Crawford Greenewalt

Crawford Greenewalt was an American chemical engineer, business executive, and pioneering ornithologist who served as the president of the E. I. du Pont de Nemours and Company from 1948 to 1962. His leadership guided the company through a period of significant post-war expansion and diversification into new chemical and polymer markets. Beyond his corporate career, Greenewalt made substantial contributions to the field of ornithology through his innovative use of high-speed photography to study hummingbird flight and physiology, authoring several acclaimed books on the subject. His multifaceted legacy bridges the worlds of industrial research and natural science.

Early life and education

Crawford Hallock Greenewalt was born in Cummington, Massachusetts, and grew up in a family with strong ties to the DuPont company through his mother, a member of the du Pont family. He pursued his higher education at the Massachusetts Institute of Technology, where he earned a Bachelor of Science degree in chemical engineering in 1922. His academic training at the prestigious institute provided a rigorous foundation in the scientific principles that would underpin his future career. Following graduation, he immediately joined the E. I. du Pont de Nemours and Company, beginning a lifelong association with the chemical giant.

Career at DuPont

Greenewalt's rise within DuPont was rapid and distinguished, marked by his involvement in several of the company's most historic and profitable ventures. He played a critical technical role in the design and scaling of the first commercial plant for producing nylon, a revolutionary synthetic polymer developed by Wallace Carothers. His engineering expertise was further demonstrated during the Manhattan Project, where he served as the DuPont liaison and oversaw the design and construction of the massive Hanford Site plutonium production reactors in Washington state. Elected president of DuPont in 1948 and later chairman of the finance committee, he presided over a era of tremendous growth, steering the company's expansion into new areas like polyester fibers and diversifying its product portfolio. His leadership philosophy emphasized long-term research and development, solidifying DuPont's reputation for innovation.

Contributions to ornithology

Parallel to his corporate career, Greenewalt cultivated a deep passion for ornithology, focusing his scientific curiosity on the study of hummingbirds. He pioneered the use of specialized high-speed photography and custom-built electronic flash equipment to capture the intricate mechanics of hummingbird flight, wing movement, and feeding behaviors in unprecedented detail. This work yielded significant insights into avian physiology and aerodynamics, which he documented in authoritative volumes such as Hummingbirds and The Hummingbird. His research was supported by institutions like the American Museum of Natural History and the Academy of Natural Sciences of Drexel University, and he conducted extensive field studies at his estate in Greenville, Delaware, and in locations like Trinidad and Ecuador.

Personal life and legacy

In 1926, Greenewalt married Margaretta Lammot du Pont, a direct descendant of Éleuthère Irénée du Pont, further intertwining his life with the du Pont family and the cultural fabric of Delaware. The couple had three children and were prominent figures in Wilmington society and philanthropy. Greenewalt's legacy is uniquely dual-faceted: he is remembered as a pivotal industrialist who helped shape modern chemical manufacturing and as a dedicated amateur scientist who advanced the field of behavioral ecology. His extensive collections of hummingbird specimens, photographs, and research materials are held by major institutions, including the Smithsonian Institution and the Cornell Lab of Ornithology.

Awards and honors

For his diverse achievements, Greenewalt received numerous accolades from both the scientific and business communities. He was elected a Fellow of the American Academy of Arts and Sciences and a member of the American Philosophical Society. His ornithological work earned him the prestigious Brewster Medal from the American Ornithologists' Union, one of the highest honors in the field. He also received the John Fritz Medal, a top award in the engineering profession, and served on the boards of several major corporations, including the Ford Motor Company and the Chemical Bank.