Reference

Common country-profile abbreviations and units.

Mathematical notation, metric prefixes, and conversion factors.

Cross-reference list of place names with corresponding country entries and coordinates.

Appendix B organization and group index with acronyms, summaries, and website links where available.

Strategic materials are mineral commodities that are essential to national security and economic resilience, where import dependence can create supply risk during shocks.

Classes: Compounds · Metals · Precious Metals · Non-Metals · Rare Earth Elements

Independence statement, source coverage, and update policy.