not my job Hammer!Do your own homework. You might want to start with a company called Arequipa Resources Ltd. that sold out to Barrick for $1.1 billion in or around 1996. Look at their "average" grades and then, most importantly look at the price of copper at the time. Then think about your statement about what is "economic".
As you do your homework you will find companies that are mines today that only had a sniff in two holes after drilling 30. There are more examples, but who knows what your real agenda is. Doubtful it's about what this deal really has or worth. For all I know, you are shorting ASD.