A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. ... The earliest crushers were handheld stones, where the weight of the stone provided a boost to muscle power, used against a stone anvil.
Stone Crusher Plant, Stone Crushing Plant with capacity 50tph, 100tph, ... 600tph and also choose Stationary crusher plant type or Portable crushing plant. ... feeder is an instrument that uses vibration to "feed" material to a process or machine.