EXHIBIT 10.6(b)

            Severance Agreements have been executed by the Company and the
indicated employees, each substantially identical in all material respects to
the form of Severance Agreement filed as Exhibit 10.6 to the Company's 2001
Annual Report on Form 10-K except as noted below.

 

 

EMPLOYEE 

POSITION

DATE OF AGREEMENT

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Gordon S. Borteck 

Vice President, Organization 
   and Human Resources

March 15, 2002

  Howard R. Crabtree 

Senior Vice President, Minteq

March 15, 2002

  D. Randy Harrison

Vice President and General Manager, 
   Performance Minerals

March 15, 2002

  Kenneth Massimine

Senior Vice President,  Paper PCC

March 15, 2002

  John A. Sorel 

Senior Vice President, Corporate 
   Development and Finance

March 15, 2002