Gold : guarantee the value of currencies. Bar gold.

Industry the main ones being the glass, foundries, construction, ceramics, and the chemical industry.Silica in its finest form is also used as functional filler for paints, plastics, rubber.

Bauxite Used for Aluminum Production. Bauxite is the principal ore of aluminum.

Coal is a combustible black or brownish-black.

Coke is used as a fuel and as a reducing agent in smelting iron ore in a blast furnace.

It's ground to a fine powder and used as the binder in many cement products.

The primary use of iron ore is in the production of iron. Most of the iron produced is then used to make steel.

Gypsum uses include: manufacture of wallboard, cement, plaster, soil conditioning, a hardening retarder in portland cement.

Limestone is used as a building material, and to purify iron in blast furnaces. It's also used in the manufacture of glass, and of cement

Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels.

Widely used for car batteries, pigments, cable sheathing, weights for lifting, weight belts for diving.

Nickel-containing products possess better corrosion resistance, greater toughness, more strength at high and low temperatures.