BHP Billiton is one of the world's top producers of copper, silver, lead and uranium, and a leading producer of zinc. We provide base metal concentrates to custom smelters and copper cathodes to rod and brass mills and casting plants and uranium oxide to power utilities. We aim to become the pre-eminent supplier in base metals through capacity expansions, reliable supply and innovative solutions.

We have an excellent portfolio of large, low-cost mining operations with substantial growth opportunities. We have a number of expansion opportunities — both greenfield (new sites) and brownfield (developments on existing sites) — which are sufficient to allow us to expand copper production significantly through various projects.