The goal of a mineral supply agreement is that countries that have limited access to the raw materials needed to transition to a green economy are not left behind.
The Panguna mine was operated by BCL, majority-owned by Rio Tinto, for 17 years from 1972 until 1989, when operations were suspended due to an uprising.
The move would mark a novel approach, as the US and EU would seek to use tariffs -- usually employed in trade disputes -- to further their climate agenda.