Dear Peter,
I have checked Tredinnick (Mines of Cornwall & Devon, 1857) and Williams
(Cornwall & Devon Mining Directory 1862), and can find no ref. to these
mines.
Williams lists a Fursdon Mine, and covers the Districts of Tavistock,
Okehampton, Christow, Newton Abbot, Ashburton, Plympton, and South Molton,
but still no mention of the required mines.
Might I suggest the Devon & Somerset Min.Stats by Roger Burt et al.
Regards, Bernard.
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