Tinka drills 48 metres grading 11.3 % zinc at South Ayawilca http://www.prnewswire.com/news-releases/tinka-drills-48-metres-grading-113--zinc-at-south-ayawilca-627197481.html Tinka Resources Limited 07:00 ET STEP-OUT DRILLING EXTENDS MINERALIZATION STRIKE LENGTH BY 500 METRES VANCOUVER, June 8, 2017