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Orezone has recently kicked off construction of its fully funded $189 million Bomboré gold project in Burkina Faso, in which it owns a 90% stake. “Projects in West Africa have a long history of being built ahead of schedule and under budget,” Downey tells MINING.COM in an interview. According to Downey, about 11 recent mining projects in West African jurisdictions were completed either on or ahead of schedule and on or under budget, something that makes them increasingly appealing to investors.

Construction progress

The key, Downey says, is that substantially all of the recent projects completed in Burkina Faso were built by engineering, procurement, and construction management (EPCM) contractor Lycopodium Minerals. For this reason, it has also awarded the Bomboré EPCM contract to Lycopodium in January. “With more than 12 mines built in West Africa, Lycopodium’s track record of building efficient mines on time and budget is unparalleled. Lycopodium is very familiar with Bomboré, having performed the 2018 feasibility study, the 2019 updated feasibility study, and the previously completed front-end engineering and design,” says Downey. Lycopodium has a demonstrated track record in Burkina Faso, recently delivering successful EPCM gold projects at the two million oz. per year Sanbrado project for West African Resources, adjacent to Bomboré, the three million oz. per year Houndé project for Endeavour Mining, and the 2.5 million oz. per year Wahgnion project for Teranga Gold Corporation. Significantly, Lycopodium has just completed the 3.3Mtpa Yaouré project for Perseus Mining in Côte d’Ivoire, ahead of schedule and under budget during the covid pandemic. Last year, OreZone released a feasibility study for Bomboré, which outlined a staged oxide-sulphide project producing an average of 117,800 oz. of gold annually at all-in sustaining costs of $730 per oz. The Bomboré gold project is host to a total oxide reserve of 52.5 million tonnes at 0.69 g/t gold for 1.2 million contained oz. with additional sulphide reserves of 17.6 million tonnes grading 1.19 g/t gold for a total of 675,000 oz. These are contained within a measured and indicated resource inventory of 107 million tonnes of oxides at 0.55 g/t gold and 123 million tonnes of sulphides at 0.8 g/t gold.

The associated initial capital for the oxide portion of the project was estimated at $153 million, with an additional $63 million allocated for the sulphide expansion commencing operations in the third year. At a 5% discount rate, the associated net present value has been estimated at $361 million with a 43.8% internal rate of return. Orezone is currently planning on pouring the first gold from Bomboré in the second half of next year.

On January 21, Orezone announced it had secured a financing package totalling $182 million and consisting of $96 million in senior secured loans, a $35 million convertible note, and a $51 million bought-deal equity offering to fund Bomboré into production fully.

The finance package has allowed Orezone to rapidly advance critical items on its to-do list, including ordering long-lead items such as the ball mill in parallel with starting site earthworks.

Downey expects the first concrete pours to take place in June, which according to the so-called Lassonde Curve, should precipitate the start of a corporate rerating and about a 125% rise in equity values as the company enters the construction phase proper.

Orezone has placed orders for long-lead items such as the ball mill, under construction here. (Credit: Orezone Gold)

According to Downey, the construction milestones set the stage of a coveted equity rerating as the project advances closer to production and ever more appealing in the eyes of potential suitors.

“M&A activity takes place when a particular set of conditions are met, including timing. But more importantly, investors are looking for clean projects because they don’t want future value capped through dilutive construction finance packages or by the proponent selling future metal streams. “I think West Africa – and hopefully Bomboré – will be part of future M&A because single asset companies rarely make for great business propositions,” he says. “But before we would consider any type of transaction, we first want to demonstrate the growth potential of the asset.”

Exploration upside

For Orezone to access all areas within the Bomboré mining permit required for the process plant, surface infrastructure, tailings storage facility, and off-channel reservoir, it had to relocate an entire village. The company built over 1,100 private homes, public buildings, and community roads and moved over 370 families into their new homes.

According to Downey, with that significant social investment now complete, it opened up new prospective areas for exploration, which is a key value driver.

“One of our top priorities in 2021 is to start exploratory drilling on high-priority oxide and sulphide targets to extend Bomboré expansion potential,” he says.

Bomboré exploration potential. (Credit: Orezone Gold)

To this end, the company has sold 50% of the silver by-product production to EURO Resources, a 90%-owned affiliate of Iamgold. The streaming deal gave Orezone $7.15 million in exploration funding in exchange for a minimum of 37,500 oz. silver from the mine, capped at 375,000 oz.

“We believe the silver stream is an attractive non-dilutive source of capital to fund exploration on high-priority oxide and newly identified high-grade sulphide targets during construction. Due to the lack of comprehensive silver assays, no silver production was included in the 2019 feasibility study for Bomboré,” says Downey.

The Bomboré project spans over 13kms and is yet to be fully defined. Several isolated mineralized zones are believed to be continuous but have not been drilled sufficiently to confirm such continuity. Two such zones identified as high priority drill targets are the P17 sulphide zone and the hanging wall oxide zone at Maga. For the P17 sulphide zone, recent drilling has defined high-grade sulphide resources at P17S with grades more than double that of the overall average grade for the project. Drilling just north of the P17S reserve pit indicates that the deposit is still open and trending towards the surface at P17, situated 1.2 kilometres to the north. Historical drilling at P17 has returned excellent intercepts, and a sizeable untested gap exists between these two areas. Future drilling is planned to infill this large, underexplored area. For Maga, oxide targets in the hanging wall were previously inaccessible before relocating families to their new resettlement villages. Limited previous drilling and auger drilling and historic artisanal gold workings outside of current reserve pits provide a strong indication that the mineralized structures hosting the current reserves display good lateral continuity and are highly prospective to reserve expansion. High-grade sulphide inferred mineralized zones are also present directly below or along strike of several sulphide pits in the current mineral reserves. The previous drilling suggests that these zones are wide and continuous at Siga South, where the sulphide zone definition drilling is most advanced. The company has identified three primary target areas (Maga, Siga South, and Siga East) for sulphide resource drilling that warrant future exploration. Bomboré also has 14,547 hectares of exploration claims surrounding its mining permit, with numerous prospective targets that have been identified, including the KT and P13 prospects located to the northeast and the southwest of the mining permit, respectively.