Classification, Distribution and Uses of Ores and Ore Deposits - Metals and Society: An Introduction to Economic Geology - page 41

Fig. 2.2 Global trade in minerals. (a) Trade in bauxite and alumina. (b) Trade in iron core. (c)
Trade in copper. (d) Trade in tin
the higher metal price would, on one hand, allow companies to open mines in
hitherto marginal deposits or conduct exploration to find new deposits; and on the
other hand, replacements would be sought and found for the industrial uses of the
metals. These issues will be revisited in Chap. 6.