If a robotic applicator is mentioned in connection with mining or tunneling and shotcrete, what is meant is an apparatus used to hold and control a spraying nozzle. Why should this be necessary when a man can do the same work? Tunneling and mining development are intrin-sically hazardous forms of construction. When shotcrete is used as initial temporary support after blasting, using a mechanical arm to extend into an unsupported area is a great enhancement to personnel safety.