Duke has over 20 years experience with engineering companies involved with the refining and gas processing industries. The focus of this experience was design engineering associated with sulfur recovery/tail gas treating units and included sour water treating and amine treating units.

His many years experience includes developing and managing both in-plant and open forum training seminars for the industry in the US and internationally.

He was also instrumental in establishing the Amine Best Practices Group (ABPG), is an active participant in the ABPG Data Exchange Network (DEN)  and is one of the founders of BSDT Seminars.