Dr. Margaret Hutchinson Rousseau was a pioneer in chemical production plant design, performing an impactful role in the fledgling chemical industry which expanded rapidly during World War II. She rose to the challenge of designing production plants for strategic resources needed in the war effort—penicillin, synthetic rubber, and aviation fuel—contributing to the betterment of disease treatment and providing valuable technical expertise during the global conflict. Throughout her career, Dr. Hutchinson designed many types of chemical and petrochemical plants used across a variety of industries. Her specialization in the research and development of fractionation methods resulted in the development of groundbreaking processes and a “ripple tray” patent. Hutchinson was honored by the Society of Women Engineers as the 1955 Achievement Award recipient.