Staff Leadership

John Catterall

Vice President, Automotive Program


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JOHN CATTERALL is the vice president, automotive program, for the American Iron and Steel Institute, where he is responsible for leadership of the Automotive Applications Council, a group of member steel producers, in automotive research, education and technology transfer activities. He also coordinates the steel member company collaborations with the Auto/Steel Partnership a partnership between AISI members, automaker representatives from FCA US LLC, Ford Motor Company and General Motors Company and other steel-related consortia.

Catterall’s career has spanned nearly four decades in automotive engineering. Prior to joining AISI, Catterall was the executive director of the Auto/Steel Partnership. He held the position of global innovation manager for body systems at General Motors for more than 16 years, where he led the GM global innovation team in developing solutions for all body systems.

Before joining GM, his career experience was in project execution, management, coordination and technical leadership with companies such as Autokinetics, Inc., Desktop Engineering International Inc., Hartwick Professionals Inc., Lexel Engineering, H.W. Structures, Austin Rover and Leyland Vehicles (the latter three are in the United Kingdom).

Mr. Catterall holds degrees in Mechanical and Production Automotive Engineering from Bolton Technical College and Leyland Technical College in England, UK.

Mark Thimons

Mark Thimons

Vice President, Sustainability,


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MARK THIMONS is responsible for overseeing the Sustainability program, including the design and completion of research projects that demonstrate the life cycle advantages of steel in all markets. Important focus areas include life cycle assessment (LCA) studies, national recycling programs and initiatives, educational programs on steel recycling and sustainability topics, as well as credible documentation and effective communication of the overall environmental, social, and economic sustainability attributes of steel produced in America.

Thimons was previously Director, Construction Sustainability. In this role, he was responsible for defining and implementing a coordinated industry sustainability program, which included outreach to steel mill experts and customer associations, as well as management of the activities of the AISI Construction Sustainability Council and the Cool Metal Roofing Coalition.

He holds a Bachelor of Science in Civil Engineering from the University of Notre Dame and a Master of Business Administration from the University of Pittsburgh. He is a registered professional engineer in Pennsylvania and a LEED accredited professional in the specialty of building design and construction.

Robert Wills

Robert J. Wills, P.E.

Vice President, Construction Program


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ROBERT J. WILLS, P.E. is responsible for overseeing the Construction Market programs in commercial buildings, residential construction, and the transportation/infrastructure markets, as well as the AISI Construction Technical Program. He works directly with senior leadership in the Construction Market program and with customer/partner associations and alliances such as the Steel Framing Alliance, Metal Roofing Alliance, The Metal Initiative, the National Steel Bridge Alliance, and the Construction Sustainability Task Group.

Prior, Mr. Wills became Vice President of Construction Market Development in 2008 following 18 years of service with the AISI Code and Standards program. His responsibilities in the codes and standards program encompassed design specifications, test methods, product specifications and installation standards related to steel in construction. He is widely recognized for his expertise in fire safety engineering, structural fire testing and performance, wind engineering, and geotechnical and foundation engineering. He was very involved in the development of the International Building Code and the NFPA 5000 Building Construction and Safety Code.

He is a member of ASTM International, the American Society of Civil Engineers (ASCE), the National Fire Protection Association (NFPA), the International Code Council (ICC), the International Organization for Standardization (ISO) and the Building Seismic Safety Council (BSSC).

Wills began his professional career as a structural design engineer for Rust International. He was later employed by the Southern Building Code Congress International as a senior engineer with responsibilities in plan review, code interpretation and education. He left that position in 1990 to join AISI as director of construction codes and standards.

Wills earned a Bachelor of Science degree in Civil Engineering from Mississippi State University, with special emphasis in structural and foundation engineering. He is a registered Professional Engineer in the State of Alabama.