Rio Tinto Group

History

Formation

Since antiquity, a site along the Río Tinto in Huelva, Spain, has been mined for copper, silver, gold and other minerals. Around 3000 BC, Iberians and Tartessians began mining the site, followed by the Phoenicians, Greeks, Romans, Visigoths and Moors. After a period of abandonment, the mines were rediscovered in 1556 and the Spanish government began operating them once again in 1724.

However, Spain's mining operations there were inefficient, and the government itself was otherwise distracted by political and financial crises, leading the government to sell the mines in 1873 at a price later determined to be well below actual value. The purchasers of the mine were led by Hugh Matheson's Matheson & Company, which ultimately formed a syndicate consisting of Deutsche Bank (56% ownership), Matheson (24%) and the civil engineering firm Clark, Punchard and Company (20%). At an auction held by the Spanish government to sell the mine on 14 February 1873, the group won with a bid of £3.68 million (ESP 92.8 million, equivalent to ~£519.3 million as of September 2026). The bid also specified that Spain would permanently relinquish any right to claim royalties on the mine's production. Following purchase of the mine, the syndicate launched the Rio Tinto Company, registering it on 29 March 1873. At the end of the 1880s, control of the firm passed to the Rothschild family, who increased the scale of its mining operations.

20th century expansion and development

Following their purchase of the Río Tinto Mine, the new ownership constructed a number of new processing facilities, innovated new mining techniques, and expanded mining activities.

During the first years of the company's operation in Spain, the company practiced open-air pyrite calcination in blast furnaces. The toxic fumes released by this process had a negative impact on the farmland and the local agriculturists, which led to the company's workers and some local anarchists coming together to protest against this practice. On 4 February 1888, several thousand rank and file—agriculturalists, anarchists and mineworkers—marched to the Río Tinto town hall (ayuntamiento) to deliver their petitions to the mayor. The civil guards, under perceived threat of mob violence, fired on the crowd, killing at least 13 and injuring 35.

From 1877 to 1891, the Río Tinto Mine was the world's leading producer of copper.

From 1870 through 1925, the company was inwardly focused on fully exploiting the Río Tinto Mine, with little attention paid to expansion or exploration activities outside of Spain. The company enjoyed strong financial success until 1914, colluding with other pyrite producers to control market prices. However, World War I and its aftermath effectively eliminated the United States as a viable market for European pyrites, leading to a decline in the firm's prominence.

The company's failure to diversify during this period led to the slow decline of the company among the ranks of international mining firms. However, this changed in 1925, when Sir Auckland Geddes succeeded Lord Alfred Milner as chairman. Geddes and the new management team he installed focused on diversification of the company's investment strategy and the introduction of organisational and marketing reforms. Geddes led the company into a series of joint ventures with customers in the development of new technologies, as well as exploration and development of new mines outside of Spain. Between 1925 and 1931, Geddes recruited two directors: JN Buchanan (finance director) and RM Preston (commercial director), as well as other executives involved with technical and other matters.

The company's first major acquisition occurred in 1929, when the company issued stock for the purpose of raising 2.5 million pounds to invest in Northern Rhodesian copper mining companies, which was fully invested by the end of 1930. The Rio Tinto company consolidated its holdings of these various firms under the Rhokana Corporation by forcing the various companies to merge.

Early 21st century

In 2000, Rio Tinto acquired North Limited, an Australian company with iron ore and uranium mines, for $2.8 billion. The takeover was partially motivated as a response to North Limited's 1999 bid to have Rio Tinto's Pilbara railway network declared open access. The Australian Competition & Consumer Commission regulatory body approved the acquisition in August 2000, and the purchase was completed in October of the same year. That year, Rio Tinto also bought North Limited and Ashton Mining for US$4 billion, adding additional resources in aluminium, iron ore, diamonds and coal. In 2001, it bought (under Coal & Allied) the Australian coal businesses of the Peabody Energy.

In 2000, Rio Tinto faced a federal lawsuit on behalf of Papua New Guinea due to the harm the company's mining operations at the Panguna Mine had to the environment for decades. Local communities filed this suit claiming that the local Kawerong-Jaba river delta was used as a dumping site for "more than one billion tons of mine waste". According to the lawsuit, the citizens are claiming that the mining giant used harmful chemicals and bulldozers to destroy the environment and specifically the rainforest and used their waterways as a dumping site for the chemicals and runoff caused by their mining operations.

