The Koolyanobbing Operation – a collective term for the operating hematite and goethite iron ore deposits at Koolyanobbing, Mount Jackson and Windarling – comprises Cliffs' Asia Pacific Iron Ore business unit. It is located in Western Australia, approximately 54km north of Southern Cross.
Mining in the region began in the 1950s, with the operation being owned previously by BHP Billiton and Portman Iron Ore. Cliffs acquired Koolyanobbing from Portman in December 2008.
Ore is transported by road trains from the northernmost deposits to the crushing facility, where it is blended, crushed and screened into a direct lump and fines shipping product. This product is transported by rail approximately 583km to the Port of Esperance, on Australia’s southern coast, for shipment to customers.