AOC.
Air Operations Control Center.
AQG.
Gasoline tanker.
AP.
Transport ship.
APG.
Aberdeen Proving Ground, Maryland.
ARA.
Allied Research Associates, Boston, Massachusetts.
ARS.
Salvage ship.
ARSD.
Salvage lifting ship.
ASA.
Army Security Agency.
ASU.
Army Support Unit
ASW.
Anti-Submarine Warfare.
ATA,
Auxiliary ocean tug.
ATCOM.
ATF.
Atoll commander.
Fleet ocean tug.
atoll. A ring of coral reefs, usually with small islets, that surrounds a Jagoon. Most are Iso lated reefs
rising from the deep sea that have built up on submerged voicanoes. They vary considerably in stze;
the largest atoll, Kwajalein in the Marshall Islands, has an irreqular shape that extendll f or 84 miles
(135 km}.
See also coral reef.
atomic bomb {or weapon). A term sometimes applied to a nuclear weapon utilizing fission enerdy only.
also fission, nuclear device.
atomic explosion.
See
See nuclear explosion,
attenuation. The process by which radiation is reduced in intensity when passing through soma m aterial.
It is due to absorption or scattering or both, but it excludes the decrease of intensity Pi th distance
from the source (inverse square law), which see.
€
AU.
Army Unit.
AV.
Seaplane tender.
AVR.
Aircraft rescue vessel.
AW.
Distilling ship.
8-29,
A 4-engine, propeller-driven bomber developed by Boeing, used for weather reconnaissancd, cloud
desigtracking, aerial sampling and photography, and aerial refueling at the PPG. These versio
nated RB-29, WB-29, and KB-29.
B-36.
A long-range, strategic bomber powered by six pusher propeller engines, supplemented by
engines. Oeveloped by Consolidated Aircraft. Used as the subject of effects experiments
sampler controller aircraft. Also designated FB-36, RB-36, and W8-36.
our jet
nd as a
B-47.
A 6-jet-engine bomber with sweptback wings and a double-wheel bicycle landing gear, deve oped by
Boeing. Used as the subject of effects experiments.
8-50.
A 4-engine bomber developed by Boeing, with some features like those of the 8-29, but ha ing 2
taller tail fin and larger engines and nacelles.
B-57.
U.S. version of English Electric Canberra bomber used as cloud sampling aircraft.
from cosbackground radiation. The radiation of man's natural environment, consisting of that which come
mic rays and from the naturally radioactive elements of the Earth, including that from with in man's
body.
The term may also mean radiation extraneous to an experiment.
barge. A floating platform used as the support for the cab, or shelter,
ing prepared for testing.
472
tn which nuclear deviceg
were be-