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Joint Task Force SEVEN

Task Group 7.3:

Operation Plan

Eniwetok Atoll, M.I.

Appendix IV to Annex G
Radioactive Fallout Reports
1. For one week following each shot each ship shall report radioactive fallout
encountered as follows:

a. A report shall be made of fallout readings (gamma only) of 1 mr per hour

or higher,

b. Only the value of gamma radiation shall be reported.
c. Reports will be coded as follows:

'Rabbit" followed by a number to

indicate average topside activity, the number indicating mr per hour (gamma
only); "Cat" followed by a number to indicate maximum activity found on the

ship, the number indicating mr per hour (gamma only).

Thus a message "Rabbit’

2 Cat’ 7" indicates the average topside activity is 2 mr per hour (gamma only),

and the maximum activity found on the ship is 7 mr per hour (gamma only).

Fractional numbers will be reported as the nearest whole number.

Thus if the

average topside activity is 3.8 mr per hour (gamma only) and the maximum
activity found on the ship is 8.4 mr per hour (gamma only) the message to be
sent is "Rabbit 4, Cat 8".

dad. New reports shall be made when the average topside activity increases
to more than twice that last previously reported or decreases to less than
half that last previously reported.
e. Reports shall be sent by radio or light to CTG 7.3, to the USS BAIROKO,
and to the USS ESTES, These reports shall be delivered to the RadSafe Center
on the BAIROKO and to the RadSafe Office on the ESTES.
f. Reports shall be sent on TG 7.3 UHF Admin or CW Common or on TG 7.1 Pogo
or Admin Nets, as appropriate.
ge One week after each shot every ship shall send to CTG 7.3 a complete
letter report on radioactive contamination experienced since the shot occurred.
As applicable, each letter shall include a table with estimated average intensity
topside in milliroentgens per hour and approximate position of ship in latitude
and longitude at fallowing times: Hourly on the hour from How hour to 2000M Dog
day; every four hours from 2000Dog day to O400M Dog plus two day; daily at

O800h Dog plus two

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olderATE 7 CTO 73 —

CHANCE #1

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