About Us

Oyu Tolgoi is a copper mine in the Umnugovi aimag of Mongolia, approximately 550 kilometres south of the capital Ulaanbaatar. It holds one of the largest high-grade copper deposits in the world. Underpinned by our core value of safety, Oyu Tolgoi creates value by mining, processing and exporting copper, gold, and other minerals to international …

Oyu Tolgoi partners reach comprehensive agreement and …

Project budget, funding and agreements. As part of a comprehensive package, TRQ will waive the $2.4 billion 1 EOT carry account loan in full, comprising the …

Oyu Tolgoi Gold and Copper Project, Mongolia

The series of deposits discovered by Turquoise Hill Resources at Oyu Tolgoi and on the adjoining Shivee Tolgoi joint-venture property during the past six years stretch across 6.6km, and have a total proven and probable reserves of 1.45 billion tonnes graded at 0.86% Cu, 0.30g/t Au and 1.97g/t Ag as of December 2015.

Stakes high for Rio Tinto, Mongolia as Oyu Tolgoi talks loom

Rio Tinto has repeatedly said the underground expansion is its most important growth project. Once completed, Oyu Tolgoi will churn out 480,000 tonnes of …

Rio Tinto confirms development capital and timeline for Oyu Tolgoi …

Oyu Tolgoi is jointly owned by the Government of Mongolia (34 per cent) and Turquoise Hill Resources (66 per cent, of which Rio Tinto owns a controlling interest of 50.8 per cent). Rio Tinto has been the manager of the Oyu Tolgoi project since 2010. The open-pit mine was completed in less than 24 months and production started in 2013.

Oyu Tolgoi prepares concentrator for higher grades

The mill concentrate capacity from 2024 to 2025 needs to support increased volumes of high grade underground ore which involves a brownfield concentrator …

Press release: OYU TOLGOI Q4 2023 PERFORMANCE RESULTS

Press release: OYU TOLGOI Q4 2023 PERFORMANCE RESULTS. Ulaanbaatar, Mongolia – Oyu Tolgoi released its latest performance scorecard highlighting key performance metrics for the fourth quarter of 2023 and provided an update on the underground mine production.. Oyu Tolgoi continues the ramp-up of the underground …

Oyu Tolgoi partners reach comprehensive agreement and …

ULAANBAATAR, Mongolia.--(BUSINESS WIRE)-- Rio Tinto, Turquoise Hill Resources (TRQ) and the Government of Mongolia have reached an agreement that will move the …

Our Company

Oyu Tolgoi LLC is a Mongolian company, jointly owned by Erdenes Oyu Tolgoi LLC on behalf of the Government of Mongolia (34 per cent) and Rio Tinto (66 per cent). Rio …

Oyu Tolgoi announces Q4 2021 performance results

Located in the South Gobi, Oyu Tolgoi commenced shipment of product to customers in July 2013. Oyu Tolgoi is managed by Rio Tinto, which is investing global expertise and cutting-edge technology to help develop Mongolia's mining industry and ensure Oyu Tolgoi is one of the world's most advanced mines. For Oyu Tolgoi, nothing matters more ...

Rio Tinto cuts reserves at Oyu Tolgoi as costs rise

Oyu Tolgoi (OT) is Rio's biggest copper growth project but has faced geological challenges. In July last year, Rio estimated the project's capital cost at $6.5 billion to $7.2 billion, as much ...

Our Company

Oyu Tolgoi LLC is a Mongolian company, jointly owned by Erdenes Oyu Tolgoi LLC on behalf of the Government of Mongolia (34 per cent) and Rio Tinto (66 per cent). Rio Tinto also manages Oyu Tolgoi on behalf of the partnership.Oyu Tolgoi is led by a Management Team of experts in all aspects of the mining business, and this team drives the strategic …

Oyu Tolgoi Gold and Copper Project, Mongolia

An integrated development plan (IDP) suggests that the Oyu Tolgoi Mine will be capable of average annual production in excess of one billion pounds of copper …

Rio Tinto offers $2.7bn to buy Turquoise Hill stake in Oyu Tolgoi …

Once the underground project is complete, Oyu Tolgoi will be one of the world's biggest copper mines, with production in its early years of about 500,000 tonnes per year, just as demand for the ...

Oyu Tolgoi communities

Between 2010 and 2021, Oyu Tolgoi spent $13.4 billion in-country in the form of salaries, payments to Mongolian suppliers, taxes, donations and other payments to the Government of Mongolia. Since 2011, Oyu Tolgoi has developed and implemented policies to create a supply chain in Mongolia with a particular focus on the South Gobi region.

