• Compass Minerals International
Inc
• Shandong Baomo Biochemical Co. Ltd.
• ICL Group Ltd. (Israel Corp.)
• Intrepid Potash Inc.
• Merck KGaA
• Cargill
Incorporated
• Nedmag B.V.
• K+S Aktiengesellschaft
• Celtic Chemicals Ltd.
• Deusa International GmbH