Loring Air Force Base
In 1951, the Department of Defense (DOD) allocated funds for the construction of an ordnance storage site at Loring AFB. The designs called for a self-sufficient "maximum security storage area for the most advanced weapons of mankind". The mission of the facility would be the protection and maintenance of the weapons used by SAC. The facility was in the northeast corner of the base, and construction began on 4 August 1951. In addition to 28 storage igloos and other weapons storage structures, the facility included weapons maintenance buildings, barracks, recreational facilities, a warehouse, and offices.
Area 51
Four years of "Project 51" construction began on 1 October 1960 by Reynolds Electrical and Engineering Company (REECo) with double-shift construction schedules. The contractor upgraded base facilities and built a new runway (14/32) diagonally across the southwest corner of the lakebed. An Archimedean spiral approximately two miles across was marked on the dry lake so that an A-12 pilot approaching the end of the overrun could abort to the playa instead of plunging the aircraft into the sagebrush. Area 51 pilots called it "The Hook". For crosswind landings two unpaved airstrips (runways 9/27 and 03/21) were marked on the dry lakebed.