Exhibit (c)(vi)

 

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PROJECT ASTERIX Reference Materials August 2022


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Model Bridge C$ per share unless otherwise stated Rio Tinto Model TRQ Model $59.03 $54.51 +$2.34 $42.57 +$3.48 $40.23 +$0.89 +$0.71 $36.74 +$1.78 $33.37 RT DCF Updated Bal. Sheet USDCAD Adj. RT Equity Adj. RT Others TRQ DCF TRQ DCF TRQ DCF (As Consensus Roll Spot (2) DCF Financing DCF (SH Loan: (SH Loan: (SH Loan: (3) Provided) Price Deck Forward to(1) (Diluted) Removal (Undiluted) Cash Flows Cash Flows Carrying 30-Jun-22 Discounted) Discounted) Value)(1) 12% Discount Rate 10% Discount Rate Source: FactSet, Rio Tinto Oyu Tolgoi Model, Turquoise Hill Internal Model at street consensus pricing 1 1. Project finance loan and shareholder loan balances from the Turquoise Internal Hill Internal Model as of 30-Jun-22 and estimated cash balances as of 30-Jun-22 provided by TRQ management as Q2 2022 interim financial statements do not provide detailed breakdown of balances. 2. 1.2883 USDCAD as of 3-Aug-22. PROJECT ASTERIX 3. TRQ NAVPS from the Rio Tinto Model shown under the Historical Approach valuation methodology; Adj. TRQ NAVPS under the Traditional Approach is $39.77, resulting in Others of $2.79.


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Relative Producer P / NAV Multiples Discount Rate (%) First Quantum 0.67x 9.1% Ivanhoe 0.65x 9.7% Lundin Mining 0.62x 8.9% TRQ @ Offer Price P/NAV of 0.52x 0.58x 10.0% (SHL: Carrying Value) at 8.9% DR Ero 0.53x 8.0% Hudbay 0.42x 8.0% Capstone 0.31x 9.0% Median: 0.58x Median: 8.9% Source: FactSet, street research, Turquoise Hill Internal Model at street consensus pricing 2 Note: Medians exclude TRQ. PROJECT ASTERIX


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Precedent Copper Transactions Includes Copper Transactions Greater than US$1.0 bn since 2010 RT Offer at C$34 Producer Transactions Developer Transactions Developer Producer Median 1.04x Median 1.17x Mitsubishi—24.5% AA Sur (Anglo American) 1.76x Jinchuan—Metorex 1.42x Sumitomo—13% Morenci (Freeport) 1.36x Barrick Gold—Equinox Minerals 1.33x Nova Resources—KAZ Minerals 1.29x BHR Partners—24% Tenke Fungurume (Lundin) 1.21x China Moly—56% Tenke Fungurume (Freeport) 1.21x Lundin—80% Candelaria (Freeport) 1.18x Antofagasta—50% Zaldivar (Barrick) 1.17x Sandfire—MATSA (Mubadala & Trafigura) 1.16x Equinox Minerals—Citadel 1.14x South32—Sierra Gorda (Sumitomo) 1.11x Metals Acquisition Corp—CSA Copper Mine (Glencore) 1.07x MMG-led Consortium—Las Bambas (Glencore) 1.04x Glencore—Mutanda Mining 0.99x Minmetals Resources—Anvil 0.99x Zijin Resources—Nevsun Resources 0.93x First Quantum—Inmet 0.89x Guangdong Rising—PanAust 0.81x KGHM Polska—Quadra FNX 0.70x (1) Rio Tinto—Turquoise Hill (SH Loan: Carrying Value) 0.58x Source: Company filings, FactSet, street research 3 Note: Excludes merger of equals transactions. 1. 10% discount rate; based on Rio Tinto proposal of C$34 per share. PROJECT ASTERIX


