Robert Waterhouse refers to the section of 16th C. wooden pump column at Geevor as being from a 'rag and chain' pump. We've always interpreted it as a piston -type pump as in Agricola. I'd be interested in any further thoughts. Bill Lakin Chair of Trustees Pendeen Community Heritage Geevor Tin Mine Pendeen Cornwall TR19 7EW 01736 788662 www.geevor.com GEEVOR - THE BIGGEST MINING HISTORY SITE IN THE UK