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Program 2, Nuclear Radiation and Fallout; Projects
2.1, 2.2, 2.3, 2.5a-b, 2.6a-b

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Program 3,

Blast Effects;

Projects 3.2,

3.3,

3.5

Program 6, Systems Effects; Projects 6.2, 6.2a-b, 6.8,

6.5, 6.6

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Program 7, Electromagnetics; Projects 7.1, 7.2, 7.4
Program 9, Cloud Photography.

Chapter 3 contains a detailed description of these projects] as well as
a description of the participation of the DOD in other portionsJof the
CASTLE experimental programs.

The locations of instrument stations for

these projects are indicated in Figure 54.
The locations of the ships of the fleet at burst time are co in

Figure 55.

Aircraft missions and positions are given in Table

Po.

THE TEST

At 0645 the firing signal was sent and the device exploded,[J releasing
the energy equivalent of 15 million tons
greater than expected.
km)

This yield was much

In a few seconds, a fireball nearly 3 mbles (4.8

in diameter had formed,

200 feet

(MT) of TNT.

and a crater about 1 mile

(1.6 km)

(60 meters) deep was gouged from the reef off Nam.

ThE

fkcross and

illumina-

tion from the fireball was visible for nearly a minute on Rongefik, 135
nmi

(250 km) east of the burst.

ing boat 85 nmi

(157 km)

It was also observed on a Japahese fish-

east-northeast of Bikini.

fireball had risen to 45,000 feet

Within 1 miftute the

(13.7 km) and the pulverized

the crater was pulled up into a cloud that was already 3 miles
across with a stem 2,000 feet

foral from
[4.8 km)

(600 meters) wide.

Within this first minute, the blast wave from the explosion| had moved
outward from the burst point, stripping the nearby islands of vpgetation.
The blast wave was received with diminished force 14 nmi

(22.5

Km)

across

the lagoon at the evacuated camp on Eneman, where it damaged cofisiderably
the lightweight temporary buildings

(Figure 56).

An electrical short cir-

cuit caused a fire, destroying much scientific equipment (Figur

205

57).

The

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