PPX Mining's Igor PFS Shows Pre-Tax 64% IRR (59% Post-Tax), $601/oz AuEq Cash Costs for PPX https://www.accesswire.com/529615/Igor-PFS-Shows-Pre-Tax-64-IRR-59-Post-Tax-601oz-AuEq-Cash-Costs-for-PPX Tuesday, December 4, 2018 7:30 AM