Silver Bull Announces the Start of a 2000 Meter Underground Diamond Drill Program at the Sierra Mojada Project, Coahuila, Mexico https://globenewswire.com/news-release/2017/08/30/1104088/0/en/Silver-Bull-Announces-the-Start-of-a-2000-Meter-Underground-Diamond-Drill-Program-at-the-Sierra-Mojada-Project-Coahuila-Mexico.html August 30, 2017 05:59 ET | Source: Silver Bull Resources, Inc.