Luke Tonkin to step down as CEO of Vault Minerals, shares in the gold miner surge on share buy-back admin 4 hours ago Latest News Comments Off on Luke Tonkin to step down as CEO of Vault Minerals, shares in the gold miner surge on share buy-back 3 Views Vault Minerals has flagged the departure of veteran gold mining chief Luke Tonkin while pulling the trigger on a plan to inflate its share price. Share Facebook Twitter Stumbleupon LinkedIn Pinterest