Supplier of Da-mite Rock Splitting Mortar, a non-explosive method used to fracture rock and concrete in no-blast conditions. Da-mite is an ideal and effective tool for fracturing mass rock, boulders, trench rock, dimensional stone, tunnels, concrete and reinforced concrete. Da-mite is easy to use. It is mixed with water and placed in drilled holes, where it sets and expands with a compressive strength of over 18,000 psi. Da-mite has more than enough force to get the job done. No license required. Four grades of Da-mite provide enough versatility to be utilized in drilled hole diameters from 1" to 2 3/4".