VANCOUVER, BC--(Marketwired - January 15, 2018) -
- Oyu Tolgoi meets 2017 production guidance; achieves record material mined and throughput
- Shaft 2 reaches final depth in December 2017
Turquoise Hill Resources (
Jeff Tygesen, Chief Executive Officer of Turquoise Hill, said, "Oyu Tolgoi had a strong fourth quarter setting quarterly and annual records for open pit material mined as well as concentrator throughput. They also met annual production guidance, which is an excellent achievement given the grade challenges of 2017. We are extremely proud of Oyu Tolgoi's numerous accomplishments for the year."
Material mined in Q4'17 increased 5.3% over Q3'17 and ore treated increased 2.1% over Q3'17. Higher mill availability and processing of softer Phase 6 ore in Q4'17 resulted in a 20.8% increase in concentrate production over Q3'17. Copper production in Q4'17 increased 22.8% compared to Q3'17 due to higher grades and improved mill availability. Gold production in Q4'17 increased 12.9% over Q3'17 due to increased grades and higher concentrate production.
Oyu Tolgoi is expected to produce 125,000 to 155,000 tonnes of copper and 240,000 to 280,000 ounces of gold in concentrates for 2018.
Underground development progress
During Q4'17, underground development continued to progress with Shaft 2 reaching final depth of 1,284 metres in December. Completed sinking of Shaft 2 is expected imminently and fit out is expected throughout 2018. Sinking of Shaft 5 also progressed during Q4'17 and is expected to be complete in Q1'18. Also in December, the fifth development crew became fully operational.
|Oyu Tolgoi Production Data|
|All data represents full production and sales on a 100% basis|
|4Q 2016||1Q 2017||2Q 2017||3Q 2017||4Q 2017||Full Year
|Full Year 2016|
| Open pit material mined
|Ore treated ('000 tonnes)||9,819||10,087||9,637||10,615||10,838||41,177||38,152|
|Average mill head grades:|
| Concentrates produced
| Average concentrate
grade (% Cu)
| Production of metals
|Copper ('000 tonnes)||45.5||38.1||37.2||36.9||45.3||157.4||201.3|
|Gold ('000 ounces)||49||25||24||31||35||114||300|
|Silver ('000 ounces)||273||215||236||239||285||974||1,420|
| Concentrate sold
| Sales of metals in
|Copper ('000 tonnes)||37.6||39.5||37.3||36.9||35.7||149.3||188.9|
|Gold ('000 ounces)||39||32||23||29||27||111||347|
|Silver ('000 ounces)||239||205||222||229||205||860||1,280|
|Metal recovery (%)|
Turquoise Hill Resources today announced that Oyu Tolgoi LLC has received, and is evaluating, a Tax Act ("tax assessment") for approximately US$155 million from the Mongolian Tax Authority relating to an audit on taxes imposed and paid by Oyu Tolgoi LLC between 2013 and 2015.
Turquoise Hill is of the firm view that Oyu Tolgoi LLC has paid all taxes and charges required under the Investment Agreement (and reconfirmed in the Underground Mine Development and Financing Plan) and Mongolian law. The tax assessment is being evaluated by Oyu Tolgoi LLC and a response will be issued within the timeframe required by Mongolian Law.