Rocky Flats Plant,
Plant Security and Armory
HAER No. CO-83-X (Rocky Flats Plant, Building 121)
Rocky Flats Environmental Technology Site, Highway 93, Golden, Jefferson
County, Colorado. Building 121 is located west of Third Street and south of Central
This building is a primary contributor of the Rocky Flats Plant
historic district, and is associated with the U.S. strategy of nuclear military deterrence
during the Cold War, a strategy considered of major importance in preventing Soviet
nuclear attack. Protection strategies for the plant included having a highly trained
special response team that could respond to actual or potential terrorist incidents,
hostage barricade incidents, and other emergencies. Building 121 was one of the original
structures at the Rocky Flats Plant, and was used for the site security central
Building 121 is a two-story, 6,530 square foot building built on
a concrete slab on-grade foundation. Exterior walls are constructed of concrete and
concrete block. Interior walls are concrete, concrete block, gypsum board, and ceramic
tile. The facility has a flat roof covered by neoprene-hypalon and butyl rubber over
plastic foam insulation. The roof structure is cast-in-place concrete over corrugated
metal decking and bar joists. Floors are covered with 12-inch-square vinyl asbestos tiles
or short pile industrial carpet. The windows are fixed, double-panes in metal sashing. The
doors are metal.
Building 121 is irregularly shaped, extending approximately 100 feet north-south, 130 feet
east, and 120 feet west.
The building houses offices, the plant's central alarm station, alarm consoles, the
armory, the lock and key section, a computer room (on the second floor), a utility room,
separate mens and womens locker rooms with showers and attached
restrooms, and security management offices.
Building 121 was constructed in 1953 as part of the original plant to
serve as the central office building for site security. By 1971, the security force had
grown in numbers to the point that Building 121 was too small. The locker rooms and
briefing room could no longer accommodate the force. The supply room, where uniforms and
equipment were stored and issued, was inadequate. Additions were made to the building to
increase the size of the locker rooms on the first floor, and a second floor was added for
central dispatch and communications systems. The supply room was moved to another
Protection strategies for the plant included maintenance of a weapons arsenal, training
new security police officers, investigating violations of federal laws, and maintaining
liaisons with federal and local law enforcement agencies. The security contractor had a
highly trained special response team that could respond to actual or potential terrorist incidents, hostage
barricade incidents, and other emergencies.
Cunningham, Steven, employed at the plant since 1977 by the site
security contractor. Personal communication, March, 1998.
United States Department of Energy. Final Cultural Resources Survey Report (1995), by Science Applications International Corporation. Rocky Flats Repository. Golden,
United States Department of Energy. Site Safety Analysis
Report, Notebook 13-Security, by EG&G Rocky Flats, Inc.
Rocky Flats Repository.
Golden, Colorado, 1995.
D. Jayne Aaron, Environmental Designer, engineering-environmental
Management, Inc. (e2M), 1997. Judith Berryman, Ph.D., Archaeologist, e2M,
Index to Photographs
Located west of Third Street, south of Central Avenue, Golden Vicinity, Jefferson County, Colorado.
Photographs CO-83-X-1 through CO-83-X-2 were taken by various site photography
contractors, dates are indicated in parentheses.
CO-83-X-1 – View looking southwest at Building 121, the plant security building. Building 121 was one of the original structures at the Rocky Flats Plant. It shared a common wall with Building 122, the emergency medical building. (7/29/52)
CO-83-X-2 – View looking southeast at Building 121. The building housed offices, the Rocky Flats Plant central alarm station, alarm consoles, the armory, the lock and key section, a computer room, a utility room, and locker rooms with showers. (1/98)