RE:RE:Rio Annual ReportWhy yes, Metal, glad you asked. From page 11 of the same report:
"We have a strong portfolio of exploration projects with activity in 18 countries across seven commodities in early exploration and studies stages, reflected in our pre-tax central spend of $257 million. All projects have followed government COVID-19 requirements, while focusing on protecting the wellbeing and health of local communities. In 2021, we continued to prioritise our exploration portfolio, with a particular focus on copper projects in Australia, Canada, United States, Kazakhstan and Zambia and increased activity on greenfield nickel projects in Canada and Finland. We continue to partner with other companies in all regions where we explore: examples are our agreement with KoBold Metals for copper and nickel exploration and our agreement with Western Copper and Gold Corporation, where we made a strategic investment to advance exploration on the Casino copper-gold project located in Yukon, Canada. We also signed a mineral investment contract with the Republic of Angola and Endiama to explore for diamonds, and continued mine-lease exploration at our managed businesses including Pilbara Iron in Australia and Diavik in Canada. We renewed our exploration technology"