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THE NORTHWARD EXPANSION
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439
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The
Federation is the largest producer of copper in the Commonwealth and
the third largest in the free world; its output is equal to nearly half
the Commonwealth total and about a seventh of that of the free world.
Measured and indicated reserves amount to over 17 million tons of
metallic copper or the equivalent of more than 40 years' supply at
present rates of extraction.39
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(From Colonial Geological Surveys: Mineral Resources Division: Statistical Summary of the Mineral Industry. London, H.M.S.O. passim.)
39 The table and the comment are both taken from the 37th report of the CommonÂwealth Economic Committee, vol. II of A Review of Commonwealth Raw Materials. H.M.S.O. i960, pp. 338-9.
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