Over the intervening years, the protected area expanded several times and its name and purpose were changed. On April 13, 1942, President Roosevelt issued Executive Order 9132 which turned over even more Corps-administered land to the game refuge. On February 25, 1963, President John F. Kennedy issued Public Land Order 2951, changing the name of the range to the Charles M. Russell National Wildlife Range. On March 25, 1969, President Lyndon B. Johnson issued Public Land Order 4588, which established the UL Bend National Wildlife Refuge. This order dissolved Executive Order 7509, and re-established the Russell National Game Refuge under the authority of the Migratory Bird Conservation Commission. The exploitation of the UL Bend National Wildlife Refuge for oil, natural gas, coal, and other minerals was prohibited on May 15, 1970, by Public Land Order 4826.