Olympic Dam, South Australia
Main shafts, 2009
|Year of acquisition||2005|
Olympic Dam is a mining centre in South Australia, Australia, located some 550 km NNW of Adelaide. It is the site of an extremely large iron oxide copper gold deposit producing copper, uranium, gold and silver. The site hosts an underground mine as well as an integrated metallurgical processing plant. It is the fourth largest copper deposit and the largest known single deposit of uranium in the world, though uranium represents only a minority of the mine's total revenue. There were plans to expand the mine, but this has now been postponed indefinitely following public protests and pending investigation of a "new and cheaper design".
The deposit was discovered by Western Mining Corporation in 1975 near Roxby Downs Sheep Station and started production in 1988. It now belongs to BHP Billiton, which acquired WMC Resources in 2005. The mine currently operates by an underground mining method called sublevel open stoping, using modern and highly productive mining equipment. The March 2005 mine production rate is an annualised 9.1 million tonnes making it one of Australia's larger mines. 2005 metal production is thought to be in excess of 220,000 tonnes of copper, 4500 tonnes of uranium oxide, plus gold and silver. The copper and uranium oxide are exported through Port Adelaide. Most of the mine workers live in the nearby towns of Roxby Downs and Andamooka. Regular flights to Olympic Dam Airport serve Olympic Dam.
The Olympic Dam mine uses 35 million litres of Great Artesian Basin water each day, making it the largest industrial user of underground water in the southern hemisphere. Water is pumped along an underground pipeline from two bore fields which are located 110 km and 200 km to the north of the mine. The salty bore water requires desalination before it is used. Contaminated water from mining operations is passed through a series of sealed ponds where it evaporates.
The high use of artesian water as a result of mine operations threatens areas of high ecological significance. In particular, the pumping of water from the bore fields has been linked to observations of reductions in flow or drying out in nearby mound springs. As mound springs are the only permanent source of water in the arid interior of South Australia a delicate yet intricate ecological balance has been established  with prolonged isolation causing the existence of many rare and endemic species.
In 2008, BHP Billiton completed a pre-feasibility study into the expansion of the mine's operations, with the first step of expansion scheduled for completion by late 2013. In December 2008, South Australia's Premier Mike Rann revealed advice from BHP Billiton that the project would proceed as an open-cut operation. On 10 October 2011, Federal Government approval for the mine expansion, which would have made it the world's largest open-cut mine, was given.
While being welcomed at the time by State and Federal governments as a major boost to the economy, the proposed expansion of mining operations did attract considerable criticism. In 2007, BHP Billiton attracted some public attention for delaying the release of its environmental impact statement for the Olympic Dam expansion, and for the company's response to inconsistencies in the scope and configuration of the proposed expansion. Environmental approval was granted by state and federal governments in October 2011.
In February 2012, Kevin Buzzacott legally challenged the Commonwealth Environment Minister Tony Burke's environmental approval of the Olympic Dam mine expansion. 'Uncle Kev' was represented by the Environmental Defenders' Office and appeared in the Federal Court in Adelaide on 3 and 4 April 2012. His case featured in the forthcoming documentary film "Cuttlefish Country".
In July 2012, more than 400 people joined a "Lizard's Revenge march" to the Olympic Dam site. The anti-nuclear activists, including Elder Kevin Buzzacott, protested against the mine expansion and the uranium industry. They say the company and the government have put short-term economic gain ahead of environmental and health concerns. Organiser Nectaria Calan said police harassed protesters, demanding identification and controlling access to and from their campsite.
In August 2012, BHP Billiton announced that the expansion was being postponed indefinitely pending investigation of a "new and cheaper design". The South Australian Mineral Resources and Energy Minister, Tom Koutsantonis in response to this announcement stated "they will be developed (and) it will bring a great deal of prosperity." However the Premier, Jay Weatherill, warned BHP "given that this is the second time they have disappointed South Australians, there can be no doubt that this community permission will come at a (greater) cost" next time.
See also 
- Indigenous nuclear campaigner wins national environment award
- Pigram, John J. (2007). Australia's Water Resources: From use to management. Collingwood, Victoria: CSIRO Publishing. p. 112. ISBN 9780643094420.
- Mudd, G. (2000). "Mound springs of the Great Artesian Basin in South Australia: a case study from Olympic Dam". Environmental Geology 39 (5). Retrieved 30 November 2012.
- Keane, D, 1997, The Sustainability of Use of Groundwater from the Great Artesian Basin, with Particular Reference to the South-Western Edge of the Basin and Impact on the Mound Springs, Environmental Engineering, RMIT, 76 p.
- Kinhill, 1997, Olympic Dam Expansion Project Environmental Impact Statement, Prepared for WMC (Olympic Dam Corporation) Pty Ltd by Kinhill Engineers Pty Ltd, May 1997, 500 p.
- $7bn BHP Billiton mine giant to go ahead: Mike Rann
- "Huge Olympic Dam mine expansion wins federal nod". ABC News (Australian Broadcasting Corporation). 10 October 2011. Retrieved 10 October 2011.
- Uranium mining and the question of corporate social responsibility
- Sarah Martin (16 July 2012). "Police accused over Olympic Dam protest". The Australian.
- South Australian History
- Infomine Minesites
- BHP Billiton
- An Analysis of BHP Billiton’s Olympic Dam Upgrade
- Social and Ecological Impact of Water Extraction for a Copper-Uranium Mine
- Olympic Dam Project on mining-technology.com