On 14 November 2007, Rio Tinto completed its largest acquisition to date, purchasing Canadian aluminium company Alcan for $38.1 billion, as of 2014, "the largest mining deal ever completed". Alcan's chief executive, Jacynthe Côté, led the new division, renamed Rio Tinto Alcan with its headquarters situated in Montreal.

Activity in 2008 and 2009 was focused on divestments of assets to raise cash and refocus on core business opportunities. The company sold three major assets in 2008, raising about $3 billion in cash. In the first quarter of 2009, Rio Tinto reached agreements to sell its interests in the Corumbá iron ore mine and the Jacobs Ranch coal mine, and completed sales of an aluminium smelter in China and the company's potash operations, for an additional estimated $2.5 billion.

On 5 July 2009, four Rio Tinto employees were arrested in Shanghai for corruption and espionage. One of the arrested, Australian citizen Stern Hu, was "suspected of stealing Chinese state secrets for foreign countries and was detained on criminal charges", according to a spokesman for the Chinese foreign ministry. Stern Hu was also accused of bribery by Chinese steel mill executives for sensitive information during the iron ore contract negotiations.

Recent history

In April 2011, Rio Tinto gained a majority stake in Riversdale Mining. The Securities & Exchange Commission investigated a $3 billion impairment charge against Rio Tinto regarding the deal. Riversdale Mining was an Australian coal mining company with significant interests in Mozambique. Rio Tinto bought it for $2.9 billion in an all-cash deal. Two years later they wrote down the value of the assets by $3 billion. Following the impairment charge, which included an additional $11 billion in asset write-downs, chief executive officer of Rio Tinto, Tom Albanese stepped down from his post and left the company. Rio later sold the assets for $50 million.

In 2011, the company rekindled its interest in potash when it entered a joint venture with Acron Group to develop the Albany potash development, in southern Saskatchewan, Canada. Following an exploration program, Acron in a June 2014 statement described Albany as "one of the best potash development opportunities in the world".

On 13 December 2011, an independent arbitrator cleared the way for Rio Tinto, which had owned 49% of Ivanhoe Mines (now known as Turquoise Hill Resources), to take it over: he said the $16 billion Canadian group's "poison pill" defence was not valid. Ivanhoe had developed Oyu Tolgoi in Mongolia, one of the world's largest-known copper deposits. On 28 January 2012, Rio Tinto gained control of Ivanhoe Mines and removed the management.

The metals for the medals for the 2012 Summer Olympics were supplied from the Bingham Canyon Mine located in Utah and the Oyu Tolgoi mine in Mongolia, which caused uproar among many activist groups, especially in Utah due to their concern about the impact to the local cities. One person particularly bothered by this decision was the Commissioner of the London Games, Meredith Alexander, who quit her position and led a coalition of human rights and environmental groups during the "Greenwashed Gold Campaign".

In October 2013, Rio Tinto agreed to sell its majority stake in Australia's third-largest coal mine to Glencore and Sumitomo for a little over US$1 billion, as part of the firm's plans to focus on larger operations. Less than a year later, Rio Tinto rejected two merger proposals from Glencore, proffered in July and August 2014; the merger of Glencore and Rio Tinto would have created the world's largest mining company.

Subsidiaries

The company has operations on six continents, but is mainly concentrated in Australia and Canada, and owns its mining operations through a complex web of wholly and partly owned subsidiaries.

Energy Resources of Australia – 68.4%

Hathor Exploration – 100%

QIT-Fer et Titane – 100%

Dampier Salt – 68.4%

Iron Ore Company of Canada – 58.7%

Pacific Aluminum – 100%

Richards Bay Minerals – 74%

Corporate status

Rio Tinto is primarily organised into four operational businesses, divided by product type:

Iron ore

Aluminium – aluminium, bauxite and alumina

Copper & Diamonds – copper and by-products such as gold, silver, molybdenum and sulphuric acid, and the company's diamond interests

Energy & Minerals – uranium interests, industrial minerals such as borax, salt and titanium dioxide. The corporation previously held coal production assets.

These operating groups are supported by separate divisions providing exploration and function support.

