is hopeful to come to terms with BHP Billiton in regards to using some of the company's rail infrastructure, the Goldsworthy railway, in the future. BHP, in late 2010, had agreed to a joint feasibility study into how an arrangement might work. Access to the rail networks by third parties is governed by the State Agreements Act. Westrail region Other mines connect to port using the state government-owned railways. Examples are Windarling Range and Koolyanobbing - from Koolyanobbing to the port of Esperance; Koolanooka and Mungada using a 60km spur line linking to the state network at Morawa; and Mt Gibson trucking to an ore loading siding at Perenjori. Ports In the Pilbara, iron ore is shipped from Port Hedland, Dampier and Cape Lambert. The latter two ports are exclusively used by Rio Tinto, while Port Hedland is used by BHP, FMG and Atlas Iron. Port facilities at Port Hedland consist of Nelson Point and Finucane Island, both BHP, and Herb Elliott Port, used by FMG. In Dampier, ore is shipped from Parker Point and East Intercourse Island. The non-Pilbara mines ship their ore out of other ports: Windarling Range ships from the port of Esperance; the Jack Hills, Koolanooka, Mungada and Mt Gibson mines ship from Geraldton. Projects BHP is currently spending A$1.85 billion on its Rapid Growth Project 4, aimed at increasing its annual iron ore output to 155 million tonnes. To achieve this, upgrades to both mines and port facilities are necessary. The project is scheduled for completion by 2010. As a follow-up, Rapid Growth Project 5, with a budget of A$4.8 billion, targets a further production increase of 50 million tonnes annually. Additionally to upgrades at the mines and ports, it will also include duplication of existing railway lines and is scheduled for completion in late 2011. The Jimblebar mine is part of another expansion project, launched in 2010 and aimed at increasing production from the Pilbara mines to 240 million tonnes of iron ore annually by 2013. The expansion of Jimlebar, together with an expansion of the inner harbour at Port Hedland and works on the duplication of rail tracks is estimated to cost A$2.15billion. The project is titled Rapid Growth Project 6. Rio Tinto declared its intent to expand the Hope Downs mine, spending a further A$1.78 billion on its new Hope Downs 4 project, scheduled to produce 15 million tonnes of iron ore