B2Gold Announces Goose Project Update; Project Construction and Development on Track for First Gold Production in Q2 2025;

13 September 2024

Goose Project Update

All planned construction year to date in 2024 has been completed and project construction and development continues to progress on track for first gold pour at the Goose Project in the second quarter of 2025 followed by a ramp up to commercial production in the third quarter of 2025: B2Gold anticipates that once in commercial production the Goose mine will produce approximately 310,000 ounces of gold per year over the first full five years. Sealift offloading performance has increased this summer due to a newly constructed barge ramp, with seven supply vessels received at the Marine Laydown Area (“MLA”), ahead of schedule, as of early September 2024. Three ships have already completed offloading of supplies and departed Bathurst Inlet ahead of schedule. All vessels are expected to have completed the offload of supplies to the MLA by October 2024.

Total Goose Project construction, mine development, and sustaining capital cash expenditures (“Construction and Mine Development Cost”) before first gold production estimate is now C$1,540 million, a C$290 million (or 23%) increase from the previous estimate: Approximately 52% (or C$150 million) of the increase in the estimated total Goose Project Construction and Mine Development Cost before first gold production can be attributed to the one quarter delay in first gold production previously disclosed, combined with the acceleration of capital items that were previously anticipated to occur after first gold production. The acceleration of certain capital items is expected to make the Goose Project a more reliable and de-risked operation upon mill startup. The accelerated capital items include accelerated purchases of mining equipment versus the previous estimate to ensure continued growth in mining rates through 2025, the building of an accommodation complex at the MLA which will reduce ongoing annual costs associated with running the Winter Ice Road (“WIR”), the construction of critical infrastructure at the Goose site, inclusive of warehousing, maintenance, mine dry facility, camp facility expansion, and the design acceleration of a reverse osmosis plant to optimize water management and lower ongoing operating costs. Approximately 24% (or C$70 million) of the increase in the Construction and Mine Development Cost can be attributed to the increased cost of the logistics of shipping materials to the Goose Project site.

The construction cash expenditures estimate is now C$1,190 million (of the Total Goose Project Construction and Mine Development Cost of C$1,540 million): Upon completion of the 2024 WIR, the Company undertook a cost to completion review following a detailed assessment of all the materials transported to the Goose Project along the WIR from the MLA. The Company expects that construction cash expenditures will be C$1,190 million, a C$140 million increase from the previous estimate, the majority of which is due to additional costs associated with the logistics of shipping materials to the Goose Project via air transport and the acceleration of certain capital items which were required to fix design deficiencies and replace inadequate equipment that was inherited upon acquisition of the Goose Project.

The mine development and sustaining capital cash expenditures estimate is now C$350 million ( of the Total Goose Project Construction and Mine Development Cost of C$1,540 million) : The majority of the C$150 million increase from the previous estimate is related to one additional quarter of expenditures being incurred before first gold production combined with an increase in direct open pit and underground mining costs. During the second quarter of 2025, the Company anticipates completing the mining of the Echo open pit and commencing stope production from Umwelt underground, and will accelerate sustaining capital expenditures previously assumed to occur after first gold production to ensure that stockpiles are robust to sustain a consistent mill feed.