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Leadership
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IMA-NA Board of Directors
 
Chairman of the Board of Directors
David S. Brown 
President and Chief Executive Officer 
Wyo-Ben, Inc.
 
Vice Chairman of the Board of Directors
Edward Flynn 
General Manager
FMC Corporation
 
Secretary/Treasurer
Position Open
 
Associate Members Section
 
Section Chairman
Adele L. Abrams 
President
Law Office of Adele Abrams, PC
 
Section Vice Chairman
Peter Causer 
Vice President, National Accounts
Volvo Construction Equipment North America, Inc.
 
Ball Clay Section
 
Section Chairman
Walter Krueger 
Ball Clay Relations Manager
Imerys Ceramics
 
Section Vice Chairman
Daniel J. Collins 
General Manager
H.C. Spinks Clay Co., Inc.
 
Bentonite/Barite Section
 
Section Chairman
Don Eisenhour 
Manager, Minerals Development
American Colloid Company
 
Section Vice Chairman
Steve Gray 
Mineral Resource Development
Halliburton
 
Borates Section
 
Section Chairman
Stephen Cole
President and Chief Executive Officer
Searles Valley Minerals
 
Section Vice Chairman
Chris J. Robison
Vice President, Operations - Americas
Rio Tinto Minerals
 
Calcium Carbonate Section
 
Section Chairman
Mr. Bruce Routhieaux 
Carmeuse Lime & Stone 
Vice President - Sales & Marketing  
 
Section Vice Chairman 
Paul Malsch 
Director of Environmental and External Affairs - Americas
Omya Inc.
 
Diatomite Section
 
Section Chairman
Robert Rees 
Director, World Minerals Inc.
International Diatomite Producers Association
 
Section Vice Chairman 
Dave Keselica 
President 
EP Minerals, LLC
 
Feldspar Section
 
Section Chairman
Kevin F. Crawford 
President and Chief Executive Officer 
Unimin Corporation
 
Section Vice Chairman 
John A. Ulizio 
Consultant
U.S. Silica Company
 
Industrial Sand Section
 
Section Chairman
Wade R. Sjogren 
President
WHIBCO, Inc.
 
Section Vice Chairman 
Timothy J. Wuest 
President
Badger Mining Corporation
 
Kaolin Section
 
Section Chairman
Dennis C. Parker 
President and Chief Executive Officer
Active Minerals International, LLC
 
Section Vice Chairman
Open
 
Soda Ash Section
 
Section Chairman
Christopher B. Douville 
Vice President and General Manager
Tata Chemicals North America Inc.
 
Section Vice Chairman
Kirk Milling 
President and Chief Executive Officer
OCI Chemical Corporation

Talc Section
Section Chairman
Mr. Shripal Sharma 
Global Director – Product Stewardship
Imerys Performance & Filtration Minerals
 
Section Vice Chairman
Sal LaRosa 
Technical Marketing Manager
NYCO Minerals, Inc.
 
Immediate Past Chairman of the Board of Directors
Kevin Porterfield 
General Manager – Talc 
Specialty Minerals Inc.
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