Tinka Drills 26 Metres Grading 10% Zinc At Ayawilca And Receives Approval Of Drill Permit For 2020-2021 Work Programs https://www.tinkaresources.com/news/tinka-drills-26-metres-grading-10-zinc-at-ayawilca-and-receives-approval-of-drill-permit-for-2020-2021-work-programs November 25th, 2019