Rescuers use hammer and chisel to free trapped Caver-UK
Posted: Sep 12, 2014 8:13 pm
http://www.grough.co.uk/magazine/2014/09/13/rescuers-use-hammer-and-chisel-to-free-trapped-ingleborough-caver
I'm curious what plugs and feathers are guess it's off to Wikipedia...
Ahh here we go
wedges and shims- http://en.wikipedia.org/wiki/Plug_and_feather
I'm curious what plugs and feathers are guess it's off to Wikipedia...
Ahh here we go
wedges and shims- http://en.wikipedia.org/wiki/Plug_and_feather