Mr Wardley your comments in response to Kelvin Lake are unjustified he maintains a web site for researchers like yourself. The exchange of a useful telephone numbers and contact address is very useful. This site is not just for Nerds like you but the whole range of Mining History, research, exploration (caving or otherwise) oh and of course that other thing enjoyment which you seem to want to curtail. As a hobby bookseller and that is all it is I provide short reviews of the latest volumes, which I know other members of mailbase find useful, they are not obliged to purchase them from me, Tony Oldham, Caving Supplies or whoever, I provide information and more detail for people if they want it. As a mine explorer, I find the contacts through mailbase useful as I do NAHMO don't knock information exchange, I suggest you go off and sulk in your academic mailbox Mike Moore %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%