الجرافيت والجبس عمال المناجم في مصر
الحجر كسارة المطرقة المطرقة. Crusher Wikipedia A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust The earliest crushers were handheld stones, where the weight of the stone provided a boost to muscle power, used against a stone anvil of force concentrated in the tip of the miners pick or sledge hammer driven drill bit