Jaw crushers are supplied in sizes up to 1,600 mm (gape)×1,900 mm (width). For coarse crushing application (closed set~300 mm), capacities range up to ca. 1,200 t h −1 . However, Lewis et al. (1976) estimated that the economic advantage of using a jaw crusher over a gyratory diminishes at crushing rates above 545 t h −1 , and above 725 t h −1 jaw crushers cannot compete.