There is still a lot ground left to explore and find big new discoveries, said the CEO of Blackwolf Copper and Gold (CVE:BWCG), Rob McLeod.  On Friday McLeod recorded Kitco Roundtable with Mining Audiences Manager Michael McCrae, Kitco correspondent Paul Harris and editor Neils Christensen.There is a concern that precious metal supply may be constrained in the future without any big new gold projects. McLeod said there are still vast areas that are under-explored. Glaciers are receding, uncovering prospective ground. Technology is also helping find potential new targets.  "Are there still world-class discoveries can be made? Absolutely!," said McLeod. "Maybe you can look back in a hundred years and say... we're at peak discovery for new world-class deposits, but I think...there's still going to be a lot more that will be discovered."