To understand what Sumitomo was up to, you don't need to know many details about the copper market.

For five years he consequently exercised a remarkable monopoly of the national copper market.

"China, yet again, appears to be the savior of the copper market."

Heavy selling also swamped the coffee, orange juice and copper markets yesterday.

Hamanaka had allegedly attempted to corner the entire world's copper market.

The move is not a reflection of weakening in the copper market, he said.

But the copper market failed to rally on the encouraging news.

But he declined to say whether the commission was looking into specific improprieties in the copper market.

This institutional development helped Chile at least partially free itself from the volatility of the copper market.

The recession fears weighed heavily on the copper market, which is especially sensitive to signs of economic weakness.