Answer:
Coal, gold, silver etc.
Step-by-step explanation:
North America is a big manufacturer of coal, which is mostly used in the energy sector.
Bauxite is a mineral that is used to make aluminum.
Iron and copper are two metals that are used in the development of infrastructure and a variety of other items.
Nickel is used to make steel, that is exported all over the globe by U.S. Companies.
The south west of the country is home to gold mines.