1948 Crawford H. Greenewalt
Crawford H. Greenewalt graduated from MIT with a degree in chemical engineering in 1922 and began his professional career at DuPont’s Philadelphia plant. Two years later, he was transferred to the Experimental Station to participate in the company’s groundbreaking work in high-pressure technology. Greenewalt’s chemical engineering expertise was complemented by family ties to the du Ponts, most notably his marriage to the daughter of Irénée du Pont.