Originally posted by: Chaotic42
Get a grinding wheel, grind it into powder, then put the powder into concrete and throw it in the water.
Seriously, that seems to be the best option.
Originally posted by: dman
Oh, forgot one, wearing protective goggles, and using a dremmel, spin it up to 50K RPM's and let'er fly.
I hear that's quite interesting... although I'm not brave/crazy enough to try it myself. There is a website out there that talks about it. Bored, here's one that I found
still bored, here's another
both have videos of the mass destruction.