Stock structure and ownership

Rio Tinto is structured as a dual-listed company, with listings on both the London Stock Exchange (symbol: RIO), under the name "Rio Tinto Plc", and the Australian Securities Exchange (symbol: RIO) in Sydney, under the name "Rio Tinto Limited". The dual-listed company structure grants shareholders of the two companies the same proportional economic interests and ownership rights in the consolidated Rio Tinto, in such a way as to be equivalent to all shareholders of the two companies actually being shareholders in a single, unified entity. This structure was implemented to avoid adverse tax consequences and regulatory burdens. To eliminate currency exchange issues, the company's accounts are kept, and dividends paid, in United States dollars.

Rio Tinto is one of the largest companies listed on either exchange. As such, it is included in the widely quoted indices for each market: the FTSE 100 Index of the London Stock Exchange, and the S&P/ASX 200 index of the Australian Securities Exchange. LSE-listed shares in Rio Tinto plc can also be traded indirectly on the New York Stock Exchange via an American Depositary Receipt. As of 4 March 2009, Rio Tinto was the fourth-largest publicly listed mining company in the world, with a market capitalisation around $134 billion. As of mid-February 2009, shareholders were geographically distributed 42% in the United Kingdom, 18% in North America, 16% in Australia, 14% in Asia and 10% in continental Europe.

In May 2025, Shareholders in Rio Tinto rebuffed calls from Palliser Capital for the global mining group to ditch its primary London listing and focus on Australia. More than 80% of investor votes cast at its annual general meeting on Thursday were made against the proposal, with just 19% in favour.

On 8 November 2007, rival mining company BHP Billiton announced it was seeking to purchase Rio Tinto in an all-share deal. This offer was rejected by the board of Rio Tinto as "significantly undervalu[ing]" the company. Another attempt by BHP Billiton for a hostile takeover, valuing Rio Tinto at $147 billion, was rejected on the same grounds. Meanwhile, the Chinese government-owned resources group Chinalco and the US aluminium producer Alcoa purchased 12% of Rio Tinto's London-listed shares in a move that would block or severely complicate BHP Billiton's plans to buy the company. BHP Billiton's bid was withdrawn on 25 November 2008, with the BHP citing market instability from the 2008 financial crisis.

Management

Under the company's dual-listed company structure, management powers of the Rio Tinto are consolidated in a single senior management group led by a board of directors and executive committee. The board of directors has both executive and non-executive members, while the executive committee is composed of the heads of major operational groups.

Board of Directors

Executive Directors

Dominic Barton, chairman

Simon Trott, chief executive

Non-Executive Directors

Megan Clark

Hinda Gharbi

Simon McKeon

Simon Henry

Jennifer Nason

Sam Laidlaw

Ngaire Woods

Rio Tinto engages professional lobbyists to represent its interests in various jurisdictions. In South Australia, the company in represented by DPG Advisory Solutions.

Operations

Rio Tinto's main business is the production of raw materials including copper, iron ore, bauxite, diamonds, uranium and industrial minerals including titanium dioxide, salt, gypsum and borates. Rio Tinto also performs processing on some of these materials, with plants dedicated to processing bauxite into alumina and aluminium, and smelting iron ore into iron. The company also produces other metals and minerals as by-products from the processing of its main resources, including gold, silver, molybdenum, sulphuric acid, nickel, potash, lead and zinc. Rio Tinto controls gross assets of $81 billion in value across the globe, with main concentrations in Australia (35%), Canada (34%), Europe (13%) and the United States (11%), and smaller holdings in South America (3%), Africa (3%) and Indonesia (1%).

Iron ore: Rio Tinto Iron Ore

The Australian operations of Rio Tinto Iron Ore (RTIO) comprises an integrated iron ore operations in the Pilbara, Western Australia. The Pilbara iron ore operations include 16 iron ore mines, four independent port terminals, a 1,700-kilometre rail network and related infrastructure. The corporation also has had a majority stake in Iron Ore Company of Canada since its 2000 hostile takeover of North Limited.

Copper and by-products: Rio Tinto Copper

Copper was one of Rio Tinto's main products from its earliest days operating at the Río Tinto complex of mines in Spain. Since that time, the company has divested itself from its original Spanish mines, and grown its copper-mining capacity through acquisitions of major copper resources around the world. The copper group's main active mining interests are Oyu Tolgoi mine in Mongolia, Kennecott Utah Copper in the United States, and Minera Escondida in Chile. Most of these mines are joint ventures with other major mining companies, with Rio Tinto's ownership ranging from 30% to 80%; only Kennecott is wholly owned. Operations typically include mining of ore through to production of 99.99% purified copper, including extraction of economically valuable by-products. Together, Rio Tinto's share of copper production at its mines totalled nearly 700,000 tonnes, making the company the fourth-largest copper producer in the world.

