Tinka announces new step out holes extend zinc at South Ayawilca by 200 metres and high-grade silver highlights new style of zinc mineralization https://finance.yahoo.com/news/tinka-announces-step-holes-extend-110000822.html CNW GroupJuly 17, 2017 22.8 METRES GRADING 8.4% ZINC IN HOLE A17-071, MINERALIZATION REMAINS OPEN 11.5 METRES GRADING 780 GRAMS PER TONNE SILVER + 5.2 % ZINC+LEAD IN HOLE A17-072