Technical summary
Basin Gulch technical summary
Published by Lannister Mining. Last updated November 2026.
Historical drilling at Basin Gulch returned intersections such as 1.8 g/t gold over 162 meters from surface, according to Lannister Mining.
What do the historical drill results at Basin Gulch show?
The Basin Gulch Brief reproduces the historical drill highlights exactly as Lannister Mining reports them. They show long, near-surface gold intervals, such as 0.66 g/t Au over 326 meters from surface, alongside short high grade intervals, such as 156 g/t Au over 3 meters. All are historical and are planned for confirmation drilling.
| Gold grade (g/t) | Length (m) | Length (ft) | From surface | Gram-metres |
|---|---|---|---|---|
| 1.8 | 162 | 531.5 | Yes | 291.6 |
| 0.66 | 326 | 1,069.6 | Yes | 215.16 |
| 3.2 | 72 | 236.2 | Yes | 230.4 |
| 156 | 3 | 9.8 | Not stated | 468 |
| 25 | 14 | 45.9 | Not stated | 350 |
Source: Lannister Mining property page, as of November 2026.
What did surface trenching return?
Lannister Mining also reports four trench highlights that include both gold and silver. The figures below are shown exactly as the company publishes them, without rounding or adjustment.
| Gold (g/t) | Silver (g/t) | Length (m) | Length (ft) |
|---|---|---|---|
| 62 | 32 | 159 | 521.7 |
| 4 | 23 | 146 | 479 |
| 5 | 54 | 34 | 111.6 |
| 25 | 45 | 61 | 200.1 |
What is a gram-metre, and why use it?
A gram-metre is the grade of an interval in grams per tonne multiplied by its length in meters. It lets a reader compare a long, lower grade interval with a short, higher grade one on a single scale. At Basin Gulch, the 162 meter interval at 1.8 g/t Au works out to 291.6 gram-metres, and the 3 meter interval at 156 g/t Au works out to 468.
Gram-metres do not account for true thickness, continuity or recovery, so they are a screening aid rather than a valuation. Use the worksheet below to check any interval.
How does historical data become a maiden resource?
Lannister Mining states that historical drilling and new work programs will be used in a future Maiden Mineral Resource Estimate. The sequence the company describes is:
Compile historical drilling
Bring together the results of more than 320 historical drill holes and trenches.
Confirmation drilling
Drill to confirm historical intercepts so they can support modern reporting.
Expansion drilling
Test the mineralization where it is open at depth, along strike and in multiple directions.
Additional target areas
Concentrate future drilling on other mineralized targets across the property.
Maiden Mineral Resource Estimate
Combine historical and new data into the first resource estimate for Basin Gulch.
Why does compliant reporting matter to investors?
Lannister Mining states there is a clear premium in the market for SK1300 Technical Report and NI 43-101 Technical Report compliant gold and silver ounces in the USA. Readers can learn how the US standard works from the SEC mining property disclosure rules (S-K 1300). The highlighted Basin Gulch results above are historical and are not a current resource.
Back to the overview: an exploration joint venture in Montana at Basin Gulch.
Common questions
How many drill holes are at Basin Gulch?
Lannister Mining reports more than 320 historical drill holes at Basin Gulch. The company plans to use this historical drilling together with new work programs in a future Maiden Mineral Resource Estimate, after expansion and confirmation drilling of historical intercepts.
See this answer in the full FAQWhat are the best historical drill results at Basin Gulch?
Lannister Mining highlights historical intersections including 1.8 g/t Au over 162 meters from surface, 0.66 g/t Au over 326 meters from surface, 3.2 g/t Au over 72 meters from surface, 156 g/t Au over 3 meters and 25 g/t Au over 14 meters. All are historical results.
See this answer in the full FAQWhat did trenching at Basin Gulch show?
Lannister Mining reports trench highlights of 62 g/t Au and 32 g/t Ag over 159 meters, 4 g/t Au and 23 g/t Ag over 146 meters, 5 g/t Au and 54 g/t Ag over 34 meters, and 25 g/t Au and 45 g/t Ag over 61 meters. Figures appear exactly as the company reports them.
See this answer in the full FAQWhat does g/t mean in gold drill results?
g/t means grams per tonne: the grams of gold or silver in one metric tonne of rock. A result such as 1.8 g/t Au over 162 meters means the sampled interval averaged 1.8 grams of gold per tonne across 162 meters of drilling. Grade multiplied by length gives a gram-metre value.
See this answer in the full FAQAre the Basin Gulch drill results NI 43-101 compliant?
The highlighted results are historical. Lannister Mining states that historical drilling and new work programs will be used in a future Maiden Mineral Resource Estimate, and it points to a market premium for SK1300 and NI 43-101 compliant ounces in the USA. Confirm current technical reporting status directly with the company.
See this answer in the full FAQIs the Basin Gulch mineralization open?
Yes, according to Lannister Mining. The company states the gold-silver mineralization is open in multiple directions and at depth, open along strike and untested regionally. That is why future drilling is planned to focus on additional mineralized target areas within the property.
See this answer in the full FAQHow do I get the full technical data on Basin Gulch?
Start with the Lannister Mining USA investor presentation, dated June 2026, on lannistermining.com, then request further information through the contact page. The company property page includes maps of the Montana location and drill layout. Detailed datasets for partner review are arranged directly with Lannister Mining.
See this answer in the full FAQRequest the technical data
Investors and potential exploration partners can reach Lannister Mining directly. Investor relations: Ken Cotiamco, 604-687-7130, IR@lannistermining.com.