Testing
Approximately 50 discharges were performed in a laboratory environment, half in concrete and half in hard rock. The concrete used was 7MPa tensile and 40MPa compressive strength, while the granite rocks had tensile strength between 10-20MPa and compressive strength up to 130MPa.
From testing, the average breakage radius was 2-3 feet in all directions, with a total fracture of 8-27 cubic feet per discharge. Holes of 1-inch diameter and 6-, 12- and 18-inch depth were drilled, although it is possible to drill larger holes.
Our technology performs better in hard rock than soft rock, producing cleaner fractures and higher volumes of fracture, and requiring less energy. Experiments were performed on granite and gneiss, producing pressure waves up to 1GPa.
While no formal vibration or air over pressure testing has been performed, technicians who were ~10 feet from the discharge reported the sound to be equivalent to dropping a boulder on concrete from a ten-foot height.