That improved macroeconomic confidence drove inflows into industrial metal ETPs, led by demand for copper, he said.
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Commerzbank analysts said copper struggled to gain on the recent positive Chinese economic data over into the new week of trading.
FORBES: FOCUS: Speculators Start Buying Precious Metals Futures, Options Again -CFTC
Several analysts said copper could fall some more in the next couple of months due to this uncertain backdrop, and also because of slower seasonal demand during the vacation season and maintenance shutdowns in the Northern Hemisphere.
FORBES: Copper Expected To Languish Over Summer But Pick Up Into Year-End
Scientists used the microscope to control a tiny, super-sharp needle along a copper surface, IBM said.
The decline was due to higher gold and copper costs and lower realized copper prices, Barrick said.
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Chinese officials just said that copper prices are about 20% higher than justified.
The Madras High Court said the copper smelting plant had been "letting out effluents into air and water which is having a devastating impact".
It is also working to secure the necessary financing, considering alternatives such as a joint venture or sale of its copper projects, McEwen said.
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He said the copper alloy fragments could be linked to a metal disc found with the original hoard by metal detectorist, Terry Herbert, in July 2009.
That secondary rock has become exhausted and the production of copper was falling, he said.
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Barclays Capital said given that copper saw significant price-gains in January, the market could be ripe for selling.
The recent trend of rising auto sales will continue and that bodes well for copper and aluminum, she said.
Both said they see copper having leadership qualities next year.
Newmont reported a year-on-year decline in gold and copper production, although the company said it is on track to meet its targets for 2011.
The force said recent price rises of copper and aluminium were thought to be behind the spate of incidents.
BBC: NEWS | UK | England | Southern Counties | Price rises 'behind metal thefts'
PanAust surged 5.4% after the company said its first-quarter copper output was higher.
"The law was put on the books back in the '70s when we were using the copper-wire telephone, " he said.
Kent Police said the theft of the copper cable was down to its "current high value and attractiveness to thieves".
BBC: NEWS | UK | England | Southern Counties | Price rises 'behind metal thefts'
But Chief Executive Richard Adkerson of Freeport said the move would pay dividends for his shareholders, while Phelps said the combined company s copper production would grow 25% over the next three years.
The company attributed the lower production to lower grades of copper and lower recovery rates, which Yamana said they expected.
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Some residents even said their hair turned green from copper residues.
The sharp gains seen in net-long positioning in copper was reflected in the rise in prices, said Commerzbank.
FORBES: Speculators Buy Up Precious, Base Metals Futures, Options -- CFTC
She said when that announcement came out, copper prices rose sharply, which underscores the importance the Asian nation has to the red metal.
Further, several analysts said the long-term direction of copper and other base metals will hinge more on the economies and demand from major consuming nations.
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That said, my own guess is that copper and oil, both in high demand for building and running the Chinese economy are safer bets to commit money.
Citi said while the net short position in copper is not as high as it was in February 2009 when it reached more than 22, 000 short contracts in the disaggregated report, copper remains in an oversold condition.
FORBES: FOCUS: Speculators Cut Bullish Exposure To Gold Again --CFTC Data
Andre Sougarret, mines manager for state-run copper company Codelco and on-site rescue coordinator, said that operation was stopped Tuesday while the drill head was changed.
Putting tin directly onto the copper piece would reduce the manufacturing steps and costs, Norton said.
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Its union with Freeport, it said, would benefit from strong global demand for copper, alongside a scarcity of large-scale copper development projects.
Det Supt Paul Northcott from Devon and Cornwall Police said until last year, thefts of lead, copper and other metals had been rising steadily.
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