Apart from the numerous locations of HARTSTEINWERKE there is a stationary gravel crushing plant in the quarry Schelmberg (Kirchberg/Saxony). During 2017 and 2018 four new screening machines, different conveyor belts, a vertical impact crusher as well as a central dust extraction unit were installed. Since summer 2018 the quarry Schelmberg has exclusively produced double-crushed chips in six different types (from 2/5 to 22/32 mm) and double screened sand (0/2 mm). Due to the new technology the output has increased up to 200 tons per hour. Moreover, the quality of the products has been improved significantly.