Researchers build cannon to test seals in coal mines

Mining and explosives engineering researchers at Missouri S&T began testing concrete seals used to close coal mine tunnels this month by loading a cannon with projectiles, shooting them at the seals and testing their impact. ...

Reconstructing an ancient lethal weapon

Archaeologists are a little like forensic investigators: They scour the remains of past societies, looking for clues in pottery, tools and bones about how people lived, and how they died.

Sand absorbs high-speed ballistic impact better than steel

A study led by Assistant Professor Darren Chian Siau Chen from the Department of Civil and Environmental Engineering at the National University of Singapore's Faculty of Engineering has found that when a projectile is fired ...

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