Gold and Silver

Adventus, Salazar secure $235 million to advance Curipamba copper project

Adventus, Salazar secure $235 million to advance Curipamba copper project
Mining News Pro - Adventus Mining and Salazar Resources have secured financing of $235.5 million with which to advance their Curipamba copper project in central Ecuador.

Wheaton Precious Metals (TSX: WPM; NYSE: WPM) will provide a total of $180.5 million under terms of a metals streaming deal, and Trafigura will provide $55 million under terms of an offtake financing agreement.

The Curipamba high grade copper project may be the next modern base and precious metals producer in Ecuador. Adventus is funding exploration and development spending of $25 million over four years. It is also funding capital costs to production and will receive 95% of the free cash flow until all of its investments since 2017 are repaid. After that, cash flows will be shared 75% to Adventus and 25% to Salazar.

The feasibility for Curipamba was completed in October last year. It outlines an open pit mine at the El Domo volcanic massive sulphide (VMS) deposit. The mineralization is largely flat-lying, occurring in one main massive sulphide lens.

The resource estimate completed at the time of the feasibility study contained 9 million measured and indicated tonnes grading 2.11% copper, 0.24% lead, 2.59% zinc, 2.36 g/t gold, and 45 g/t silver. In terms of contained metal, the deposit has 189,400 tonnes of copper, 21,600 tonnes of lead, 231,700 tonnes of zinc, 680,000 oz. of gold, and 13 million oz. of silver.

There are also 1.1 million tonnes at 1.72% copper, 0.41% lead, 2.59% zinc, 1.62 g/t gold, and 32 g/t silver in the inferred total.

The open pit resource includes 7.1 million measured and indicated tonnes at 1.92% copper, 0.3% lead, 2.64% zinc, 2.63 g/t gold and 49 g/t silver. The inferred portion of the pit resource is 300,000 tonnes at 0.34% copper, 0.2% lead, 1.01% zinc, 1.34 g/t gold, and 39 g/t silver.

Adventus also estimated about 1.9 million indicated and 800,000 inferred tonnes that may form the basis for underground mining.

The project economics for Curipamba are positive. The project has an after-tax net present value with an 8% discount of $259 million and an after-tax internal rate of return of 32%. The mine would have a 14-year life, during which time it would produce a total of 100,274 tonnes of copper, 17,344 tonnes of lead, 176,166 tonnes of zinc, 335,928 oz. of gold, and 8.6 million oz. of silver.

The total initial capital expenditures will be $247.6 million, including $51.8 for a conventional open pit mine, $56 million for the processing plant, and $29.2 million for tailings management, reclamation and water treatment. The all-in sustaining cost is estimated at $1.26 per lb. copper-equivalent.

Funding details
Wheaton will provide $175.5 million to be paid upfront in four stages to be used for pre-construction activities at Curipamba. As part of the overall funding, $500,000 will be earmarked for local community development initiatives project prior to production.

Wheaton has agreed to purchase 50% of the payable gold production until 150,000 oz. have been delivered and 33% of the gold for the remaining mine life. It will also purchase 75% of the payable silver until 4.6 million oz. have been delivered and 50% thereafter.

Trafigura is providing $45 million as a senior debt facility, including $5 million for pre-construction activities. The remainder will be paid in two instalments during construction. This facility includes an offtake agreement for certain concentrates over the life of the mine.

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