He was born Dec. 27, 1934, in Williston, North Dakota, to Myron Sears Hoyt and Susan Irene Reese Hoyt.
He grew up in Powell and received a bachelor’s degree and a master’s degree from the University of Wyoming and a Ph.D. from Stanford University, all in civil engineering. He served as a commissioned officer for two years in the U.S. Army. He was a professor of civil engineering at the University of Wyoming and also taught at Stanford University while earning his Ph.D. Phil was self-employed at Electro Mechanical Technology in Salt Lake City from 1986-2017.
Phil married Deanna Jean Davis on Aug. 30, 1956, in Evanston; their marriage was later solemnized in the Salt Lake Temple of the Church of Jesus Christ of Latter-day Saints. He served in multiple positions in the LDS church, including being the first stake president of the first Laramie Wyoming Stake from 1983-86.
Phil was preceded in death by both of his parents.
Phil is survived by his wife, Deanna; their three children, Tamara Lea (Arthur) Fox, Tracy Lynn (Ken) Maxfield, and Douglas Philip (Amy Ferguson) Hoyt; eight grandchildren; five great-grandchildren; and brother Terry Sears (Betty) Hoyt.
Funeral services were held Saturday at the Murray Utah South Stake Center.