GR Silver Mining CEO Marcio Fonseca was an executive with SilverCrest Mines at the time when the company spun-out SilverCrest Metals in late 2015. Through discovery, SilverCrest Metals’s share price has risen about 130-fold in past four years. It is hard to beat the returns that a successful silver junior company can provide. And its exactly this type of out-sized gain that Marcio is now trying to provide to GR Silver shareholders.