or not of course. But it's a thought to bear in mind perhaps.
Thanks for your input. To be sure, there's all sorts around there. Hence my doubt (and subsequent request to ease my tortured understanding :) ).
Some of the mining is mapped here:
http://www.ancientmonuments.info/en28755-upper-merrivale-tin-blowing-and-stamping-m/osmap
Helen Harris in 'The Industrial Archaeology of Dartmoor' (1972, 2nd ed) makes reference to these blowing houses on the east bank, but these are further up the valley. The stones I saw are on the eastern bank of the Walkham, down by northern face of the old bridge. Interestingly (to me, anyway..) she notes that the stone for the 'new' Merrivale bridge came from Tor quarry (the big quarry behind the pub). Obvious, really...
I usually go to MAGIC, but the site defeats me. I can't get the countryside to stop still.
[EDIT] I have put th piccie up on the Merrivale Bridge Settlement page at http://www.themodernantiquarian.com/site/7367/merrivale_bridge_settlement.html#
Peace
Pilgrim
X