Rio begins drilling at Madison copper-gold project in Montana
Rio begins drilling at Madison copper-gold project in Montana Madison project site at dusk. Credit: American Pacific Mining Corp. Rio Tinto Group has commenced drilling at the Madison copper-gold project in Montana, with the first diamond core drill arriving on site this week and drilling the first targets. The property currently held by junior miner American Pacific Mining Corp (CSE: USGD). In 2019, Rio subsidiary Kennecott Exploration Company entered an earn-in with an option to joint venture agreement on the Madison property, under which it may spend $30 million to earn up to 70% interes...