TSX-V-listed Tinka Resources has garnered positive results from a preliminary economic assessment (PEA) for its 100%-owned Ayawilca Zinc Zone project in central Peru. The PEA estimates an after-tax net present value (NPV) of $363-million and a pre-tax NPV of $609-million using metal prices of $1.20/lb of zinc, $18/oz of silver and $0.95/lb of lead on a 100% equity basis.