Rio Tinto Copper continues to seek new opportunities for expansion, with major exploration activities at the Resolution Copper project in the United States, Winu in Australia, and Oyu Tolgoi underground mine in Mongolia. In addition, the company is seeking to become a major producer of nickel, with exploration projects currently underway in the United States and Indonesia.

Although not the primary focus of Rio Tinto Copper's operations, several economically valuable by-products are produced during the refining of copper ore into purified copper. Gold, silver, molybdenum and sulphuric acid are all removed from copper ore during processing. Due to the scale of Rio Tinto's copper mining and processing facilities, the company is also a leading producer of these materials, which drive substantial revenues to the company.

Sales of copper generated 8% of the company's 2008 revenues, and copper and by-product operations accounted for 16% of underlying earnings.

Rio Tinto exclusively provided the metal to produce the 4,700 gold, silver and bronze medals at the London 2012 Olympic and Paralympic Games. This was the second time Rio Tinto had done so for Olympic medals, having previously provided the metals for the Salt Lake City 2002 Winter Olympics. Together, Rio Tinto's share of copper production at its mines totalled nearly 700,000 tonnes, making the company the fourth-largest copper producer in the world. Rio Tinto was the naming rights sponsor of Utah Soccer Stadium until 2022.

Aluminium

Rio Tinto consolidated its aluminium-related businesses into its aluminium product group (originally named Rio Tinto Alcan), formed in late 2007, when Rio Tinto purchased the Canadian company Alcan for $38.1 billion. Combined with Rio Tinto's existing aluminium-related assets, the new aluminium division vaulted to the world number-one producer of bauxite, alumina and aluminium. Aluminium division kept key leadership from Alcan, and the company's headquarters remain in Montreal.

Rio Tinto divides its Aluminium operations into three main areas—bauxite, alumina and primary metal. The Bauxite and Alumina unit mines raw bauxite from locations in Australia, Brazil and Africa. The unit then refines the bauxite into alumina at refineries located in Australia, Brazil, Canada and France. The Primary Metal business unit's operations consist of smelting aluminium from alumina, with smelters located in 11 countries around the world. The Primary Metal group also operates several power plants to support the energy-intensive smelting process.

The aluminium division has interests in seven bauxite mines and deposits, six alumina refineries and six speciality alumina plants, 26 aluminium smelters, 13 power plants and 120 facilities for the manufacture of speciality products. The acquisition of Alcan operations in 2007 substantially increased Rio Tinto's asset base, revenues and profits: in 2008, 41% of company revenues and 10% of underlying earnings were attributable to the aluminium division.

Uranium: Rio Tinto Energy

Rio Tinto Energy is a business group of Rio Tinto that was dedicated to the mining and sale of uranium. Rio Tinto's uranium operations were located at two mines: the Ranger Uranium Mine of Energy Resources of Australia and the Rössing uranium mine in Namibia. The unit is now focused on mine rehabilitation. The company was the third-largest producer of uranium in the world. According to Rio Tinto's website, the company instituted strict controls and contractual limitations on uranium exports, limiting uses to peaceful, nonexplosive uses only. Such controls are intended to limit use of the company's uranium production to use as fuel for nuclear power plants only, and not for use in the production of nuclear weapons. Rio Tinto Energy was responsible for 12% of revenues and 18% of underlying earnings in 2008.

Rio Tinto has divested or closed its remaining uranium operations since 2019. In 2019 it sold its remaining holdings in the Rössing uranium mine to China National Uranium Corporation Limited (CNUC) for an initial cash payment of $6.5 million plus a contingent payment of up to $100 million.

Mining finished at Ranger in late 2012 and the mine plant processed stockpiled ore until January 2021. Rio has tenure and access to the site, principally for rehabilitation activities, until 8 January 2026.

Diamonds: Rio Tinto Diamonds

Rio Tinto Diamonds operates two diamond mines: the Diavik Diamond Mine in the Northwest Territories of Canada (60% ownership) and the Murowa diamond mine located in Zimbabwe (78% ownership). Together, these two mines produce 20% of the world's annual production of rough diamonds, making Rio Tinto the world's third-largest producer of mined diamonds.

Rio Tinto formerly operated the Argyle Diamond Mine in Western Australia (100% ownership).

