Not meaningless, but you are saddled with the task of recovering that metal.

How you do and what you achieve is that dose of realty that you speak of.

Personally I like to know the bits and pieces and sum it up myself.

So in situ is helpful for me as a start. Then i can go and find out what operational/processing, office overhead, taxes etc. might be.

Every bit helps. Many thanks to all, Ed.