Silver Bull Intersects 6 Meters of Sulphide Mineralization Grading 802g/t Silver, 5.87% Zinc, & 3.3% Copper, on the Sierra Mojada Project, Coahuila, Mexico http://www.silverbullresources.com/s/news.asp?ReportID=816954 VANCOUVER, British Columbia, Feb. 21, 2018