Influenced by his father, who was an architect during the Great Depression, Dr. Roy W. Hann Jr. entered the world of civil engineering due to his desire to learn about the strength of architecture as opposed to its aesthetic beauty. After receiving a Master of Civil Engineering in 1957, he began working as an engineer with C.H. Guernsey & Associates in Oklahoma City for one year before becoming an assistant professor of civil engineering at the University of South Carolina from 1962 to 1964. Thereafter, Dr. Hann began his longstanding tenure with Texas A&M University, where he began as an assistant professor of civil engineering in 1965 and later climbed the ranks to associate professor in 1967 and professor in 1971. Granted emeritus status in 2010, he also served the university as a research engineer, head of the Environmental Engineering Division, director of the sea grant program, and director of the Institute for Oil Spill Technology. Through Texas A&M University and approved consulting, Dr. Hann carried out Environmental Engineering and Oil Spill Control Technology projects for four United Nations agencies, individual nations, six US Government organizations and four military services.

Alongside his academic endeavors, Dr. Hann has been a Charolais cattle rancher since 1978. The owner and operator of Spring Valley Ranches in Milam County, Texas, he breeds purebred Charolais cattle, which are well regarded for their performance, carcass cutability and distinct color pattern. Discovering that these cattle also offer good fertility,
functionality, fleshability and docility, he has continued to breed Charolais cattle in an effort to provide the agricultural industry with high-quality cattle. Operating the ranch with his son, who also holds engineering degrees, Dr. Hann’s ranch can hold up to 200 cattle. He enjoys raising and selling Charolais bulls to individuals who use the bulls to create hybrid cattle in the market.

As a testament to his success, Dr. Hann has received several accolades throughout his career. The highlight of his career was being honored with the Palladium Medal from the National Audubon Society and the American Association of Engineering Societies in 1983, a prestigious honor for individuals in engineering who worked in the environmental conservation field. Dr. Hann was notably the first recipient of the medal, which was a tremendous honor. In light of his exceptional achievements, he was also highlighted in Who’s Who in Finance and Business, Who’s Who in America, Who’s Who in American Education, Who’s Who in Science and Engineering and Who’s Who in the South and Southwest.

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