Machines and apparatus for mining oil, gas and minerals, namely, drills for the mining industry; drilling rigs; drilling rods being parts of drilling machines; core drilling bits; cutters as parts raise boring machines; drilling rigs for drilling wells on land; drilling rigs for drilling off-shore wells; equipment for mining oil, gas and minerals, namely, impact enhancing machine tools for use in the drilling of oil wells incorporating valves, drill string subs, manifolds, and control units, ...