posted on Feb, 25 2013 @ 03:12 AM
The numbered areas originated way back when Nellis Range was first established, back before WWII. Most of the numbered areas are in the Nevada
National Security Site (NNSS, formerly NTS), established in 1950, which is owned by the DoE and used for atomic tests and related experiments. Area
51 is adjacent on the east to the NTS' Area 15, and was the site of a WWII aux airfield, then established as a secret area under the CIA in 1953. It
was turned over to the Air Force in 1977.
The only other numbered area that I know of is Area 52, which is the Tonopah Test Area, northwest of Area 51.
A good map overlay for Earth is available from the User Community for Google Earth. It names and delineates all the areas in the NTS and has flags in
the others; it also annotates all the nuclear test areas and every nuclear test executed all over the world, and a lot of other interesting related