All stone material that occurs on the construction site such as construction rubble can be meaningfully and quickly crushed on site with the Dappen “Hydro Crusher” and then recycled. It is used in demolition, in quarries, in road construction and in horticulture and landscaping. Adjusting the crushing jaw makes it possible to adjust the grain of the material to be crushed to a size of between 25 mm and up to 150 mm.