Dr. M. Sam Mannan, executive director of the Mary Kay O’Connor Process Safety Center, passed away on Tuesday, Sept. 11, 2018. Mannan’s work at the MKOPSC has influenced the entire chemical engineering industry in the U.S. and worldwide. Throughout Mannan’s more than 20 years with the center, the MKOPSC has been a driving force in industry’s adoption of more rigorous safety standards.