(Duke University) A powerful shockwave from the H.L. Hunley's own weapon killed the crew of the Confederate combat submarine as it sunk a Union ship. This finding comes from a four-year research project that involved repeatedly setting blasts near a scale model, shooting authentic weapons at historically accurate iron plate and many calculations on human respiration and the transmission of blast energy by Rachel Lance, a 2016 Ph.D. graduate of Duke Engineering.
from EurekAlert! - Archaeology http://ift.tt/2v6DEoT
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