region Brockman 4 is located approximately south of the
Brockman 2 mine. The mine, which cost to build, was initially scheduled to produce 22 Mt annually, , the ore body is approximately long and up to wide, comprising the hills to the south of the Boolgeeda Creek Valley. Mining incorporates a fleet of fifteen
Komatsu 830E haul trucks. The ore is processed on site in the plant to produce lump (6mm) and fines (<6mm) product. There is a primary
jaw crusher, two secondary
cone crushers, a six bin screening building and a 1.2 Mt capacity stockyard. Stockpiled ore is loaded onto rail and then transported to the coast through the
Hamersley & Robe River railway, where it is loaded onto ships. The mine's workforce is on a
fly-in fly-out roster. Brockman 4 was estimated to have a mine life of 20 years. It was officially opened on 2 September 2010. Rio Tinto allocated a further in early December 2010, to expand the mine as well as develop its Western Turner Syncline project, with the aim of increasing the Pilbara production to 283 Mt per annum by late 2013. The expansion would make B4 Rio Tinto's second-largest mine in the Pilbara. ==References==