Previous to the Mineral Leasing Act of 1920, the
General Mining Act of 1872 authorized citizens to freely prospect for minerals on public lands and allowed a discoverer to stake claims to both minerals and surrounding lands for development. This open-access policy enabled a major oil rush in the West, in 1909 prompting
U.S. Geological Survey Director
George Otis Smith to warn Secretary of the Interior
Richard A. Ballinger that oil lands were being claimed so quickly they would be unavailable within a few months. Ballinger notified
President Taft who promptly created the first American oil reserve by executive order on September 27, 1909, withdrawing of public lands in California and Wyoming from further claims, and reserving the oil for use by the United States Navy. Congress ratified the president's authority to set aside federally owned lands with the passing of the Pickett Act () in 1910. The Supreme Court further affirmed the president's constitutional power to withdraw public land from use in . Following these events, Congress enacted the Mineral Leasing Act of 1920 which dictated a system of leasing and development for mining interests on federally owned lands. ==Mineral Leasing Act of 1920==