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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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