Speaking of noises, here's a good one for you -- an apparatus called a Boulder Buster. Since it uses a .22 shell-sized discharge device activating a shotgun shell-sized secondary discharge device, there are no explosives needed; just a drilled hole in the rock filled with water, which will become vaporized upon firing. The result is a loud BANG! followed by fragmentation of the rock, with any luck. It took us about 25 tries to get this huge slab broken apart, but when we did, look out below!!! By the way, the slant of the slab is the actual slant, not the tilt of the camera. What does that tell you? Proceed at your own risk.
