Mariana Minerals has announced the resumption of mining operations at the Copper One project in south-eastern Utah, US. The reopening signifies a notable development in mining as Copper One becomes the first global site to utilise autonomous tools across mining, refining and project execution, all managed by a single operating system. Mariana took control of the 10,000-acre site, known for producing high-purity copper cathode since 2009, following its acquisition of Lisbon Valley Mining Company in the f ...