1988
Birla Carbon starts operations in India through Hi-Tech Carbon, Renukoot.

1986
Phelps Dodge acquires Columbian Chemicals Co.

1984
Von Hoffman purchases Columbian Chemicals Co.

1983
Consolidated Mining acquires Columbian Chemicals Co. from Occidental.

1980
Aditya Birla Group enters carbon black business with Thai Carbon Black Public Co. Ltd., beginning its operations in Angthong, Thailand.