Bill Slack (b. 1940, Wilmington, North Carolina) spent his entire career with the DuPont Company after completing his PhD in chemical engineering in 1967 at the University of Delaware. He received offers from four DuPont plants, deciding to work for the company because he admired their business strategies, and accepted a position at the Kinston plant in DRL, ultimately becoming the supervisor. He transferred to Martinsville in 1972, as a part of the business team on fiberfill, which he describes as the highlight of his career. He was promoted to senior supervisor of manufacturing of Tyvek in 1975. He spent 3 years in Germany, leveraging US technology abroad. He worked in industrial Nylon and Teflon at Chestnut Run, eventually becoming the manager. He retired in August 1998 at the Seaford plant.