Board of Directors

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J. Rich Alexander
Chairman
Allnex Corporation
Randall S. Dearth
Chairman, President and Chief Executive Officer
Calgon Carbon Corporation
William J. Lyons
Retired Executive Vice President and Chief Financial Officer
CONSOL Energy Inc.
Louis  S.  Massimo
Retired Executive Vice President and Chief Operating Officer
Arch Chemicals, Inc.
William  R. Newlin
Chairman, Newlin Investment Company LLC
John J.  Paro
Chairman, President, and Chief Executive Officer
HallStar Company
Julie  S. Roberts
President
JSRoberts Consulting, LLC
Timothy G. Rupert
Retired President and Chief Executive Officer
RTI International Metals, Inc.
Lead Director, Calgon Carbon Corporation
Donald  C. Templin
Executive Vice President
Marathon Petroleum Corporation