4
ERDC/CRREL TN-04-1
that 30 increments that are 5 cm long can fit in a 2-L widemouth bottle. The
aluminum handle is used with these corers.
Figure 1. CRREL coring tools for cohesive soils.
One feature of the larger corers is the ability to stratify cores. When coring in
vegetated areas, the core can be pushed out slowly and the zones (vegetative mat,
root zone, soil) can be separated using the toothed putty knife in Figure 3. This
allows separation of soil zones in composites or the ability to discard unwanted
or excess core, thus reducing the sample size.
All the corers are easily cleaned in the field using the items in Figure 2. The
4-L jug with the spray head contains acetone for rinsing the cores between dis-
crete or composite samples. The wire brush and stainless steel wool is used to
address persistent spots on the tools. Lab-grade wipes are used for wiping the
tools down. The handles to the stops of the smaller corers are easily removed to
thoroughly clean the inside of the corer.
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