
Montana Sulphur & Chemical Co.Montana, United States

Kunimine Industries Co., Ltd.

Mineral Technologies Pty Ltd.Queensland, Australia

Luossavaara-Kiirunavaara ABSweden

Zhejiang Changan Renheng Technology Co., Ltd.Zhejiang, China

Süd-Chemie AGBasel-Landschaft, Switzerland

Minerals Technologies, Inc.New York, United States

Wyo-Ben, Inc.Montana, United States

Harcros Chemicals, Inc.

American Colloid Co.

AquaBlok Ltd.Ohio, United States

J. C. Steele & Sons, Inc.North Carolina, United States