1. Gold (Au): Used in jewelry, electronics, dentistry, and other applications.
2. Copper (Cu): Used in wiring, plumbing, and construction materials.
3. Iron Ore (Fe): Used to produce steel, a major component of buildings, vehicles, and machinery.
4. Phosphate Rock (PO4): Used in fertilizers and other agricultural applications.
5. Coal (C): Used as a fuel source for electricity generation and industrial processes.