1 RIO-GLENCORE DEAL CLOSER THAN EVER WITH PREMIUM AND CEO IN FOCUS WWW.BLOOMBERG.COM PUBLISHED:2026/01/10      2 MONGOLIA'S INFLATION DOWN TO 7.5 PCT IN DECEMBER 2025 WWW.XINHUANET.COM PUBLISHED:2026/01/10      3 MONGOLIA ENERGY FACES MNT 412.3 BILLION TAX LIABILITY AFTER LOSING MONGOLIAN COURT CASE WWW.TIPRANKS.COM  PUBLISHED:2026/01/10      4 NUMBER OF FOREIGN NATIONALS RESIDING FOR OFFICIAL AND PRIVATE PURPOSES UP 7.4% WWW.MONTSAME.MN PUBLISHED:2026/01/10      5 SUSTAINABILITY RELATED REPORTING: READINESS ASSESSMENT MONGOLIA REPORT WWW.UNDP.ORG PUBLISHED:2026/01/10      6 GOVERNMENT TO FORMALLY APPROACH RIO TINTO, OYU TOLGOI TO SAFEGUARD NATIONAL INTEREST WWW.MONTSAME.MN PUBLISHED:2026/01/09      7 NON-COMPLIANT ADVERTISING BILLBOARDS TO BE REMOVED WWW.MONTSAME.MN PUBLISHED:2026/01/09      8 FROM TORONTO, CANADA TO PHU QUOC, VIETNAM: MONGOLIA’S BOLD 2026 AVIATION EXPANSION INCLUDES NEW FLIGHTS, VISA-FREE TRAVEL, AND AIRPORT UPGRADES! WWW.TRAVELANDTOURWORLD.COM PUBLISHED:2026/01/09      9 MONGOLIA TO MARK 820TH ANNIVERSARY OF THE GREAT MONGOL EMPIRE WWW.MONTSAME.MN PUBLISHED:2026/01/09      10 PARLIAMENT SUPPORTS SOLAR GER INITIATIVE UNDER NEW REGULATORY REFORMS WWW.MONTSAME.MN PUBLISHED:2026/01/09      GLENCORE, RIO TINTO КОМПАНИУД НЭГДЭХ ХЭЛЭЛЦЭЭ ХИЙЖ БАЙНА WWW.ITOIM.MN НИЙТЭЛСЭН:2026/01/10     Н.НАРАНБААТАР: ЭНЭ ОНД НҮҮРСНИЙ ЭКСПОРТЫН ХЭМЖЭЭГ 90 САЯ ТОННД БАРИНА WWW.MONTSAME.MN НИЙТЭЛСЭН:2026/01/10     УЛААНБААТАРТ ӨНДӨР ТЕХНОЛОГИЙН ХОЁР ҮЙЛДВЭР БАЙГУУЛЖ, УСАН ХАНГАМЖИЙГ 80 ХУВИАР НЭМЭГДҮҮЛЛЭЭ WWW.GOGO.MN НИЙТЭЛСЭН:2026/01/09     ХУУЛЬ БУС ЭЗЭМШИЛД БАЙСАН 15 БАРИЛГА БАЙГУУЛАМЖИЙГ НИЙСЛЭЛД БУЦААН АВЧЭЭ WWW.NEWS.MN НИЙТЭЛСЭН:2026/01/09     МОНГОЛ УЛСАД 37 097 ГАДААД ИРГЭН ОРШИН СУУХ БҮРТГЭЛТЭЙ БАЙНА WWW.EAGLE.MN НИЙТЭЛСЭН:2026/01/09     ҮСХ: 12 ДУГААР САРЫН ИНФЛЯЦ 7.5 ХУВЬТАЙ ГАРЛАА WWW.EAGLE.MN НИЙТЭЛСЭН:2026/01/09     2026 ОНД НИЙСЛЭЛД ХЭРЭГЖИХ ТОМООХОН БҮТЭЭН БАЙГУУЛАЛТУУД WWW.ITOIM.MN НИЙТЭЛСЭН:2026/01/09     ДУЛААНЫ ТАРИФ НЭМЭГДҮҮЛЭХ ШИЙДВЭРИЙГ ХОЙШЛУУЛЖ, 2027 ОНЫ НЭГДҮГЭЭР САРЫН 1-НЭЭС НЭМНЭ WWW.EGUUR.MN НИЙТЭЛСЭН:2026/01/09     НИЙГМИЙН ДААТГАЛЫН ӨР ТӨЛБӨРТ ТООЦОЖ, "КАПИТАЛ" БАНКНААС ХУРААСАН ХӨРӨНГИЙГ ДУУДЛАГААР ХУДАЛДАНА WWW.GOGO.MN НИЙТЭЛСЭН:2026/01/09     НИЙСЛЭЛИЙН 19 БАЙРШИЛД 11.7 КМ АВТО ЗАМЫН БОРООНЫ УС ЗАЙЛУУЛАХ ШУГАМ УГСАРНА WWW.ITOIM.MN НИЙТЭЛСЭН:2026/01/08    

Rio Tinto delays underground production of Oyu Tolgoi again www.news.mn

Oyu Tolgoi’s underground expansion has been hamstrung by delays, development issues and cost overruns for years. Rio Tinto and Turquoise Hill Resources signed a development and financing plan with Mongolia in 2015 that provided basis for funding the project — but six years on, production has yet to begin in a sustainable way.
Once the underground expansions are completed, Oyu Tolgoi is expected produce more than 500,000 tonnes of copper per year. Initial projections estimated that the mine would be able to sustainably produce copper from 2021 onwards. However, last December, Rio Tinto pushed the timeline back and said “sustainable production” was expected to commence in October 2022. The miner also said the underground expansion would cost $6.75 billion, higher than previous estimates.
On Friday, Rio Tinto again delayed that forecast and said sustainable production will happen “no earlier than January 2023.”
The company cited the impact of Covid-19 and outstanding issues around caving operations. It warned that Mongolia’s additional Covid-19 restrictions this year to tackle community transmission is set to add an estimated $140 million to the budget as of the end of September. While Rio Tinto blamed the delays and rising costs on challenging ground conditions, an independent review this year contradicted that explanation.
The Independent Consulting Group’s report, commissioned by Rio Tinto’s partners on the project, concluded that poor management was the main reason the mine’s underground expansion was running almost two years late and $1.45 billion over budget, the Financial Times reported.
The open-pit and underground mining project is being jointly developed by the government, which owns about 34% of Oyu Tolgoi, and Rio Tinto’s Canadian subsidiary Turquoise Hill Resources that has a 66% stake in it. The Anglo-Australian miner owns nearly 51% stake in Turquoise Hill Resources.


Published Date:2021-10-19