Tinka drills 52 metres at 10 % zinc and 15 metres at 20 % zinc at South Ayawilca http://www.newswire.ca/news-releases/tinka-drills-52-metres-at-10--zinc-and-15-metres-at-20--zinc-at-south-ayawilca-617937113.html VANCOUVER, April 3, 2017