[Default] On Thu, 30 May 2013 21:15:42 +0000,"Crispin Pemberton-Pigott" <crispinpigott at gmail.com> wrote: >Dear Art > >The people to talk to are the reef repair and conservation groups. I have a friend in America who is involved with this sort of thing, abandoned oil rigs to reefs. Dana is a sibling of a denizen of [stoves] ;-). AJH