Tinka Reports Additional Step-Out & Infill Drill Holes at Ayawilca and Highlights Upper Manto Discovery https://www.tinkaresources.com/news/tinka-reports-additional-step-out-and-infill-drill-holes-at-ayawilca-and-highlights-upper-manto-discovery Tinka Resources Limited Sep 18, 2018, 07:00 ET