Figure 1: Supply risk for 54 commodities with sufficient data for quantitative evaluation, for the years 2007–2018.

Figure 1. Supply risk for 54 commodities with sufficient data for quantitative evaluation, for the years 2007–2018.  Warmer (i.e., orange to red) shades indicate a greater degree of supply risk.  As indicated by the dashed horitonal line, 36 commodities with a recency-weighted mean supply risk greater than or equal to 0.40 are included on the list of critical minerals.  Leading producing countries for each commodity are listed.  (Source: Nassar, N.T., and Fortier, S.M., 2021, Methodology and technical input for the 2021 review and revision of the U.S. Critical Minerals List: U.S. Geological Survey Open-File Report 2021–1045, 31 p., https://doi.org/10.3133/ofr20211045.)