. Additionally, a stronger dollar will also push further downside pressure on metals. To get in touch with the Analyst on this report, please mail to tips@commodityonline.com

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