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Precedent Base Metal Transaction Premiums 240% Nevsun / Reservoir (Apr-16) Glencore / OZ / Volcan 120% Avanco (Mar-18) (Sep-18) Rio Tinto / Turquoise Hill (HUSP)(1) (Mar-22) Zijin / Nevsun Centerra / South32 / (Mar-19) 60% Thompson Creek Ariz. Mining Premium (Nov-16) Sandfire / (Jun-18) k e MOD IGO / (Jun-19) - We Western Areas 1 (Mar-22) OZ / Cassini Nova / (Jun-20) KAZ 30% Lundin / (Jan-21) Josemaria (Dec-21) Rio Tinto / Turquoise Hill (Mar-22) 15% 15% 30% 60% 120% 240% 1-Day Premium Source: Bloomberg, company filings, FactSet 4 1. Based on median peer performance; peers include Capstone, Ero, Filo, First Quantum, Hudbay, Ivanhoe, Los Andes, Lundin Mining, NGEx, Solaris, SolGold, and Western Copper. PROJECT ASTERIX


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APPENDIX Appendix Section 1 Default Section Appendix 5 PROJECT ASTERIX


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APPENDIX Turquoise Hill Trading Since Rio Tinto Offer Day of Rio Tinto Offer (1) $40 TRQ Volume TRQ Share Price Rio Tinto Offer HUSP 14.0 $35 12.0 $34.00 $32.85 10.0 Announced $30 Premium: 32% l G $ ) o (C 8.0 l ba V i ce o Pr $25 Current Premium l e to HUSP: 112% um re a Sh 6.0 (mm) Key Trading Statistics Since Offer $20 Percent of Float Traded (%) 146% 4.0 VWAP (C$) $35.06 (2) Trading Volume Increase (%) 23% $16.01 $15 2.0 $10 --11-Mar 25-Mar 08-Apr 25-Apr 09-May 23-May 06-Jun 20-Jun 04-Jul 18-Jul 01-Aug Source: FactSet 6 Note: Shown in C$. 1. Based on median peer performance; peers include Capstone, Ero, Filo, First Quantum, Hudbay, Ivanhoe, Los Andes, Lundin Mining, NGEx, Solaris, SolGold, and Western Copper. 2. Relative to year before offer. PROJECT ASTERIX


