Geddes Murray Webster moved to Yellowknife in 1946, where he began working as a mining consultant. In 1947, he was appointed as a Mining Recorder and then as an Assistant Mining Inspector for the Department of Northern Affairs and Natural Resources. During his employment with the Federal government, he was responsible for monitoring approximately 320 mining companies and syndicates that were actively engaged in exploration and development in the Northwest Territories. During his career, he was also a member of the Ontario Securities Commission and a partner of Wisener and Partners. Geddes later established his own company, Geddes Resources Limited, which was based in Toronto. Geddes' other interests included woodworking and writing. He published a book in 2007, entitled "The Prospectors' Pick: The People of the Yellowknife Gold Boom 1936-1951".
Geddes was married to Ruth and had three children. He passed away November 10, 2012, in his 95th year.