East and West Tsankhi The Tsankhi section is the largest in the Tavan Tolgoi deposit, and there are plans to develop both East and West Tsankhi, although both developments have been surrounded by confusion and delays. There is often a misunderstanding that the title ‘Tavan Tolgoi’ refers to the Erdenes Tavan Tolgoi development in Tsankhi, since this is the largest and highest profile area in the entire coal deposit; however Tavan Tolgoi covers a much larger area.
West Tsankhi The West Tsankhi section of the Tavan Tolgoi coal deposit has been in operation since 1967, as a small coal mine. It supplied coal to the Mongolian domestic market, but in August 2011, started exporting coal to China In 2009 in order to maximize the mine's production, the Mongolian government put the mine up for international companies and consortia. Six companies were shortlisted –
Shenhua Group,
ArcelorMittal, Kores, Peabody Energy, Vale S.A.,
Xstrata among others. In July 2011 it was reported that the government had awarded the contract to mine West Tsankhi to China's Shenhua Group, a Russian-led consortium, and US miner Peabody Energy Corporation. However, in August, officials said that no decision had been finalised, and now a final decision on it is not due until later in 2012. Recently, Dr Graeme Hancock (COO of ETT) cited the difficulty in managing the multiple companies interested in the consortium.
East Tsankhi The East Tsankhi section is fully owned by Erdenes Tavan Tolgoi, who chose the
Macmahon Holdings and
BBM Operta joint venture to mine the site. The contract is for five years, from 2012-2017 and is worth US$500 million. Production from the mine is expected to be 3 million tonnes in 2012 and reaching a maximum production of 15 million tonnes per year once the mine and its associated infrastructure is built, with a total value over five years of US$2 billion. In 2010 the Mongolian government decided on a plan to float 30% of Erdenes TT in an IPO on the Hong Kong, London and Ulaanbaatar stock exchanges; however this was later reduced to 20% in January 2012. The IPO was intended to occur in 2011, but was postponed to late 2012 or early 2013. In addition, 10% of the Erdenes TT will be sold to local companies, 10% will be distributed in shares to every Mongolian citizen, and the government will retain the remaining share in the company. There is speculation that the Hong Kong listing may be dropped, but this has been denied by the company
Borteeg Borteeg is a central section being tendered to investors for phased development by Erdenes Tavan Tolgoi. In 2026, Erdenes Tavantolgoi launched a targeted development of the Borteeg coking coal block, a central section of the Tavan Tolgoi deposit, inviting international investors through a request for expressions of interest. This block-by-block approach reflects a strategic shift from earlier attempts to sell or partially privatize the entire Tavan Tolgoi complex, aiming to minimize political and
operational risk while monetizing the 424 million ton coal reserve. The Borteeg initiative could generate over $1 billion in export revenue if successfully developed, setting a potential template for unlocking other parts of Tavan Tolgoi.
Ukhaa Khudag The
Ukhaa Khudag section of Tavan Tolgoi deposit covers an area of 2,960 ha and has reserves of 581 million tonnes. It is owned and mined by the Mongolian Mining Corporation (formerly Energy Resources LLC); they were granted a mining license in August 2006, and began mining in April 2009. Production at the mine has increased to 2.1 million tonnes in the first quarter of 2012. MMC constructed a road from Ukhaa Khudag to the Gashuun Sukhait border crossing (finished in October 2011). The road charges other mining companies a fee for use - there are now concerns that trucks are avoiding the toll and driving parallel to it, causing erosion and pollution issues. In 2012, MMC announced plans to construct a railway from Ukhaa Khudag to the Gashuun Sukhait border crossing, to be completed in 2015. While that particular plan apparently did not come to fruition, the railway along the same or similar route was said to be under construction as of 2014, with the estimated completion date in late 2016. A special vote of the
Mongolian Parliament made it possible to construct this railway on the 1435 mm
standard gauge (for a seamless connection with China's railway network), rather than on the 1520 mm
Russian gauge used elsewhere in Mongolia. The 233-km long railway from Tavan Tolgoi to Gashuunsukhait border port came online on September 9, 2022. == References ==