The Xi chapter (#14) at Colorado School of Mines was installed November 21, 1925 with Grand 2nd Vice President Arthur Harvey serving as the installing officer and the Kappa chapter serving as the installing chapter. Charter members of the Xi chapter include: Donald Austin, Charles Beech, Nicolai Beliaeff, Martin Bender, Harold Browne, Field Davis, Donald Gahagan, Frank Harsh, Lyle Henderson, Francisco Joaquin, Turner Jones, Harvey Mathews, Howard Rines, Harlan Short, George Shue, and George Thomas.
