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Fred Murphy and Bill
Herkelrath have developed a sample-freezing drive shoe. The drive
shoe prevents the loss of fluids and sample during retrieval of cores
of saturated, noncohesive sediments. The drive shoe has been used successfully
at the Bemidji and the Cape
Cod Toxics sites., and has satisfactorily collected samples from more
than 50 feet (15 m) below the water table. For more information link to
the following
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