Company: RTNTF
Filing Date: 2025-02-20
Form Type: 20-F
Source: 0001628280-25-006642
Chunk: 528

Company: RIO TINTO LTD
Filing Date: 2025-02-20
Form: 20-F
Chunk 528
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 the Trans-China railway system. A permanent domestic airport has been constructed at Oyu Tolgoi, 13km north of the camp area, to support the transportation of people and goods to the site from Ulaanbaatar. It further serves as the regional airport for Khanbogd soum. The airport is designed to accommodate commercial aircraft up to the Boeing 737-800 series. The flight time from Ulaanbaatar is just over one hour. A major groundwater resource was discovered at Gunii Khooloi, the development of which provides the raw water supply for the camp and operations at Oyu Tolgoi. Power for Oyu Tolgoi is currently supplied with electricity from China’s Inner Mongolia Autonomous Region (IMAR) in accordance with the Electricity Purchase and Sales Agreement for the Oyu Tolgoi Project between Oyu Tolgoi LLC, the Inner Mongolia Power International Cooperation (IMPIC) company, and the National Power Transmission Grid of Mongolia. Power is supplied via a 220kV double-circuit transmission line from the IMAR West grid. Either circuit can supply approximately 350MW, thus Oyu Tolgoi’s load can be met entirely from one circuit while the other is kept for redundancy. Oyu Tolgoi operates and maintains assets within remote fly-in-fly-out (FIFO) Village at Oyu Tolgoi. There are ~18,000 rooms along with assorted central facilities such as dining rooms, taverns, and recreational facilities. Critical infrastructure that supports the FIFO Villages includes potable and waste water plants, potable water networks, and back-up power generation. The Oyut open pit mine supplies ore to the concentrator via a primary crusher and overland conveyor. The Hugo North underground mine is currently being developed and will consist of multiple block caves supported by multiple shafts and a conveyor to surface material handling system. Titles, leases and permits The following key agreements relating to the development and operation of Oyu Tolgoi have been entered into by Rio Tinto, the Government of Mongolia, and other entities and have an impact on Rio Tinto’s interest in, and obligations relating to Oyu Tolgoi: – Investment Agreement dated 6 October 2009, between the Government of Mongolia, Ivanhoe Mines Mongolia Inc LLC (renamed Oyu Tolgoi LLC), and Rio Tinto International Holdings Limited in respect of Oyu Tolgoi (Investment Agreement). – In 2004, Entrée Gold Inc (renamed Entrée Resources Ltd)