Omai Gold Delivers PEA with After-Tax NPV5% of $556 Million and 19.8% IRR at a $1,950/oz Gold Price for Wenot Open Pit Project in Guyana

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(All dollar amounts are in United States dollars, unless otherwise stated)

Toronto, Ontario--(Newsfile Corp. - April 4, 2024) - Omai Gold Mines Corp. (TSXV: OMG) (OTCQB: OMGGF) ("Omai Gold" or the "Company") is pleased to announce positive results from its first Preliminary Economic Assessment ("PEA") for the Wenot Project, one of the two gold deposits located on its 100%-owned Omai Property, in Guyana. The PEA supports an initial open pit mining scenario for production averaging 142,000 ounces of gold per year over a 13-year mine life, with peak year production of 184,000 ounces. Total Wenot production is estimated at 1,840,000 ounces of payable gold. A spot gold price sensitivity of $2,200/oz supports an after-tax Net Present Value5% ("NPV") of $777 million, a 24.7% Internal Rate of Return ("IRR"), and a payback period of 3.5 years.

Elaine Ellingham, President and CEO comments: "We are extremely pleased with this first economic assessment for the new Omai that incorporates only our Wenot open pit deposit at this time. This PEA is an important step forward as it converts our successful exploration programs into a baseline production scenario that shows potential for robust economic development for Omai to once again become a large-scale gold producer, supported by the many benefits of a brownfields project including good road access, a nearby skilled workforce and the strong support of government for re-development."

"Although we have not included the adjacent Gilt Creek Deposit in this PEA economics, we are confident that it will contribute to an overall future mine plan. Since Gilt Creek would be an underground mine, it would have required significant additional engineering, time and cost, and our priority was to establish a baseline valuation for our shareholders. We have fast-tracked the advancement of this project over the past two years and are pleased to deliver these tangible results."

PEA Highlights for Wenot Open Pit

  • After-tax NPV5% of $556 million and after-tax IRR of 19.8% based on $1,950/oz gold with a sensitivity case at $2,200/oz gold giving an after-tax NPV5% of $777 million and IRR of 24.7%

  • Initial capital ("Capex") of $375 million and sustaining capital of $172 million over life-of-mine

  • Projected average gold production of 142,000 oz per year over a 13-year mine life

  • After-tax payback of 4.3 years at base case $1,950/oz gold (3.5 years at $2,200/oz gold)

  • Average cash operating costs of $916/oz gold and all-in sustaining costs of $1,009/oz

  • Cumulative cash flow of $1.07 billion after-tax over 13 years on base case assumptions

  • Total payable gold production of 1.84 million ounces

  • Average head grade of 1.51 g/t Au and 92.5% process recovery

  • Average strip ratio for the open pit life-of-mine estimated at 7.8:1