Turquoise Hill Resources today announced third quarter 2017 production for Oyu Tolgoi.
Jeff Tygesen, Chief Executive Officer of Turquoise Hill, said, “During the third quarter, Oyu Tolgoi set three operational
records for total material mined, ore treated and average daily concentrator throughput. We are extremely proud of what
the nearly all-Mongolian operations team achieved for the quarter. Copper production for the quarter was in-line with
second quarter while gold production increased almost 30%.”
In Q3’17, material mined increased 9.0% over Q2’17 and ore treated increased 10.1% over Q2’17. During Q2’17, the
concentrator underwent a scheduled maintenance shutdown. Average daily concentrator throughput for Q3’17 of 115,400
tonnes increased 8.9% over Q2’17. Copper production in Q3’17 was essentially flat compared to Q2’17 while Q3’17 gold
production increased 29.2% over Q2’17 due to higher head grades from the medium-grade stockpile and Phase 4A. Higher
gold grades during Q3’17 resulted in a 26.1% increase in gold sales compared to Q2’17.
Oyu Tolgoi is expected to produce 130,000 to 160,000 tonnes of copper and 100,000 to 140,000 ounces of gold in
concentrates for 2017. Open-pit operations are expected to mine in Phases 4 and 6 during the year. In addition, stockpiled
ore will continue to be processed during 2017.
News Release
October 16, 2017

Oyu Tolgoi Production Data All data represents full production and sales on a 100% basis 2031Q6 2041Q6 2011Q7 2021Q7
2031Q7 9 months 2016 9 mo2n0t1h7s Full 2Y0e1a6r
Open pit material mined (‘000 tonnes) 25,739 25,615 24,333 25,193 27,466 71,322 76,992 96,938
Ore treated (‘000 tonnes) 9,146 9,819 10,087 9,637 10,615 28,333 30,339 38,152
Average mill head grades:
Copper (%) 0.66 0.61 0.51 0.51 0.48 0.67 0.50 0.65
Gold (g/t) 0.21 0.25 0.15 0.16 0.18 0.39 0.16 0.36
Silver (g/t) 1.99 1.50 1.30 1.38 1.34 1.95 1.34 1.83
Concentrates produced (‘000 tonnes) 203.2 206.7 176.0 171.0 170.0 639.8 517.0 846.6
Average concentrate grade (% Cu) 22.9 22.0 21.6 21.8 21.7 24.4 21.7 23.8
Production of metals in concentrates:
Copper (‘000 tonnes) 46.6 45.5 38.1 37.2 36.9 155.9 112.1 201.3
Gold (‘000 ounces) 37 49 25 24 31 251 80 300
Silver (‘000 ounces) 361 273 215 236 239 1,147 689 1,420
Concentrate sold (‘000 tonnes) 206.2 182.0 190.2 182.0 176.6 646.6 548.8 828.6
Sales of metals in concentrates:
Copper (‘000 tonnes) 45.7 37.6 39.5 37.3 36.9 151.3 113.6 188.9
Gold (‘000 ounces) 38 39 32 23 29 307 84 347
Silver (‘000 ounces) 341 239 205 222 229 1,041 656 1,280
Metal recovery (%)
Copper 78.0 76.6 74.9 74.6 73.5 82.4 74.3 81.0
Gold 62.0 63.4 48.8 47.7 51.2 69.7 49.4 68.5
Silver 61.7 57.2 51.8 53.9 52.8 64.7 51.8 63.1

Forward-looking statements
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