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Great Basin Heap Leach Comparables

Average ROM Resource / Reserves Grade (excluding Long Canyon): ~0.50 g/t Au
Average Au Recovery: ~70%

Reserve/Resource Cut-off grade
Company Asset Location Stage Process Au Recovery (%)
grade (g/t Au) (g/t Au)
SSR Mining Marigold Nevada Operating ROM 0.49 1 70 1 0.065 1

Nevada Gold Mines Long Canyon Nevada Operating ROM 2.21 2 80 2 0.24 2

Kinross Round Mountain Nevada Operating ROM 0.42 3A 61 3B 0.16 3C

Kinross Bald Mountain Nevada Operating ROM 0.60 4A 60 4B 0.14 4C

Fiore Pan Nevada Operating ROM/Crush 0.42 5 60-80 5 0.09 5

Equinox Mesquite California Operating ROM 0.54 6A 75 6B 0.125 6B

Equinox Castle Mountain California Operating ROM 0.51 6A 72.4 6C 0.17 6C
Liberty Gold Goldstrike Utah PEA ROM 0.50 7A ~78 7B 0.20 7A

Liberty Gold Black Pine Idaho Resource ROM/Crush 0.51 8A ~70-80 8B 0.20 8A

1 SSR 2020 AIF March 2021 Technical Report
2 Barrick 2020 AIF 7A 2018 M&I Grade (Liberty Gold Press Release, 2018);
• Open-pit, run-of-mine heap-leach operations are some of 3A Kinross 2020 Annual Report, Heap Leach, 2020 head 7B Variable by grade; estimated from column tests and
3B
the lowest cost gold producers in the world grade; Kinross 2020 AIF Average recovery (range 46% projected to ROM
8A
Liberty Gold Press Release, July 13, 2021, M&I grade
3C
to 76%) Kinross 2020 AIF Mineral Reserves cut-off
4A Kinross 2020 Reserve Statement Kinross 2020 AIF 8B Weighted average from column tests; projected to
4B
• Can operate down to very low average grades and cut- average recovery (range: 36% to 83%) Kinross 2020 ROM material size up to 80% recoveries; Liberty Gold
4C
AIF
Press Release
offs 5 Fiore August 2021 corporate presentation
6A Equinox 2020 Reserve Statement; Mesquite May
6B
2020 Technical Report (oxide-ores) 6C Castle Mountain
6 TSX:LGD | OTCQX:LGDTF