what drives a crusher in gold mining

In Northern Minnesota, Two Economies Square Off: Mining vs ...- what drives a crusher in gold mining , · In Northern Minnesota, Two Economies Square Off: Mining vs. Wilderness. Proposed mines near the Boundary Waters have become the latest front in the fight over who gets to profit from America’s ...Rio Tinto Copper Mine, Palabora, South Africa - Mining ...The Palabora open pit. The very competent rock allows the pit walls to be cut much steeper than is normal in open-pit mining. Loading in the open pit, the bottom of which is …