CIO.
Criminal Investigation Detachment {Army).
FINCPAC.
CUTF 7.
Commander-in-Chief of the Pacific.
Commander, Joint Task Force 7.
cloud column (funnel).
The visible column of weapon debris (and possibly dust or water drofflets) extend-
Ing upward from the point of a nuclear burst.
closed area.
The land areas of Bikini and Enewetak and the water areas within 3 miles of tifem that the
United States closed to unauthorized persons.
cloud phenomena.
af
LEE tpiaPeA,
|
|
See fallout, fireball, radioactive cloud.
collimate, To align nuclear weapon radiant cutputs within an assigned solid angie through the use of baffies in order to ennance measurements.
NO.
Co.
Chief of Naval Operations.
Chemical symbol for cobalt.
cobalt.
Metallic element with radionuclide 60¢o used as calibration source for gamma instruftents.
Condition "Purple".
Consolidated List.
See Purple conditians.
Consolidated List of Radiologica! Exposures.
The list that covers all racorded indi-
vidual radiological exposures for all joint task force participants (see Reference 13).
tontamination. The deposit of radioactive material on the surfaces of structures, areas, ob
sonnel following a nuclear detonation. This material generally consists of fallout in
products and other device debris have become incorporated with particles of dust, vapor
of device platforms, etc.
Contamination can also arise from the radioactivity induced
stances by the action of neutrons from 2a nuclear explosion.
See also decontamination,
debris.
coral reef. A complex ecological association of bottom-living and attached shelled marine a
that Form fringing reefs, barrier reefs, and atolls.
The Jagoons of barrier reefs and
portant places for the depasition of fine-grained calcium carbonate mud.
od
t
CPM.
cts, and perich fission
ed components
certain subTlout, weapon
imal fossils
rolls are fm-
Counts per minute, a measure of radioactive material disintegration.
crater.
The depression farmed in the surface of the Earth by a surface or underground explos on, Crater
formation can occur by vaporization of the surface material, by the scouring effect of a rblast, by
throwout of disturbed material, or by subsidence.
CRL.
Cook Research Laboratories, Chicago,
cryogenic materials.
Illinois.
Materials used for producing very low temperatures.
C/S.
Chief of Staff.
cTG,
Commander, Task Group.
curie (Ci). A ynit of radioactivity; it is the activity of a quantity of any radioactive sped jes in which
.
x 1010 (37 billion) nuclear disintegrations occur per second (approximately the ra igactivity
of 1 gram of radium). The gamma curfe is sometimes defined correspondingly as the activ y of material in which this number of gamma-ray photons is emitted per second. This unit is bein replaced by
the becquere!? (Bq), which is equal to one disintegration per second.
CVE.
Escort aircraft carrier.
CW net.
Carrier wave network.
An organization of stations capable of direct radio communications on a
common channei or frequency.
Daigo Fukuryu Maru {Fortunate Dragon No. 5).
1954,
Japanese fishing trawter in Bikini Atoll] area onffl March
O-day. The term used to designate the unnamed day on which a test takes place. The equivatenf rule applies to H-hour. Time in plans is indicated by a letter which shows the unit of time empffloyed tn
figures, with a minus or plus sign to indicate the amount 3f time before or after the refdrence event,
e.g., D+? means 7 days after O-day, H+2 means 2 hours after H-hour.
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