Brazil's Vale S.A. is one of the biggest metal and mining companies in the world. Its main activities include iron ore, alumina and bauxite production; sea and rail transport logistics; and hydroelectric generation. The company also mines or produces manganese, ferroalloys, aluminum, gold, kaolin, potash, fertilizers, phosphates, silver and copper. In addition, Vale carries out mineral exploration in 11 countries worldwide. Through its subsidiaries, it has investments in the energy, steel and logistics sectors. In the latter, the company has a network integrating mines, railroads, ports and ships, which also provide services to third parties. Vale is a global company with more than 100,000 employees, and offices in Brazil, the US, Chile, Argentina, Australia, Canada, China, Japan, India, Singapore, South Korea, Switzerland and the UK, among others.