Sprayed concrete is a fast hardening material for stabilization and support of structures and for concrete applications without using any moulds. Sprayed concrete is an interaction of man, machine and concrete. Man, personified in the work of the nozzle man, requires technical skills and dedication to the job. The operator must be able to rely fully on the machine and the sprayed concrete material. It is the interaction and quality of these components that finally determines the success of the sprayed concrete application.