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Investor Presentaiton

SPRINGPOLE - 2021 PFS RESULTS (1) Base Case Highlights: Au Price: US$1,600/oz After-Tax NPV5 5% US$995 million Ag Price: US$20/oz After-Tax IRR 29.4% S Production LOM Year 1 to 9 Mine Life yr 11.3 9.0 FX: LOM Strip Ratio W:0 2.36 2.30 0.75 Daily Throughput tpd 30,000 Gold Gold Head Grade g/t 0.97 1.12 Gold Recovery % 85.7% 87.0% Total Payable Gold koz 3,225 3,018 LOM Year 1-9 Pre-Tax NPV. 5% US$1.5 billion Annual Production 335 koz Annual Production 287 koz Initial Capex US$718mm Pre-Tax IRR 36.4% AISC (net of silver) US$577/oz AISC (net of silver) US$645/oz Sustaining Capex US$55mm Economic Sensitivity to Gold Price AISC (net) Cash Costs AISC Capital Cost Average Annual Gold koz 287 335 Peak Gold Production (Year 3) koz 400 400 Silver Silver Head Grade g/t 5.2 5.7 Silver Recovery % 89.5% 89.8% Total Payable Silver koz 18,117 16,077 Average Annual Silver koz 1,610 1,786 Operating Costs US$/oz $618 $558 US$/oz $645 $577 US$/oz AuEq $673 $612 US$/oz AuEq $698 $631 Pre-Tax Pre-Tax After-Tax Gold Price NPV 5% IRR NPV 5% After-Tax IRR Initial Capex US$mm $718 Sustaining Capex US$mm $55 US$/oz US$mm % US$mm % Closure Cost US$mm $29 $1,300 $822 24.8% $537 20.0% Total Capital US$mm $803 $1,400 $1,042 28.9% $690 23.3% $1,600 $1,482 36.4% $995 29.4% $1,800 $1,921 43.2% $1,297 35.0% $2,000 $2,361 49.5% $1,599 40.1% IRR Economics NPV (5%) Payback Pre-Tax Post Tax US$mm $1,482 $995 % 36.4% 29.4% yr 2.2 2.4 Cash Costs (net) (1) See page 28 for further details and disclosure regarding the 2021 Springpole PFS TSX: FF | OTCQX: FFMGF | FRANKFURT: FMG | www.firstmininggold.com FIRST MINING GOLD | 15
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