—_———
within a few days after arrival.
Technical measurements being carried out under TU 7.6.6 were quite
diverse in nature but in most cases relatively simple,
Many measure~
ments involved the exposure of materials on stakes driven into the
ground.
These included the film badges for measuring gamma radiation
as a function of distance, and the heat sensitivity papers.
These
stakes had to be driven along two radii on Engebi and on the adjacent
upwind islands.
Shields consisting of steel plates and concrete blocks
were fixed in position,
At several stations racks were installed for
~-.«
the exposure of panels to measure heat sensitivity. In addition,
special panels were prepared containing as many as 50 different materials
consisting of papers, woods, etc., with different types of light filters
in order to measure the spectral and time distribution of the optical
radiation,
Two test animal containers were positioned on land and two
were anchored at the proper distances off shore.
The heavy steel
cylinders for the exposure of biological materials at close range were
located at several distances.
Much of the work involved in these preparations was primarily
manual labor and could have been carried out quite satisfactorily with
a working party under the direction of the project officer.
The
enlisted complement of TG 7.6 was limited to a small number of specialized personnel required for other duties.
Therefore it was
necessary to obtain volunteers from the officer monitors when they
were not involved in preparations for their normal duties.
In future
operations it appears desirable to increase the enlisted complement
78
Section IX
.