Webster will replace retiring CFO Darryl Jones on June 1, who will remain as a consultant, while Stifano will fill the board place of the resigning Stephen Silbernagel, who will continue on as a board advisor.
Webster was most recently vice president of finance at Dominion Diamond Corp, where he worked for more than a decade.
Stifano is currently CEO of Cordoba Minerals and has also held a number of senior executive positions, including at Mega Precious Metals, Lake Shore Gold and Ivernia, during his 15 years' experience with exploration, development and producing companies.