Crusher - WikipediaA crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. . The earliest crushers were hand-held stones, where the weight of the stone provided a boost to muscle power, used against a stone anvil. .. that moves a shaft creating an eccentric motion that causes the closing of the gap.stone crushers closure,NGT orders closure of two stone crusher plants | Dehradun News .Nov 27, 2018 . Nainital: The National Green Tribunal (NGT) has ordered closure of two under-construction stone crusher plants till further orders in.
stone crushers closure