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On Deep Mining, and the Mineral-Bearing Strata of the South-West of Ireland1

Published online by Cambridge University Press:  01 May 2009

Samuel Hyde Esq
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Type
Supplement to the Geological Magazine
Information
Geological Magazine , Volume 7 , Issue 71 , May 1870 , pp. 241 - 252
Copyright
Copyright © Cambridge University Press 1870

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Footnotes

1

Read before the Geological Society of London, February 23rd, 1870.

References

page 242 note 1 Mem. Geol. Surrey. Explanations ef sheets 200–2–3–4–5, etc., County Cork.

page 243 note 1 Mem. Geol. Survey. Explanation to accompany sheets 200–3–4–5 of maps of the Geological Surrey of Ireland, County Cork.

page 246 note 1 It may be mentioned that the so-called No. 2 Big-ben, at the 198-fathom level, is about 15 feet in width, and is extremely rich in the ores of copper at this depth; the specimens exhibited on the table were recently taken from that level, and there is nothing in the aspect of the lode, either in its course or depth, to show diminution of produce or yield. It may not be out of place here to state also that the Bearhaven mines are said to have returned upwards of £2,000,000 sterling since commencing operations; Ballycummisk, situated in the area under description, £50,000; and Coosheen £22,000, the latter from operations above the adit.

page 251 note 1 Nos. 200, 203–5, 199, 1861.