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APPENDIX Street Consensus Commodity Prices (Copper) Broker Name 2022 2023 2024 2025 2026 2027 LT (US$/lb) (US$/lb) (US$/lb) (US$/lb) (US$/lb) (US$/lb) (US$/lb) Bank of America $4.74 $4.31 $3.40 $3.46 $3.53 $3.59 $3.17 Barclays 3.78 3.05 2.90 2.90 n.a. n.a. 3.00 Beacon n.a. 3.50 3.50 3.50 3.50 3.50 3.50 Bell Potter 4.39 4.18 4.05 n.a. n.a. n.a. n.a. Berenberg 4.28 3.94 3.97 3.22 n.a. n.a. n.a. BMO 4.19 3.51 3.54 3.63 3.86 3.40 3.40 Canaccord 4.56 4.25 4.25 4.50 3.50 3.50 3.50 Cantor 4.08 n.a. n.a. n.a. n.a. n.a. n.a. CIBC 4.37 3.75 4.00 3.30 3.30 3.30 3.30 Cormark 4.25 4.00 3.75 3.75 3.75 3.75 3.75 Credit Suisse 3.80 3.30 3.20 3.50 n.a. n.a. 3.49 Desjardins 4.46 4.46 4.05 4.05 4.05 4.05 4.05 Deutsche 4.87 3.74 3.77 3.89 n.a. n.a. 3.63 Echelon 4.05 3.90 n.a. n.a. n.a. n.a. n.a. Eight 4.31 4.50 4.50 4.00 3.75 n.a. 3.50 H.C. Wainwright 2.20 2.20 2.20 2.20 2.20 2.20 2.20 Haywood 4.15 4.15 4.15 4.15 4.15 4.15 4.15 HSBC 4.25 4.00 3.70 3.50 3.60 n.a. 3.15 Itau BBA 4.20 3.80 3.60 3.00 n.a. n.a. n.a. Jefferies 4.50 5.06 6.00 6.50 n.a. n.a. 3.50 JP Morgan n.a. n.a. n.a. n.a. n.a. n.a. 3.50 Laurentian 4.59 4.50 4.25 3.75 3.75 3.75 3.75 M Partners 3.50 n.a. n.a. n.a. n.a. n.a. n.a. Broker Name 2022 2023 2024 2025 2026 2027 LT (US$/lb) (US$/lb) (US$/lb) (US$/lb) (US$/lb) (US$/lb) (US$/lb) Macquarie 4.62 3.87 3.63 3.97 4.20 3.89 n.a. Morgan Stanley 4.40 3.92 4.17 4.22 3.86 3.86 2.98 National 4.70 4.70 4.00 3.50 n.a. n.a. 3.30 Paradigm 4.38 4.25 4.00 3.50 3.50 3.50 3.50 PI Financial n.a. n.a. n.a. n.a. n.a. n.a. 4.00 Raymond James 4.19 3.75 n.a. n.a. n.a. n.a. 3.50 RBC 4.25 3.75 3.75 4.00 4.00 n.a. 3.50 Scotia 4.50 4.50 4.50 5.00 5.50 n.a. 3.50 SEB 4.54 4.08 4.08 4.08 4.08 4.08 4.08 Societe Generale 4.48 4.31 4.99 5.67 n.a. n.a. n.a. Stifel 4.55 4.50 4.25 4.00 4.00 4.00 4.00 TD 4.49 4.25 4.00 3.75 3.50 3.50 3.50 UBS 4.06 3.50 3.50 3.75 3.90 n.a. 3.50 VTB 3.52 3.22 3.31 n.a. n.a. n.a. n.a. High 4.87 5.06 6.00 6.50 5.50 4.15 4.15 Median $4.34 $4.00 $4.00 $3.75 $3.75 $3.67 $3.50 Average 4.24 3.96 3.90 3.87 3.78 3.63 3.50 Low 2.20 2.20 2.20 2.20 2.20 2.20 2.20 7 PROJECT ASTERIX