The diamond business unit's most advanced exploration project is the Falcon Project in Saskatchewan, Canada, where Rio Tinto owns 60% of the project in a joint venture with Star Diamond Corp. Rio Tinto Diamonds generated 1% of revenues and earnings for Rio Tinto in 2008.

Industrial minerals: Rio Tinto Minerals

Rio Tinto Minerals is a diverse business group with mining and processing interest in borates, salt and gypsum. Rio Tinto Borax, with operations in California, supplies nearly one-third of the world's annual demand for refined borates. The Minerals group is also majority owner of Dampier Salt, which produces over 9 million tonnes of salt and 1.5 million tonnes of gypsum annually from its three facilities in north-west Australia. Rio Tinto Minerals accounted for 6% of company revenues, and contributed 3% to earnings in 2008.

On 31 January 2010, the management of US Borax locked out its hourly workforce, replacing the workers with nonunion workers and managers from other Rio Tinto operations. The 560 International Longshore and Warehouse Union Local 30 members immediately began a fireside vigil that garnered national and international labour attention. ILWU filed several unfair labour practices against the company, including an illegal lock-out claim.

In 2024–2025 Rio Tinto won a bid to associate with Chile's National Mining Enterprise (ENAMI) in the lithium mining project of Salares Altoandinos.

Iron products and titanium: Rio Tinto Iron and Titanium

Titanium dioxide is mined at three locations: in Lac Allard Quebec Canada, South Africa and Mandena mine, Madagascar, and refined at QIT-Fer et Titane's Canadian facilities.

A media report in October 2013 revealed that the corporation plans to establish a fully automated railroad system for the transportation of iron ore across the Australian outback by 2015, thereby replacing the corporation's train drivers. The United Kingdom-based transport historian Christian Wolmar stated at the same time that the train drivers are most likely the highest-paid members of the occupation in the world at that time. As part of an overall strategy to increase profit margins, the corporation is spending US$518 million on the project.

Development of autonomous technologies

Rio Tinto is a global leader in the development of autonomous technologies for use in the mining sector. As of 2018, Rio Tinto's fleet of 80 autonomous Komatsu vehicles had moved over 1 billion tonnes of ore and waste material in Western Australia's Pilbara region.

Furthermore, in late 2017 Rio Tinto announced funding for their Koodaideri Mine in Western Australia, which Rio Tinto had dubbed their "intelligent mine."

Financial results

Rio Tinto's revenues and earnings have grown substantially in 2003–2010, with one of the largest increases attributable to the company's acquisition of Alcan in 2007. Although its operating margin is significantly affected by the market prices of the commodities it produces, it has remained profitable over its recent history.

Environmental issues

Grasberg Mine – Indonesia

Rio Tinto has been criticised by the government of Norway, which divested itself from Rio Tinto shares and banned further investment due to environmental concerns. Claims of severe environmental damages related to Rio Tinto's engagement in the Grasberg mine in Indonesia led the Government Pension Fund of Norway to exclude Rio Tinto from its investment portfolio. The fund, which is said to be the world's second-largest pension fund, sold shares in the company valued at 4.85 billion kr (US$855 million) to avoid contributing to environmental damages caused by the company. Rio Tinto disputes the claims of environmental damage at the Grasberg mine.

Resolution Copper Mine – Arizona, U.S.

As part of a rider of the National Defense Authorization Act, the United States government agreed in 2014 to hand over the Oak Flat sacred preserve in Arizona to a joint venture of Rio Tinto and BHP Billiton to build the Resolution Copper mine. The process entailed the transfer of 3,000 acres of federally owned preserve land to Rio in exchange for 4,500 acres of adjacent land in the area. Under the Biden administration, the proposal would have allowed for the purchase of nearly 600 acres by the town of Superior to expand its airport and develop new industrial and residential infrastructure. The proposal has been opposed by environmentalists and the Apache tribe, who argue that the project, if it goes forward, would collapse a region two miles (3.2 km) wide around Oak Flat into a sinkhole 1,100 feet (340 m) deep, destroying sacred burial grounds and ecologically sensitive land considered by several tribes to be home to their deities.

Carbon dioxide emissions

According to The Guardian, Rio Tinto is one of the top 100 industrial greenhouse gas producers in the world, accounting for 0.75 per cent of global industrial greenhouse gas emissions between 1988 and 2015. In 2016, Rio Tinto estimated to have produced 32 million tonnes of carbon dioxide equivalent in its own climate change report.