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Mark Cluff

President,  Global Operations and Environmental, Health, Safety, Security and Quality

Mark Cluff has over 20 years of experience driving enterprise transformation in operational and environmental, health, and safety (EHS) excellence across global and national manufacturing and energy infrastructure organizations.

As President, Global Operations and Environmental, Health, Safety, Security and Quality (EHSSQ), Mark oversees the company’s manufacturing, engineering, capital execution and EHSSQ functions. Under his leadership, since joining in 2023, Grace has seen significant operational and safety performance results.

Prior to Grace, Mark worked eight years with the Williams Companies, spending over six years as a corporate officer and Vice President, Safety and Operational Excellence. Under Mark’s leadership, Williams saw a significant reduction in process safety incidents and the lowest incident rate in employee injuries and preventable motor vehicle incidents in many years.

Before joining Williams and for 15 years, Mark led roles of progressive responsibility in operations for DuPont in several different businesses and manufacturing locations, culminating his career with the chemical company as Plant Manager for one of their key sites. During his tenure as Plant Manager, Mark led the 350+ person site in achieving world-class safety performance including more than 700 days without an employee recordable.

Mark’s early career experience includes time in project management with ExxonMobil Chemicals and a co-op with the Dow Chemical Company’s Midland, MI and Freeport, TX mega sites.

Mark earned his bachelor’s degree in chemical engineering from Brigham Young University, Provo, Utah, and holds a Six Sigma Black Belt certification. He is an active member of the Manufacturers Alliance and participates in several industry EHS forums.

Mark is active in his community and faith and has served on the Indian Nations Council board for the Boy Scouts of America as well as a diocese leader for The Church of Jesus Christ of Latter-day Saints.