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APPENDIX Street Consensus Commodity Prices (Gold) Broker Name 2022 2023 2024 2025 2026 2027 LT (US$/oz) (US$/oz) (US$/oz) (US$/oz) (US$/oz) (US$/oz) (US$/oz) Bank of America $1,918 $2,049 $1,852 $1,818 $1,784 $1,750 $1,750 Barclays 1,713 1,588 1,500 1,500 1,500 1,500 1,500 Beacon 1,800 1,700 1,600 1,600 1,600 1,600 1,600 Bell Potter 1,905 1,900 1,925 n.a. n.a. n.a. n.a. Berenberg 1,800 1,700 1,650 1,550 n.a. n.a. n.a. BMO 1,896 1,750 1,675 1,600 1,600 1,400 1,400 Canaccord 1,830 1,848 1,886 1,927 1,927 1,927 1,927 Cantor 2,050 2,150 1,800 1,800 1,800 1,800 2,000 CIBC 1,863 1,750 1,650 1,650 1,650 1,650 1,650 Cormark 1,800 1,800 1,800 1,800 1,800 1,800 1,800 Credit Suisse 1,850 1,600 1,783 1,741 n.a. n.a. 1,400 Desjardins 1,820 1,820 1,700 1,700 1,700 1,700 1,700 Deutsche 1,688 1,659 1,698 1,713 n.a. n.a. 1,600 Echelon 1,810 1,765 n.a. n.a. n.a. n.a. n.a. Edison n.a. 1,749 1,681 1,617 1,554 1,524 1,524 Eight 1,837 1,850 1,900 1,900 1,800 n.a. 1,700 H.C. Wainwright 1,900 1,900 1,900 1,900 1,900 1,900 1,900 Haywood 1,850 1,900 1,900 1,900 1,900 1,900 1,900 HSBC 1,820 1,750 n.a. n.a. n.a. n.a. 1,600 Jefferies 2,000 1,800 1,750 1,700 n.a. n.a. 1,500 JP Morgan n.a. n.a. n.a. n.a. n.a. n.a. 1,600 Laurentian 1,803 1,750 1,750 1,750 1,750 1,750 1,750 M Partners 1,800 1,800 1,800 1,800 1,800 1,800 1,800 Broker Name 2022 2023 2024 2025 2026 2027 LT (US$/oz) (US$/oz) (US$/oz) (US$/oz) (US$/oz) (US$/oz) (US$/oz) Mackie Research 1,850 1,850 1,850 1,850 1,850 1,850 1,850 Macquarie 1,855 1,613 1,650 1,700 1,750 1,713 n.a. Morgan Stanley 1,888 1,675 1,538 1,400 1,400 1,400 1,172 National 1,830 1,830 1,710 1,590 1,475 1,475 1,475 Nomura 1,889 1,945 n.a. n.a. n.a. n.a. n.a. Paradigm 1,898 1,898 1,898 1,898 1,898 1,898 1,898 PI Financial n.a. n.a. n.a. n.a. n.a. n.a. 1,800 Raymond James 1,725 1,650 n.a. n.a. n.a. n.a. 1,600 RBC 1,696 1,650 1,600 1,550 1,500 n.a. 1,500 Scotia 1,820 1,700 1,500 1,500 1,500 1,500 1,500 SEB 1,857 1,861 1,861 1,861 1,861 1,861 1,861 Societe Generale 2,050 1,850 n.a. n.a. n.a. n.a. n.a. Stifel 1,820 1,750 1,750 1,750 1,750 1,750 1,750 TD 1,915 1,850 1,800 1,700 1,700 1,700 1,700 UBS 1,675 1,550 1,550 1,575 1,671 n.a. 1,500 High 2,050 2,150 1,925 1,927 1,927 1,927 2,000 Median $1,837 $1,783 $1,750 $1,707 $1,750 $1,750 $1,675 Average 1,843 1,785 1,739 1,711 1,708 1,702 1,663 Low 1,675 1,550 1,500 1,400 1,400 1,400 1,172 8 PROJECT ASTERIX


