The Mining Process – Waihi Gold
1. Mining – open pit and underground. To define the ore from the waste rock, samples are taken and assayed. Assay results are used to mark out areas of ore and waste rock, which are mined separately. Some of the harder areas require blasting to loosen the rock prior to excavation by hydraulic diggers.Process flow diagram iron mining - Mine Equipments,Next: Mining and mineral processing - Everything Science In ancient times mining and mineral processing were very primitive and the main method used to extract ores was digging by hand.Mining is,Iron, Surface mining (open pit mining).,Figure 2: Flow diagram. showing how gold is processed.Basics of an open pit mine - Mine Engineer.Com,Open pit mines can be used in coal mining, and they are used extensively in "hard rock" mining for ores such as metal ores, copper, gold, iron, aluminum, and many minerals. In a open pit coal mine, the pit bottom would be the bottom mined coal seam elevation, since it is usually feasible to extract multiple seams when surface mining coal.