U.S. Army Corps of Engineers, Savannah District’s Mike Wielputz shows contractors how to conduct an Atterberg liquid limits test, which assesses the water contents which define the limits of various stages of consistency for fine-grained soils, as part of providing training on materials laboratory testing standards and necessary certifications in Powidz, Poland as part of the munitions storage area construction efforts June 29, 2022. The U.S. Army Corps of Engineers, Europe District construction involves building more than 50 bunkers, using roughly 17,500 cubic meters of concrete and the training is part of ensuring the project and its on-site concrete laboratory meet all required standards. (U.S. Army photo by Chad Gartrell)

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Photo by: Chad Gartrell |  VIRIN: 220630-A-WZ074-001.JPG