Jaw Crusher Working Principle- gold jaw crusher historic ,Jaw Crusher Working Principle Jaw crusher is widely used in industrial and mining enterprises , this is because the aircraft structure is relatively simple , and has a large range of models . Jaw crusher is mainly used as the primary crusher.Jaw Crushers and Hammer Mills for Ore Mining - MBMMLLCOur jaw crushers, hammer mills, and shaker tables are a great way to get a small to medium mining operation up and running quickly. Made in the USA. MBMMLLC