- DemolitionMike Daigh has been in the drilling and demolition industry since 1961 and has been involved with Rock Splitting Mortars since it's introduction into the United States market in 1978.
- ExcavationMass Rock Excavation Foundation: Mass Rock/Outcropping: Rock: Pegmatite, Holes drilled: 1⅞" diameter holes, depth 8-10' deep, Problem: impact hammers would not break the rock. Explosives could not be used due to confined space.