Management Team

Douglas T. Dietrich
Chairman and Chief Executive Officer​

 

D.J. Monagle, III
Group President, 
Specialty Minerals and 
Refractories

 

Erik C. Aldag
Senior Vice President,
Finance and Treasury,
and Chief Financial Officer

 

Jonathan J. Hastings
Group President, 
Performance Materials

 

Timothy J. Jordan
Vice President, General Counsel, Secretary, Chief Compliance Officer

 

Erin N. Cutler
Vice President, Human Resources

Douglas W. Mayger
Senior Vice President ​and Head of Global Operations, Performance Materials

 

Brett Argirakis
Senior Vice President and Managing Director, 
Minteq International Inc. and MTI Global Supply Chain