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APPENDIX Street Consensus Commodity Prices (Silver) Broker Name 2022 2023 2024 2025 2026 2027 LT (US$/oz) (US$/oz) (US$/oz) (US$/oz) (US$/oz) (US$/oz) (US$/oz) Bank of America $27.00 $31.71 $29.47 $27.98 $26.49 $25.00 $25.00 Barclays 22.50 20.60 20.00 20.00 20.00 20.00 20.00 Beacon n.a. n.a. 25.00 25.00 25.00 25.00 25.00 Bell Potter 22.07 22.06 22.35 n.a. n.a. n.a. 23.21 Berenberg 24.50 23.00 22.00 20.00 n.a. n.a. n.a. BMO 24.51 22.50 23.00 22.00 21.00 20.00 20.00 Canaccord 23.24 23.49 24.18 24.70 24.70 24.70 24.70 Cantor 25.50 n.a. n.a. n.a. n.a. n.a. n.a. CIBC 25.75 23.00 20.00 20.00 20.00 20.00 20.00 Cormark 23.00 23.00 23.00 23.00 23.00 23.00 23.00 Credit Suisse 20.00 18.00 18.37 18.36 n.a. n.a. 16.50 Desjardins 23.00 23.00 22.25 22.25 22.25 22.25 22.25 Deutsche 23.20 26.00 28.00 24.00 n.a. n.a. 21.00 Echelon 24.50 24.00 n.a. n.a. n.a. n.a. n.a. Edison n.a. 23.60 23.00 22.80 22.50 n.a. n.a. Eight 26.00 25.00 25.00 22.50 22.50 22.50 22.50 H.C. Wainwright 25.00 25.00 25.00 25.00 25.00 25.00 25.00 Haywood 23.00 23.75 20.00 n.a. n.a. n.a. n.a. HSBC 24.30 25.00 24.00 24.00 24.00 24.00 24.00 Itau BBA 20.00 26.00 28.00 28.00 28.00 28.00 28.00 Jefferies 25.34 25.34 25.34 25.34 25.34 25.34 25.34 JP Morgan n.a. n.a. n.a. n.a. n.a. n.a. 25.00 Laurentian 25.00 n.a. n.a. n.a. n.a. n.a. n.a. (US$/oz) (US$/oz) (US$/oz) (US$/oz) (US$/oz) (US$/oz) (US$/oz) M Partners 25.00 25.00 25.00 25.00 25.00 25.00 25.00 Mackie Research 25.50 25.50 25.50 25.50 25.50 25.50 25.50 Macquarie 23.63 20.00 22.00 23.25 24.50 23.98 n.a. Morgan Stanley 24.20 23.70 22.00 22.00 22.50 22.50 20.00 National 23.00 23.00 22.00 20.00 19.00 19.00 19.00 Nomura 23.90 25.10 n.a. n.a. n.a. n.a. n.a. Paradigm 23.92 23.92 23.92 23.92 23.92 23.92 23.92 PI Financial n.a. n.a. n.a. n.a. n.a. n.a. 22.50 Raymond James 23.00 23.00 n.a. n.a. n.a. n.a. 22.50 RBC 24.00 22.50 20.00 19.50 18.75 n.a. 18.75 Scotia 24.39 23.00 20.00 20.00 20.00 20.00 20.00 SEB 24.00 24.00 24.00 24.00 24.00 24.00 24.00 Stifel 25.13 24.00 24.00 24.00 24.00 24.00 24.00 TD 24.63 24.00 23.00 22.00 22.00 22.00 22.00 UBS 22.00 19.00 17.00 17.00 17.00 17.00 17.00 High 27.00 31.71 29.47 28.00 28.00 28.00 28.00 Median $24.10 $23.70 $23.00 $23.00 $23.46 $23.95 $22.75 Average 23.93 23.63 23.11 22.80 22.92 22.99 22.49 Low 20.00 18.00 17.00 17.00 17.00 17.00 16.50 9 PROJECT ASTERIX


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APPENDIX Street Consensus Commodity Prices (Molybdenum) Broker Name 2022 2023 2024 2025 2026 2027 LT (US$/lb) (US$/lb) (US$/lb) (US$/lb) (US$/lb) (US$/lb) (US$/lb) Bank of America $18.89 $19.10 $19.10 $16.50 $13.91 $11.31 $10.00 BMO 16.77 14.00 12.00 10.00 10.00 10.00 10.00 CIBC 14.40 12.50 11.55 9.25 9.25 9.25 9.25 Cormark 20.00 15.00 15.00 15.00 15.00 15.00 15.00 Deutsche 11.80 12.00 12.30 n.a. n.a. n.a. n.a. Eight 12.00 12.00 12.00 12.00 12.00 12.00 12.00 H.C. Wainwright 14.00 14.00 14.00 14.00 14.00 14.00 14.00 Itau BBA 15.00 14.00 13.00 13.00 13.00 13.00 13.00 Jefferies 21.11 19.37 14.62 12.00 n.a. n.a. n.a. Morgan Stanley 18.25 11.50 11.00 11.00 11.00 n.a. n.a. National 19.00 19.00 15.00 12.00 n.a. n.a. 10.00 RBC 15.00 15.00 12.50 8.50 8.50 8.50 8.50 Scotia 18.25 15.00 14.00 14.00 14.00 n.a. 12.00 Stifel 19.00 19.00 17.00 12.00 12.00 12.00 12.00 TD n.a. n.a. n.a. n.a. n.a. n.a. 15.00 UBS 16.51 9.75 9.00 8.91 n.a. n.a. 8.00 High 21.11 19.37 19.10 16.50 15.00 15.00 15.00 Median $16.77 $14.00 $13.00 $12.00 $12.00 $12.00 $12.00 Average 16.67 14.75 13.47 12.01 12.06 11.67 11.44 Low 11.80 9.75 9.00 8.50 8.50 8.50 8.00 10 PROJECT ASTERIX


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