Gil was born May 31, 1933, in Cumberland, Md., the son of G.S. Hamill III ’31. He attended Mt. Lebanon High School in Pittsburgh. At Princeton, he joined Elm Club and majored in geological engineering. He played freshman football and rugby and participated in IAA football and volleyball. His senior-year roommates were Chuck Williams, George Witter, George Kovatch, Dick Evans, and David Olfe.
After Princeton, Gil earned a master’s degree and a Ph.D. from Rice and served as a geodetic officer in the Air Force. Oil exploration took him to Japan, Australia, Korea, Zaire, Congo, and Texas. He opened an office in Western Australia for Gulf Oil and enjoyed all that country had to offer: tennis, wine and dining, bridge, and banter about being a Yank. After he retired, he built a house on the Sunshine Coast north of Brisbane, where he and his wife spent 16 years traveling back and forth, enjoying perpetual summer.
Gil is survived by his wife, Pamela; children Jennifer and James; three grandchildren; and two great-grandchildren.