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A comment on Metal foam obliterates bullets. Parent comment

Re:Metal foam obliterates bullets by tyingq on Sunday April 10, 2016 @03:13PM (#11467669)
Catching spall on the back side of the barrier is the important bit.
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Re:Metal foam obliterates bullets by cellularmitosis on Sunday April 10, 2016 @08:52PM (#11469001)
Why? Does the spall have enough energy to hurt someone?
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Re:Metal foam obliterates bullets by iSnow on Monday April 11, 2016 @01:49PM (#11473596)
jagged splinters with sharp edges being ejected at high velocity - what could go wrong?
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