Name of the Project
Houndé gold project.

Location
The project is located within the Birimian greenstone belt, in Burkina Faso, just south of Semafo’s Mana mine and about 250 km south-west of the capital city, Ouagadougou, and benefits from excellent existing infrastructure.

Client
Houndé Gold Operation, Endeavour Mining’s Burkina Faso operating subsidiary.

Project Description
With its robust grade and low cash costs, Houndé ranks among West Africa’s highest-quality gold development projects.

Once in full production, Houndé is expected to become Endeavour’s flagship low-cost operation, with a life-of-mine of more than ten years.

Endeavour Mining expects to produce an average of 190 000 oz/y at an all-in sustaining cost (AISC) of $709/oz over the life-of-mine. Over its first four years, Houndé’s average production is expected to be 235 000 oz/y at an AISC of $610/oz.

A 34% increase in the estimated mineral reserve has resulted in greater output expectations and a longer mine life.

The project has proven and probable reserves of 30.6-million tonnes, with an average grade of 2.1 g/t gold.

The updated mine plan defines a large-scale openpit mine that provides 29.7-million tonnes of ore at 2.15 g/t of gold and 251-million tonnes of waste for a strip ratio of 8.4:1.

The enhanced production, relative to the November 2013 feasibility study, is a result of the exploration additions from 2014, and an optimisation of the mine plan to access high-grade and shallow gold-mineralisation during the initial years of the mine life.

The processing plant consists of a three-million-tonne-a-year gravity circuit/carbon-in-leach plant with a semiautogenous ball crushing comminution circuit.

Additional infrastructure includes the construction of the 38-km-long, 91 kV overhead power line.

The Houndé exploration tenement covers more than 1 075 km2 within the highly prospective Birimian greenstone belt. Following a two-year period of no drilling, exploration activities will resume in 2017 with a $5-million programme totalling an estimated 45 000 m.

The focus will be on delineating high-grade targets, such as Bouere and Kari Pump, in addition to performing reconnaissance drilling.

Openpit prestrip mining at the main Vindaloo openpit, adjacent to the processing facility, also started in late 2016.

The enlarged reserve will result in total gold production of about 1.9-million ounces over a ten-year mine life, compared with the originally estimated 1.4-million ounces over an eight-year mine life.

Potential Job Creation
More than 2 000 personnel, including contractors, are on site, more than 94% of whom are Burkinabe.

Net Present Value/Internal Rate of Return
The internal rate of return has increased from the previously estimated 22.4% to 32% at a gold price of $1 250/oz.

The project’s after-tax net present value has been estimated at $359-million at the same gold price.

Value
The updated capital cost is estimated at $328-million, including contingency, working capital and import duties.

This represents a 3.2% increase over the $315-million estimate in the November 2013 feasibility study.

Duration
The Houndé mine began processing ore ahead of schedule on September 25, 2018, and achieved its first gold pour on October 18.

Latest Developments
The measured and indicated resources at the Houndé mine have increased by 554 000 oz to 4.5-million ounces, following further resource delineation at the Kari Area.

The resource increase includes extensions for the Kari West and Kari Centre deposits, as well as maiden resources for the adjacent Kari Gap, Kari South and Kari Pump NE deposits.

The Kari Area now accounts for 57% of the Houndé measured and indicated resource, with 2.5-million ounces of indicated resources discovered over the past three years.

The Kari Area hosts high-grade deposits, with about 84% of indicated resources grading more than 2 g/t gold, amounting to 2.1-million ounces.

An exploitation licence has been awarded for the Kari Area and mining has started at the Kari Pump deposit.

Maiden reserves for Kari West, along with an updated Houndé mine plan, are expected to be published in the third quarter, followed by maiden reserves for Kari Centre and Kari Gap in the fourth quarter.

An additional 20 000 m drill programme is expected to start in the second half of this year. 

Key Contracts and Suppliers
None stated.

On Budget and on Time?
The project has been completed ahead of schedule and below budget.

Contact Details for Project Information
Endeavour Mining, tel +44 203 640 8665 or email info@endeavourmining.com.