Thor Explorations Announces Further High-Grade Mineralisation Intersected Below Segilola Open Pit
Thor Explorions reported 9.0m true width at 3.01 g/t Au at Segilola, marking an incremental step toward an underground resource without a transformational gram-metre upset.
Thor Explorations Ltd. (THX) released diamond drill results from beneath the operating Segilola open pit in Nigeria, targeting the northern and southern zones. The company aims to define an updated resource by the end of 2026, with drilling continuing to extend high-grade mineralization and potentially extend mine life.
Highlighted intercepts (downhole length / true width / grade) include: - SNMDD089: 19.4 m @ 3.01 g/t Au (true width 9.0 m) - SNMDD166: 5.3 m @ 5.66 g/t Au (true width 3.3 m) - SNMDD171: 2.0 m @ 9.27 g/t Au (true width 1.6 m) - SNMDD170: 3.4 m @ 7.58 g/t Au (true width 2.2 m) - SNMDD178: 1.2 m @ 11.31 g/t Au (true width 0.7 m) - SNMDD179: multiple intervals, e.g., 3.3 m @ 5.99 g/t and 5.5 m @ 2.28 g/t (true width not stated)
Historical context from the 2018 Preliminary Economic Assessment (PEA) included 28 koz indicated at 9.4 g/t and 90 koz inferred at 7.9 g/t.
Thor Explorations Ltd. (THX) is currently a producer, with its Segilola mine generating 91.9 koz of gold in 2025. However, the company faces a declining open-pit production profile, with 2026 guidance set at 75–85 koz. The market’s primary focus is mine-life extension, and these recent results represent the first step toward proving an underground resource that could replace the open pit.
The intercepts do not constitute a new discovery, as the UG resource already exists with 90 koz in inferred resources. Instead, the results serve to de-risk the project and offer modest growth. While the gram-metre values are considered good, the narrow widths require careful mine-planning to prove economic viability.
The company’s share price has been in a prolonged downtrend from $1.76 to $1.01, with the news arriving near a low. If the market viewed the Segilola UG story as speculative, these results may provide mild support. However, the results do not materially alter the investment thesis; the Douta PFS, with an NPV of $908M, remains the dominant value driver. Additionally, the cash-rich balance sheet of $159M and no debt already covers the Douta capital requirement of $254M without external dilution, making the Segilola UG resource a secondary catalyst.
Given that the intercepts are in line with the known UG grade of 8–9 g/t and no significant length or grade has emerged, the release is routine incremental news. It is positive because it confirms mineralisation continues and is likely to add ounces, but it is not transformational.
Thor Explorations Ltd. (THX) is a West Africa-focused gold producer and developer operating the Segilola open-pit gold mine in Nigeria. The mine produced 91.9 koz of gold in 2025, with guidance set for 75–85 koz in 2026 at an all-in sustaining cost (AISC) of $1,000–1,200/oz. The asset is debt-free, supported by $159.5M in cash at Q1 2026, and the company pays a quarterly dividend of C$0.0125/share.
The company’s primary growth asset is the 100%-owned Douta gold project in Senegal. A preliminary feasibility study (PFS) indicates a post-tax NPV₅% of US$908M and an internal rate of return (IRR) of 61% at a gold price of $3,500/oz. The project requires initial capital expenditure of $254M and features a 12.6-year mine life producing 1.0 moz of gold. Fully funded from cash reserves, first production is targeted for early 2028.
Thor Explorations also maintains an exploration portfolio comprising early-stage gold projects in Côte d’Ivoire, including Guitry and Marahui, as well as regional targets near Segilola. The company cites a strong balance sheet and deep management experience.