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Memoirs of the Geological Survey Special Reports on the Mineral Resources of Great Britain

Abstract

Like the three previous volumes dealing with British lead and zinc ores which have been issued by the Geological Survey, it must be admitted regretfully that the present one has a scientific rather than an economic interest. Some of the mines described in the present volume, like Frongoch mine in Cardiganshire and the Van mine in Montgomeryshire, have been extraordinarily productive; the former has been worked for 59 years and the latter for 51 years, and from each more than 100,000 tons of lead and zinc ores have been produced in the course of its career, but in both cases the really productive period was something like half a century ago. The author suggests that it is just possible that these mines might show an improvement by sinking deeper and reaching harder rocks than the soft shales in which they are now bottomed; the prospect, however, is not a very promising one, and the present low price of lead affords no encouragement to spend money on prospecting operations of a highly speculative nature.

Memoirs of the Geological Survey. Special Reports on the Mineral Resources of Great Britain.

Vol. 20: Lead and Zinc. The Mining District of North Cardiganshire and West Montgomeryshire. By Dr. O. T. Jones. Pp. vi + 207. (London: H.M. Stationery Office, 1922.) 7s. net.

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