Tinka discovers new high grade Zinc Zone at Ayawilca 400 metre step-out hole hits 17.9 metres at 11.6 % Zn within a wider zone of 62.4 metres at 5.6 % Zn http://www.newswire.ca/news-releases/tinka-discovers-new-high-grade-zinc-zone-at-ayawilca-615454673.html VANCOUVER, March 6, 2017