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Rio Tinto

is the world's third largest mining and exploration company, based in England and Australia. Its major products include aluminum, copper, diamonds, energy products, gold, industrial materials and iron ore.

 

 

BHP Billiton

is a diversified natural resources company. The Company is engaged in extracting and processing minerals, oil and gas from its production operations located primarily in Australia, the Americas and southern Africa.

 

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Vale

is a diversified mining multinational corporation and one of the largest logistics operators in Brazil. In addition to being the second-largest mining company in the world, Vale is also the largest producer of iron ore, pellets, and second largest of nickel.