Investor Presentaiton

Single Well Economics* - Sensitivities HELIUM EVOLUTION Helium price (US$/mcf) $ 375 $ 450 $ 525 $ 600 $ 725 $ 800 $ 875 Helium price (C$/mcf) $ 490 $ 590 $ 680 $ 780 $ 940 $ 1,040 $ 1,140 IRR (%) 43% 57% 69% 82% 103% 117% 130% Payout period (years) 2.0 1.6 1.4 1.2 0.9 0.8 0.8 NPV ($MM) Undiscounted 33.7 45.2 55.7 67.2 85.7 97.3 108.9 5% 22.7 31.4 39.2 47.9 61.9 70.6 79.3 10% 15.8 22.7 28.9 35.8 46.9 53.8 60.7 15% 11.1 16.8 21.9 27.6 36.8 42.5 48.2 20% 7.8 12.6 17.0 21.8 29.5 34.4 39.2 25% 5.3 9.5 13.3 17.4 24.1 28.3 32.5 CORPORATE PRESENTATION | TSXV: HEVI *Economic sensitivities shown above are calculated based on certain assumptions and do not represent guaranteed IRR, payout or NVP. | 14

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