1980

1980

1980 150 150 admin

1983

Hayden copper smelter modernization
completed.

1985

Corpus Christi zinc smelter and refinery operations suspended indefinitely. Pima copper mine in Arizona acquired.

1986

Ray copper mine and smelter purchased.

1987

Anamax interest in Eisenhower mineral reserves acquired.

1988

Encycle, Inc. started up waste treatment facility at Corpus Christi.

1989

IMASA Group acquired. 49.9% interest acquired in copper mining business of Montana Resources, Inc. ASARCO announces decision to end involvement
in coal mining. ASARCO announces board approval to expand copper facilities at Mission and Ray mines and El Paso smelter.