PHASES OF A MINING PROJECT. value of the mineral ore deposit is obtained during ... ores that are extracted using strip mining methods, ..... at the Grasberg mine in Indonesia the local.
An ore is a rock or mineral that has enough metal in it to make it worth extracting. Mining copper About 200 years ago the UK was an important world source of copper and tin and there were mines in Cornwall and Devon. These mines have now closed and today the biggest copper mines are in Chile (Escondida mine) and Indonesia (Grasberg mine).