I forget the name but they have a new chemical/gas used for blasting rocks that has no shockwaves and does not need government approval. I am sure its way less satisfying as a good old dynamite blast though.You need dynamite (or "similar material").
As far as the weight thing as posted above it is the weight of the machine not its lifting power. Youtube vids estimate it can lift about 800 lbs safely on a 1 ton.