onen
of the danger area for other boats or ships will have been
Started,
There will be several more informal meetings of
Admiral Hanlon and his advisors up to the time of the shot,
but for the sake of brevity, I will assume that conditions re~
main favorable,
By about 2:30 or 3:00 p.m., all personnel and equipment
Should be evacuated from Bikini and the ships will be ready
to leave the lagoon,
The only people left are a small party
in the firing station,
That station is so constructed as to
be completely safe from blast, water waves, and fall-out during
the detonation, and is in constant communication with the com~
mand ship,
down,
The ships will probably leave the lagoon anout sun-
Aircraft for effects measurements, etc., will be taking
off at scheduled times prior to the shot.
Let us now assume that conditions continue satisfactory
and the device is fired,
Prior to the detonation a sequence
timer sends out signals to all stations,
opening shutters,
Starting cameras, etc,
After the detonation we will wait about an hour for the
dust to clear away, and then send in a helicopter to survey the
damage and to determine the radloactive situation in the lagoon
and around the recording stations,
if the report from that survey is favorable,
recovery
parties can start in and the ships can re-enter the lagoon,
By the end of the day, most recovery should be accomplished and
work will have started to get the next shot ready,
As a final subject, I would like to tell you about some
of the measurements we will make of the particular high-yield
shot you will see,*
Pictures will be taken which will allow a
measurement of the fire-ball diameter as a function of time and,
*Note: If a fission device, see Attachment B for the conclusion
of the talk,
- ll -
Sin
Appendix "B"