5-
5el
APPLICATION
Fallout Studies
The HASL Aerial Survey System has been used successfully on
Operation Wigwam,
However, the data is classified and is not in=
cluded here.
Field tests were conducted at the U. S. Atomic Energy Commission,
Nevada Test Site during Operation Teapot, Figure 21 shows the aircraft installation at the operator's position used during these
tests.
In front of the operator's seat are the control box and the
recorder, which indicates aircraft radiation intensities, .The jwece
tion box is mounted on the left side of the operator. The recorder,
which indicates ground level intensities, was mounted on the right
side of the aircraft facing the operator.
The Telepulse Coding
Station is behind the control box and the radio equipment is ina
rack behind the operator's seat.
The “Top Hat” detector was moumted
in the tail section of the aircraft, Figure 22, where it is most
distant from radioactive instrument dials and “sees” only the thin
skin of the aircraft between it and the growd.
Data obtained over Yucca Flat when flying south, parallel to
the main access road, is shown in Figure 23,
This data is typical
of that which would be expected from a series of localized con=
taminated areas.
The plane flew at an altitude of 500 feet and
telemetored the data to a Central Station located at the Control
Point (south) end of the Flat, and the chart shown was taken from
the Central Station recorder,
While the basic aerial survey technique as developed by this
Laboratory has applications to raw materials exploration, civil