Bonterra Resources Inc. reports exploration and development updates for a Québec gold portfolio anchored by a central milling facility. News for BONXF commonly covers NI 43-101 mineral resource estimates and technical reports for the Barry, Gladiator, Bachelor, and Moroy deposits, drilling plans at Desmaraisville South, and work at the Phoenix joint venture with Gold Fields.
Company updates also address permitting for the Bachelor Mill and tailings capacity, use of exploration technologies such as hyperspectral core scanning, responsible mineral exploration certification, security-based compensation, and tax matters tied to prior flow-through share financings.
Bonterra Resources (BONXF) released a preliminary economic assessment for Barry estimating C$665 million in after-tax net present value. The estimate uses a 5% discount rate and US$3,500/oz gold; after-tax internal rate of return is 54%, with a 2.5-year payback. These modeled returns are on a 100% project basis, not Bonterra's ownership share.
The toll-milling scenario estimates 696,772 payable gold ounces, averaging 87,097 ounces annually. Initial capital is C$118.7 million, sustaining capital C$354.3 million and closure costs C$7.3 million; all-in sustaining costs are C$3,017/oz. Gold Fields can earn 70% through C$30 million in work expenditures. Neither Gold Fields nor Windfall Mining has endorsed the assessment, which is not an approved joint-venture development decision. Implementation assumes access to infrastructure, permits and third-party arrangements.
Bonterra Resources (BONXF) granted incentive stock options for a total of 1,750,000 common shares on September 21, 2026, under its stock option plan, subject to regulatory approval.
Each option vests immediately, carries an exercise price of $0.155 per share, and is exercisable for five years from the grant date. The options were granted to various employees, officers, and directors. Bonterra describes itself as a Canadian gold exploration company with assets including the Gladiator, Barry, Moroy, and Bachelor deposits, which host 1.63 Moz of Measured & Indicated and 2.17 Moz of Inferred Mineral Resources.
The company also references a 2023 earn-in and joint venture agreement on its Urban-Barry properties, now with Gold Fields as counterparty, under which Gold Fields can earn a 70% interest by funding C$30 million in work expenditures by November 2026.
Bonterra Resources (BONXF) reported preliminary 2026 drilling results from its 100% owned Desmaraisville South Project, including high-grade visible gold at the O'Brien East Deep and Céré-Murgor targets.
At O'Brien East Deep, hole BRDS-26-114 intersected 4.75 g/t Au over 1.4 m, including 16.03 g/t Au over 0.4 m with visible gold, while hole BRDS-26-124A returned 0.71 g/t Au over 2.2 m. At Céré-Murgor, hole BRDS-26-128A cut 0.79 g/t Au over 8.2 m, including 1.33 g/t Au over 2.7 m and 4.05 g/t Au over 0.6 m with visible gold, plus 1.99 g/t Au over 0.7 m. The Mistik 13 target yielded 1.03 g/t Au over 1.5 m in hole BRDS-26-116A.
The 2026 campaign totals 23 holes for 10,136 m, with assays received for 14 holes and additional results pending. Extensive relogging, structural and geophysical studies, and hyperspectral core scanning are being integrated to refine future drill targets. Gold analyses were conducted at third‑party accredited labs under a documented QA-QC program.
Bonterra Resources (BONXF) has fully repaid its non-revolving credit facility with Wexford Capital and affiliates, originally advanced under a March 23, 2026 credit agreement for C$5,000,000.
The facility bore interest at 8.00% per annum plus the six‑month Secured Overnight Financing Rate, with a scheduled maturity of September 23, 2026. Including principal, accrued interest and a C$100,000 commitment fee, Bonterra paid an aggregate C$5,361,469.86. Interest and the commitment fee were settled entirely in cash, and no common shares were issued. Proceeds from the facility were used to indemnify certain flow‑through shareholders for tax liabilities and to fund eligible exploration and development expenditures on the Desmaraisville property. The repayment was funded with proceeds from the company’s rights offering.
Bonterra Resources (OTCQX: BONXF) reported voting results from its 2026 annual general meeting held June 30, 2026, for the fiscal year ended 2025.
Shareholders approved all items, including a six-member board, director re-elections, auditor appointment, and the Omnibus Equity Incentive Compensation Plan, with 101,834,298 shares voted (about 48% turnout).
Bonterra Resources (OTCQX: BONXF) reported depth extension at the Barry gold deposit under its earn-in JV with Gold Fields. Deep drilling between 750–850 m intersected mineralization consistent with Zone H in all five reported holes, including up to 7.59 g/t Au over 1.9 m.
The 2026 MRE outlines 874 Koz open pit and 1,429 Koz underground resources, and the deposit remains open with permits, existing ramp and a 1.2 Mt mining lease.
Bonterra Resources (OTCQX: BONXF) congratulated Gold Fields’ subsidiary Windfall Mining and Cree partners on signing the Uukiimau Impact Benefit Agreement for the Windfall Project in Quebec. Bonterra is partnered with Gold Fields on the adjacent Phoenix JV, and views this as progress for the wider Urban-Barry camp.
Bonterra Resources (OTCQX: BONXF) filed an NI 43-101 Technical Report supporting the Mineral Resource Estimates for the Bachelor and Moroy Deposits in Quebec. The independently prepared report by P&E Mining Consultants is effective February 18, 2026 and available on Bonterra's website and SEDAR+.
Bonterra Resources (OTCQX: BONXF) announced that Marc-André Pelletier resigned as President, CEO and Director, effective May 31, 2026, to pursue another opportunity. He will remain as a consultant through December 31, 2026 to support transition, while Chairman Cesar Gonzalez becomes Interim CEO.
The Board will conduct a CEO search and states that strategic priorities and operations remain unchanged.
Bonterra (OTCQX: BONXF) announced inclusion of Mining Lease 886 (Barry Mining Lease) into the Phoenix JV with Gold Fields, following Gold Fields' election for no additional consideration under the JV agreement. The Barry lease allows extraction of 1.2 million tonnes and is valid until 2028 (renewable).
The 2026 Mineral Resource Estimate totals measured and indicated and inferred resources across open pit and underground domains, and Gold Fields retains rights to earn a 70% interest by spending C$30M (min C$10M/year).