Portable crushers are rugged and versatile, offering solid performance in processing bulk aggregate, mineral, and ore materials for high-volume lab testing, pilot-plant, and small production operations. Models are available powered with gasoline or diesel engines, or electric motors. Jaw Crusher and Hammermill models can be used independently, but also work efficiently together as primary and secondary crushers for reduction of bulk materials from 8in (203mm) to finer than No. 35 (0.5mm) sizes.