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On Borrowed Time by John E. Tilton

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Appendix:Real Prices for Selected MineralCommodities, 1870–1997

by Peter Howie

The figures below show the prices for aluminum, copper, pig iron, iron ore, nickel, lead, silver, tin, zinc, petroleum, natural gas, and bituminous coal deflated by the U.S. producer price index over the period 1870 to 1997. They are an update of the price data that Robert S. Manthy provides in his 1978 book, Natural Resource Commodities—A Century of Statistics. This book, in turn, updates the 1962 book by Neal Potter and Francis T. Christy, Jr., Trends in Natural Resource Commodities. Both volumes, published by Johns Hopkins University Press for Resources for the Future, contain a wealth of other data on mineral output, consumption, trade, and employment.

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