Angie Bacon, civil engineering technician, tests a soil sample for plasticity and liquidity using the "atterberg" limit test at the U.S. Army Corps of Engineers Savannah District Environmental and Materials Unit. USACE photo by Tracy Robillard.
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MARIETTA, GA, US
This work, USACE Savannah District Environmental & Materials Lab [Image 1 of 8], by Tracy Robillard, identified by DVIDS, is free of known copyright restrictions under U.S. copyright law.