Home>Our Company>Leadership Council
Douglas T. DietrichChief Executive Officer
Andrew M. JonesVice President and Managing DirectorEnergy Services
Brett ArgirakisVice President and Managing Director,
Minteq International Inc.
D.J. Monagle, IIIChief Operating Officer, Specialty Minerals Inc. and Minteq Group.
Douglas W. MaygerSenior Vice President and Director, MTI Supply Chain
Gary L. CastagnaSenior Vice President and Managing DirectorPerformance Materials
Jonathan J. HastingsSenior Vice President,
Matthew E. GarthVice President and Managing DirectorEnergy Services
Rand MendezSenior Vice President and Managing Director, Paper PCC
Thomas J. MeekSenior Vice President, General Counsel, Secretary and Chief Compliance Officer Vice President Human Resources
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