Had some fairly large rocks in my yard, I mean 6’high 8’ long kind of rocks. Bigger than any machine around here could move. So I took my hammer drill an with a 2’ long bit I drilled a series of holes. Filled with water and pounded wood dowels in holes. Let it freeze worked amazingly well broke them up to sizes my Massey could handle with no TNT and the kaboom that goes with it.
