(hidden) (2-50)
FRAME 2-51.
Some characteristics of an area of interest to engineers, such as the composition of the soil, must be determined
by on-site inspection. Ground reconnaissance is the only one of the three methods that can provide this
information.
Ground reconnaissance is necessary to obtain
information
that
an
only
be
determined
by
_______________________ _____________________.
(go on to next fame) (2-74)
FRAME 2-75.
Refer again to Panel 2-2. Notice that the first column labeled "Key," contains numbers. These Key numbers
are plotted on the situation map, sketch, or overlay which accompanies the report in their proper locations.
The identification of each observed item is shown by a _________________________________ number, listed
on the form and plotted in its correct position on a __________________________, _________________________
or ________________________.
2-6
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