[Bob Moseley (RIP)]

Morning Ralph (here at least) - Andrew Westacott's article on his site on this subject has certainly demistifyed the whole procedure for me. In fact eminating from that I will be changing some of my procedures and building a more efficient and safer de-ruster.

And as a general comment, here with Ralph, we have an expert in another field, namely science, upon whom we can draw advice from. Move over Wikipedia.

Bob