Us6637133b2 Ballast Cleaning Machine Google Patents
Ballast stone crusher, Ballast crusher machine, Ballast . The sleepers lie on top of the ballast, over which the railway tracks are laid. . Ballast crushing and screening plant consists of jaw crusher.PRODUCTS. 57 Stone is a course aggregate that may be processed from gravels, granites, limestone, dolomite, sandstones, or other naturally occurring hard, sound, durable materials meeting the gradation requirements of Table 1, Section 901-1.4, of the Florida Department of Transportation's Standard Specification. 57 Stone averages up to 1-1 2.