Those are always a comparison based on metal values per pount or some sort of actual metrics, not the top price in the stock. I guess at the very least I wanted to express it as a meaningless number for anyone reading.
It's not meaningless...
I was taking the value that the market had ascribed to each stock at the height of the metal prices this past few years, then looked at how that compared to the actual buyout value of the one stock today. The market presumably priced the stocks based on metal values per pound and other factors such as location or capex, etc. It's just a shortcut to get a sense of where we would stand in comparison.
Why don't you come up with something better?