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Fascinating to learn that limestone blocks were taken from glacial moraines over there. That would befuddle any of us glacial geologists doing stone counts on the moraines for provenance studies! Woody Thompson Maine Geological Survey -----Original Message----- From: mining-history [mailto:[log in to unmask]] On Behalf Of Mike Gill Sent: Saturday, August 31, 2013 5:31 AM To: [log in to unmask] Subject: Surface signature of Bell pits >David Johnston has put forward the theory that in non limestone areas limestone rocks in the glacial till were mined/quarried/hushed Graham - it's not a theory, there are plenty of examples of all three in the area between Bingley and Burnley - usually taken from moraines. So it depended on what geology the glacier(s) had passed over, as opposed to what was under the immediate area. Mike If you need to leave the list, send the following message to [log in to unmask] - leave mining-history --------- If you need to leave the list, send the following message to [log in to unmask] - leave mining-history ---------