Zay Jeffries

Zay Jeffries (April 22, 1888 – May 21, 1965) was an American mining engineer, metallurgist, consulting engineer, recipient of the inaugural ASME Thurston Lecture Award, and recipient of the 1946 John Fritz Medal.

Biography Jeffries was born in Willow Lake, South Dakota as one of the nine children of Johnston Jeffries and Florence (Sutton) Jeffries. He obtained his BSc in mining engineering at the South Dakota School of Mines and Technology in 1910. Three years later, he also obtained his MSc in metallurgical engineering from the same school, and in 1918 Harvard University awarded him his Doctor of Science degree.

Jeffries was elected a member of the National Academy of Sciences in 1939. In 1946, he was awarded the John Fritz Medal. He was elected to the American Philosophical Society in 1948.

In 1950, Jeffries became the Leonard Case Professor on Educational Policy at Case Western.

Jeffries was also a vice president of General Electric: as such, he and other officers were prosecuted in 1948 for violating federal law; that same year, he also received the Medal for Merit. In his later years, Jeffries retired to Pittsfield, Massachusetts, where he died of cancer in May 1965, survived by his wife and daughter.

Pardon

On October 10, 2019, President Donald Trump issued a full pardon to Jeffries for a conviction for engaging in anti-competitive practices in violation of the Sherman Antitrust Act of 1890, for which Jeffries had been convicted in 1948, and assessed a $2,500 fine with no jail time.

Selected publications Jeffries, Zay, and Robert Samuel Archer. The science of metals. McGraw-Hill, 1924. Edwards, Junius David, Francis Cowles Frary, and Zay Jeffries. The aluminum industry. Vol. 1. McGraw-Hill book company, inc., 1930. Edwards, Junius David, Francis Cowles Frary, and Zay Jeffries. The Aluminum Industry: Aluminum products and their fabrication. Vol. 2. McGraw-Hill book company, Incorporated, 1930.

Articles, a selection Jeffries, Zay. "Effect of temperature, deformation, and grain size on the mechanical properties of metals." Trans. AIME 60 (1919): 474–576. Jeffries, Zay, and R. S. Archer. "The slip interference theory of the hardening of metals." Chem. and Met. Eng 24.24 (1921): 1057. Jeffries, Zay. "The trend in the science of metals."Transactions of the American Institute of Mining and Metallurgical Engineers, 70 (1924): 303–327.