Bunker Hill PEA shows 42% NPV increase to $143M; AISC down 29% to $0.47/lb

Bunker Hill Mining Corp.

After-tax NPV (5%) of $143M vs. $101M in June PEA; IRR 35.2% with 2.6-year payback.
All-in sustaining cost (AISC) falls 29% to $0.47 per payable lb of zinc; cash costs down 33%.
Average annual free cash flow of $25.2M over extended 11-year mine life; 41% increase in total FCF.
Initial capital cost of $44M (incl. 20% contingency) for 18-month restart; total production of 990M zinc-equivalent lbs.
Metal price assumptions unchanged from April PEA ($1.15/lb Zn, $0.90/lb Pb, $20/oz Ag).

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