Originally published in 1984. This book addresses the economics of the changing mineral industry, which is highly affected by energy economics. The study estimates, in quantitative terms, the short- to mid-term consequences of rising energy prices alongside falling ore quality for the copper and aluminum industries. The effects of changing cost factors on substitution between metals is assessed as is the potential for relying on increased recycling. Copper and aluminum industry problems should be representative of those faced by the mineral processing sector as a whole. Two complex econometric models presented here produce forecasts for the industries and the book discusses and reviews other econometric commodity models.