For most strategic minerals the supply-chain risk isn't at the mine — it's at the refinery. Pick a mineral and toggle the mined and refined layers to compare, country by country, where ore comes out of the ground and where it is turned into usable material.
Take Africa: in 2024 it mined about 77% of the world's cobalt but refined under 2%, down from about 27% in 2000 when Congolese and Zambian refineries were still running (BGS). The OECD's 2026 regional review finds the same pattern across the continent's critical minerals: 24% of Africa's critical-mineral exports leave raw and 72% semi-processed. Switch on Africa as one bloc to compare its share at each stage, for any mineral and year.