It is the second largest copper producer in Russia.

In the early 1980's, copper producers' costs were at an all-time high.

It is considered among the top copper producers in the world and by many as the most efficient.

Stock prices of other big copper producers were mixed yesterday.

It seemed fairly evident that the fortunes of the nation's largest copper producer had, indeed, turned around.

Arizona has been a major copper producer since the 19th century.

Shortly before and after, but not during, the revolutionary war, the mine was a major copper producer.

The mine was derelict now, but in my father's day it had been a great copper producer.

The agreement makes it more likely that the other copper producers will reach accords with their unions, he said.

This made it the largest copper producer in Europe.