The 4265 Gyratory Crusher - YouTube
When a rock has values in it, it's then called ore. In order to liberate the minerals, it needs to be crushed down. In days of yore, a stamp mill was the primary form of crushing rock, but in the modern world, there are jaw crushers, impact mills and gyrator crushers, as well as ball mills. They all have their own pros and cons -- and price tags.The all-new Kinetic Rock Crusher Set provides real construction fun for kids ages .. to buy more would be nice without having to buy this entire kit all over again!