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Because of the heavy weight, 4 cu. yd. was set as the maximum mix for
any one batch.
The use of this method proved very satisfactory and
no difficulties occurred other than usual minor stoppages.
The 8
cu. yds. of concrete in the walls and roof of this structure were
poured in two and one-half hours.
The inside wall forms were stripped from the timing station on
18 February in order to allow representatives of QM AEC
group to begin building a lead brick box, part of the technical installation.
The concrete was in excellent condition and no temperature
cracks were visible.
Meanwhile forms and steel were being placed in
position at the blast buildings, Gamma Station B, five type A and two
type B blast footings.
Permission was obtained to use slotted inserts,
where bolts could be placed later, in all blast footings,
and the
seven that were ready were poured on 20 and 2] February using coral
concrete.
Gamma Station B was poured on 25 February.
This structure,
like Gamma Station C, is of heavy concrete; the same method of handling
the heavy aggregate was used as described above and five hours was the
time for pouring the 38 cu. yds. in the walls and roof.
The walls and
roof of the blast building were poured on 26 February without incident.
An old salvaged refrigerator was brought over from Eniwetok
27 February and placed near the Zero Tower generators for housing
radar equipment.
Power for operating the radar beacon is furnished
by the Zero Tower generators which were placed in operation 28 February.
Construction of a tank shelter approximately one mile from the Zero
Tower was started 1 March and finished Friday 5 March.
For this
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