Australia produces 19 useful minerals in significant amounts, from over 350 operating mines. From these minerals, useful materials such as metals can be extracted. Australia is one of the world's leading producers of bauxite (aluminium ore), iron ore, lithium, gold, lead, diamond, rare earth elements, uranium, and zinc. Australia also has large mineral sand deposits of ilmenite, zircon and rutile. In addition, Australia produces large quantities of black coal, manganese, antimony, nickel, silver, cobalt, copper and tin. Caterpillar (CAT) is the world’s leading manufacturer of construction and mining equipment. A lot of the workers on these mines are FIFO ( Fly in- Fly out).