try it stuck. After l

etting the tempera
tures of the plutonium and casing equalize the
core slid smoothl

y into place. Once the assembly was complete many of the men took a welcome relief and went swimming in the water tank east of the McDonald ranch house. The next morning the entire bomb was raised to the top of the 100-foot steel tower and placed in a small shelter. A crew then attached all the detonators and by 5 p.m. it was comp

Video

• lete. The 1 00-
• foot steel tow
• er at ground zero. At the top is
• a small shelter to protect the bomb d
• uring final assembly. The bomb was not
• dropped from the tower but wa
• s stationary at detonation.
• The tower was va
• porized in the

blast.

• (The test) Three observation points w
• ere established at 10,000 yards from ground zero.
• None of the man

ned bunkers are le

• ft. These wer
• e wooden
• shelters protected by

concrete and earth. The south bunker