Rio Tinto funds initial underground development at Kennecott copper ops
2022-09-27 Rio Tinto has approved a $55 million investment in development capital to start underground mining and expand production at its Kennecott copper operations in Utah, USA. Underground mining will initially focus on an area known as the Lower Commercial Skarn (LCS), which will deliver a total of around 30,000 t of additional high-quality mined […]