1 DEPUTY PRIME MINISTER S.AMARSAIKHAN DISMISSED FOR VIOLATING ACCOUNTABILITY AGREEMENT WWW.GOGO.MN PUBLISHED:2025/10/29      2 STATE EMERGENCY COMMISSION ORDERS READINESS AMID FUEL-SHORTAGE RISKS WWW.GOGO.MN PUBLISHED:2025/10/29      3 WORLD BANK TO ASSIST MONGOLIA IN COP17 PREPARATIONS WWW.MONTSAME.MN PUBLISHED:2025/10/29      4 CRIMINAL INVESTIGATION LAUNCHED AGAINST MP D.AMARBAYASGALAN WWW.GOGO.MN PUBLISHED:2025/10/28      5 MONGOLIA AND GERMANY TO HOLD NEGOTIATIONS ON DEVELOPMENT COOPERATION WWW.MONTSAME.MN PUBLISHED:2025/10/28      6 MONGOLIAN HEALTH WORKERS BEGIN STRIKE AFTER EIGHT DAYS OF PROTEST WWW.ASIANEWS.NETWORK PUBLISHED:2025/10/28      7 STEPPE FIRE DESTROYS 800 HECTARES OF LAND IN EASTERN MONGOLIA WWW.XINHUANET.COM PUBLISHED:2025/10/28      8 MONGOLIA’S CORRUPTION PROBE AT OYU TOLGOI MINING OPERATIONS UNFOLDS WWW.DISCOVERYALERT.COM.AU PUBLISHED:2025/10/28      9 RIO TINTO AND SPIC QIYUAN BEGIN BATTERY-SWAP TRUCK TRIAL IN MONGOLIA WWW.MINING-TECHNOLOGY.COM PUBLISHED:2025/10/28      10 THE EUROPEAN UNION - MONGOLIA BUSINESS AND INVESTMENT FORUM LAUNCHES A NEW ERA OF ECONOMIC PARTNERSHIP WWW.EEAS.EUROPA.EU PUBLISHED:2025/10/28      "С.АМАРСАЙХАН ХАРИУЦЛАГЫН ГЭРЭЭ ЗӨРЧСӨН ТУЛ ЕРӨНХИЙ САЙД Г.ЗАНДАНШАТАР АЛБАН ТУШААЛААС НЬ ОГЦРУУЛСАН" WWW.EAGLE.MN НИЙТЭЛСЭН:2025/10/29     ЗГ: ГЭР БҮЛИЙН ТУХАЙ ХУУЛИЙН ШИНЭЧИЛСЭН НАЙРУУЛГЫГ ХЭЛЭЛЦЭНЭ WWW.NEWS.MN НИЙТЭЛСЭН:2025/10/29     ҮСХ: ДИЗЕЛИЙН ТҮЛШ ЛИТР ТУТАМДАА 74 ТӨГРӨГӨӨР ӨСӨЖ ₮3014 БОЛОВ WWW.EGUUR.MN НИЙТЭЛСЭН:2025/10/29     ЭНЭ ОНЫ ЭХНИЙ 10 САРД 14,785 ХҮҮХЭД ХҮЧИРХИЙЛЭЛД ӨРТЖЭЭ WWW.NEWS.MN НИЙТЭЛСЭН:2025/10/29     РИО ТИНТО ГРУПП ОЮУТОЛГОЙ ХХК-Д АВЛИГЫН ЭСРЭГ ШАЛГАЛТ ЭХЛҮҮЛЭВ WWW.NEWS.MN НИЙТЭЛСЭН:2025/10/28     УОК: ЭРСДЭЛД БЭЛЭН БАЙХЫГ ҮҮРЭГ БОЛГОВ WWW.NEWS.MN НИЙТЭЛСЭН:2025/10/28     ЛАГ ШАТААХ ҮЙЛДВЭР ТӨСЛИЙГ ТӨР, ХУВИЙН ХЭВШЛИЙН ТҮНШЛЭЛЭЭР ХЭРЭГЖҮҮЛНЭ WWW.EGUUR.MN НИЙТЭЛСЭН:2025/10/28     УЛААНБААТАР-СИНГАПУРЫН ЧИГЛЭЛД ШУУД НИСЛЭГ ҮЙЛДЭНЭ WWW.MONTSAME.MN НИЙТЭЛСЭН:2025/10/28     ЗАЙСАНГИЙН ГҮҮРИЙГ 54 ЖИЛИЙН ДАРАА БҮРЭН ШИНЭЧИЛЛЭЭ WWW.EGUUR.MN НИЙТЭЛСЭН:2025/10/28     ЦЕГ-ЫН ДАРГААР Ж.БОЛДЫГ ТОМИЛЛОО WWW.ITOIM.MN НИЙТЭЛСЭН:2025/10/28    

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