be continued until the basic demand is met, which is the expulsion of Rio Tinto from Serbia and the adoption of a law banning lithium exploitation in Serbia". In December 2021, Rio Tinto said it was considering the concerns of residents in western Serbia after Loznica's municipal assembly scrapped a plan to allocate land for a lithium project. Misplaced radioactive capsule In January 2023, the company announced that it had misplaced a capsule of radioactive material that was being transported from their Gudai-Darri mine in Western Australia. The capsule is a 8 by 6 mm cylinder containing a 19-gigabecquerel caesium 137 ceramic source. It has the capability of causing serious illness if it is not handled correctly. According to the company, the capsule was lost somewhere between Newman and Perth, a distance of 1,400km. The company has already begun an investigation into the disappearance and are working alongside authorities. Later the same month the capsule was recovered by investigators and verified by the Australian Defense Forces. Environment Mining Rio Tinto has been widely criticised by environmental groups and at least one national government for the environmental impacts of its mining activities. The most high-level environmental criticism to date has come from the government of Norway, which divested itself from Rio Tinto shares and banned further investment due to environmental concerns. Claims of severe environmental damages related to Rio Tinto's engagement in the Grasberg mine in Indonesia led the Government Pension Fund of Norway to exclude Rio Tinto from its investment portfolio. The fund, which is said to be the world's second-largest pension fund, sold shares in the company valued at (US$855 million) to avoid contributing to environmental damages caused by the company. Rio Tinto disputes the claims of environmental damage at the Grasberg mine, and states that the company has long maintained an excellent record on environmental issues. After the former Panguna copper and gold mine in Bougainville, Papua New Guinea, which was abandoned by Rio Tinto in 1989, caused flooding, pollution of water wells and river poisoning, residents of the region filed a request for investigation with the Australian government in September 2020. As part of a rider of the National Defense Authorization Act, the United States agreed in 2014 to hand over Oak Flat in Arizona to a joint venture of Rio Tinto and BHP Billiton to build the Resolution Copper mine. The proposal has faced significant backlash