Dr. Nathan Sugarman, 73, a nuclear chemist who was a professor at the University of Chicago until he retired in 1987, died Thursday in an accident at his home in the Hyde Park section of Chicago. In World War II, Dr. Sugarman, then attached to the Manhattan Project under Enrico Fermi, was in charge of a group of chemists who determined the efficiency of the first nuclear explosion, conducted in Alamogordo, N.M. He was born in Chicago and received bachelor's and doctoral degrees from the University of Chicago. He went to the Los Alamos Scientific Laboratory in New Mexico in 1945. He received the university's Quantrell Award for excellence in undergraduate teaching in 1966.
Donald C. Dow, 83, an electrical engineer and a retired New York City teacher and guidance counselor, died on Wednesday of bone cancer at his home in South Yarmouth, Mass. The native New Yorker and graduate of Columbia University was a research engineer for Bell Laboratories who worked on the trans-Atlantic communications cable in the 1930s. He taught radio and physics for 42 years in New York, mostly at the Bronx High School of Science. He retired in 1973. A music enthusiast, he was a former president of the New York Oratorio Society.