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 ...

Cosmic impacts might help synthesize organic compounds

Bullets of ice shot at high speeds can deposit organic compounds on surfaces they strike. The new findings suggest that comets might, indeed, have helped deliver key ingredients of life to Earth and perhaps elsewhere, researchers ...

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