31-03-2011, 12:15 AM
Jack,
I don't think we know either of these numbers precisely... perhaps the steel installed might be able to be accurately established, but I doubt the recovered steel weight can be accurately established.
But your concept is good.
I don't think we know either of these numbers precisely... perhaps the steel installed might be able to be accurately established, but I doubt the recovered steel weight can be accurately established.
But your concept is good.