Paper: Oyu Tolgoi: engineering a Mongolian caving dynasty

Abstract: Oyu Tolgoi, located in the South Gobi region of Mongolia, is a world-class mining and processing complex jointly owned by the Government of Mongolia (34%) and Turquoise Hill Resources (66%). Rio Tinto owns 50.8% of Turquoise Hill Resources and is the Manager. Rio Tinto provides extensive and critical management services and support for …

Rio Tinto's $6.7bn Oyu Tolgoi to begin production in 2022

Oyu Tolgoi mine is expected to produce over 480,000t of copper per annum from the open pit and underground on average from 2028 to 2036, compared to 146,300t last year. Rio Tinto Copper & Diamonds chief executive Arnaud Soirat said: "We now have a pathway to bring the underground project into production, which will unlock the most …

Rio Tinto confirms development capital and timeline …

Oyu Tolgoi is amongst the safest operations and is also one of the most water-efficient mines in the world, with average water use of 0.35 cubic metres of water per tonne (m. 3/t ) of ore processed in 2019 (global average 1.22m3/t). The water used by Oyu Tolgoi comes from a deep and saline aquifer and has no impact on drinkable

Sustainability

Oyu Tolgoi maintains a dedicated national procurement policy focused on promoting and developing a safe and sustainable local supply chain, which includes the "Made in Mongolia" strategy. Between 2010 and the second quarter of 2021, Oyu Tolgoi spent US$744 million on procurement from the Umnugovi province. And in the first half of …

Turquoise Hill is expanding its Oyu Tolgoi mine in Mongolia …

The Oyu Tolgoi Investment Agreement and companion Shareholders' Agreement establish the framework for the development and operation of Oyu Tolgoi. Learn More. Technical Report. Turquoise Hill's latest NI 43-101 technical report. Learn More. Geology. Overview of geology in the Oyu Tolgoi region ...

History of Oyu Tolgoi

Power line handed over to the Government of Mongolia 10//2015. Oyu Tolgoi transfers major power line asset to government of Mongolia. Oyu Tolgoi company signed two major agreements with the National Power Transmission Grid company to transfer and maintain the 96 km power line, built and owned by the company, running …

Oyu Tolgoi to pursue international arbitration

On 16 January, 2018, Oyu Tolgoi received a tax assessment for approximately $155 million from the MTA relating to an audit on taxes imposed and paid by Oyu Tolgoi between 2013 and 2015. In January 2018, Oyu Tolgoi paid an amount of $4.8 million to settle unpaid taxes, fines and penalties for accepted items.

Major Mines & Projects | Oyu Tolgoi Mine

Oyu Tolgoi mine is one of the world's largest copper-gold mines. Rio Tinto delivered first sustainable underground production from Panel 0 in March 2023. Oyu Tolgoi underground spend expected to be complete by end-2025. The commissioning of infrastructure for ramp-up to full capacity remains on target: Rio Tinto expect shafts 3 and 4 and the ...

About Us

Oyu Tolgoi is a copper mine in the Umnugovi aimag of Mongolia, approximately 550 kilometres south of the capital Ulaanbaatar. It holds one of the largest high-grade copper …

Mongolia

Oyu Tolgoi is one of the largest known copper and gold deposits in the world Oyu Tolgoi communities . Together with government and local organisations, Oyu Tolgoi is committed to strengthening relationships with local communities …

Rio Tinto: the modern, safe, and sustainable Oyu Tolgoi mine

The Oyu Tolgoi mine, located in the South Gobi region of Mongolia, is one of the most modern, safe and sustainable mining projects in the world and Rio Tinto is one of its major stakeholders. The open-pit mine was established in 2011 and began processing copper two years later, with its current stakeholders being the government of Mongolia …

US regulator examines Rio Tinto whistleblower claims over Oyu Tolgoi

Rio was informed of problems at Oyu Tolgoi by a contractor early in 2019. Internal reports issued to Rio by Jacobs Engineering Group — and seen by the Financial Times — show how a series of ...

Sustainability

Oyu Tolgoi maintains a dedicated national procurement policy focused on promoting and developing a safe and sustainable local supply chain, which includes the "Made in Mongolia" strategy. Between 2010 and the second …

Oyu Tolgoi Profile

Oyu Tolgoi is a copper mine in the Umnugovi aimag of Mongolia, approximately 550 kilometres south of the capital Ulaanbaatar. It holds one of the largest high-grade copper …

Turquoise Hill Announces Start of Oyu Tolgoi Underground …

Oyu Tolgoi. At peak production, OT is expected to operate in the first quartile of the copper cash cost curve 3. OT is expected to produce around 500,000 tonnes of copper per year on average from ...