Crusher - WikipediaA crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. . The earliest of these were in the foundries, but as coal took hold the larger operations became the coal .. A gyratory crusher is similar in basic concept to a jaw crusher, consisting of a concave surface and a conical head; both.shipping concept in coal mining crusher,Losses in the coal supply chain - United States Energy AssociationDec 7, 2012 . As soon as the coal leaves the mine, mass loss can occur . chain, and even measuring the volume held in a ship. .. Dilution is a different concept where unwanted additional material, perhaps through over digging, ... (6 inches) would not enter a separation plant, although crushing would be carried out.
shipping concept in coal mining crusher