The company's action reflects a relatively tight supply in the markets for steel products.

Copper prices continued to plunge despite a tight global supply.

That will almost certainly lead to tighter supplies over the winter and somewhat higher prices.

As a result of tight supplies, heating oil prices have jumped 70 percent over the last year.

Gasoline is in tighter supply than crude oil for two reasons.

Money had almost always been in tight supply with the persons being honored.

For months, high demand and tight supplies have pushed the price of oil upward.

Next, during the housing boom, "there was such tight supply that people would buy anything," he said.

The hurricane season is again rocking global oil markets at a time of tight supplies.

But he said that tight supplies, China's growing appetite for oil and other considerations were more important.