DescriptionWales rock strata, William Smith.png English: diagram of section across rock strata in Wales near London by William Smith, as reproduced in William Berryman...
can be obtained, although there is no vein as yet found. William Beal, Geologist and Mining PngP The importance of the Plumbago mine to the Company can...
This file has been superseded by Wales rock strata, William Smith.png. It is recommended to use the other file. Please note that deleting superseded...
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