Correct, that pps is just based off revenues though. Taxes, wages, debts, liabilities, etc aren't factored in. Still it's a pretty good estimate though. Check this out...
http://investorshangout.com/post/view?id=2179846 - a pps estimate in the near future if we get congress back up and mining goes well in ghana... I may have to slap the 2's today.