Crusher - WikipediaA crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. . Other metallurgical developments such as silver and gold mining mirrored the practices and developments of the . Things only became worse when the English figured out how to cast the more economical iron cannons (1547),.english for gold crusher machine,Berdan's Gold Crushing Machine - Scientific AmericanEnglish; Cart 0; Sign In | Register . Berdan's Gold Crushing Machine . The experiment was made with the refuse from the workings of the Gold Hill Mining Co.,.
english for gold crusher machine