Mr. Graff has been a director since May 2013. Mr. Graff is Chairman and Chief Executive Officer of American Air Liquide Holdings, Inc. and a Senior Vice President of the Air Liquide Group with responsibility for the Americas, Safety and Industrial Systems Worldwide and is Chairman of the Electronics World Business Line. Mr. Graff joined Air Liquide as President and CEO of Air Liquide USA LLC in April 2007. In January 2009 he took on additional responsibilities and was named President and CEO of American Air Liquide Holdings, Inc. In May 2009, Mr. Graff was named a Corporate Vice President of Air Liquide S.A. and member of the Executive Committee of the Air Liquide Group with responsibilities for North America and Safety and Industrial Systems Worldwide. In January 2010 Mr. Graff’s responsibilities were expanded to include responsibility for all of Air Liquide’s operations in the Western hemisphere (Americas). In April 2012, Mr. Graff’s responsibilities were expanded to include oversight of Air Liquide’s electronic business worldwide and he was named Chairman of the Electronics World Business Line. In January 2013 Mr. Graff was named a Senior Vice Present of the Air Liquide Group and in April 2013 he was named Chairman of American Air Liquide Holdings, Inc. Prior to joining Air Liquide, Mr. Graff began his career with Amoco Corporation and then worked for BP plc, where he last served as President and Chief Executive Officer of BP Polymers Americas from 2001 to 2004. Mr. Graff served as a director of The Lubrizol Corporation from 2009 until it was acquired by Berkshire Hathaway Inc. in 2011. Mr. Graff serves on the Board of the American Chemistry Council and on the Executive Committee of the Society for Chemical Industries. Mr. Graff serves on the Board and Executive Committee of Children at Risk. He is also a member of the Greater Houston Partnership and a member of the Energy Forum of the Baker Institute at Rice University. Mr. Graff holds a M.S. in Chemical Engineering from Purdue University, a B.S. in Chemical Engineering from the Illinois Institute of Technology, has studied business at the University of Chicago and has completed executive management programs at the Wharton School of the University of Pennsylvania, the University of Cambridge and the Stanford University Law School.