Lannister MiningMineral exploration drilling
Mineral exploration drilling at Basin Gulch has produced more than 320 historical drill holes, including long gold intercepts that begin right at surface.
Last updated: November 2026. Published by Lannister Mining.
Lannister Mining reports historical highlights at Basin Gulch including 1.8 g/t gold over 162 meters from surface, 0.66 g/t gold over 326 meters from surface, and 3.2 g/t gold over 72 meters from surface. Shorter, higher-grade intervals include 156 g/t gold over 3 meters and 25 g/t gold over 14 meters.
Drill holes
| Result | Interval length |
|---|---|
| 1.8 g/t Au | over 162 meters (531.5 feet), from surface |
| 0.66 g/t Au | over 326 meters (1,069.6 feet), from surface |
| 3.2 g/t Au | over 72 meters (236.2 feet), from surface |
| 156 g/t Au | over 3 meters (9.8 feet) |
| 25 g/t Au | over 14 meters (45.9 feet) |
Trenches
| Result | Interval length |
|---|---|
| 62 g/t Au and 32 g/t Ag | over 159 meters (521.7 feet) |
| 4 g/t Au and 23 g/t Ag | over 146 meters (479 feet) |
| 5 g/t Au and 54 g/t Ag | over 34 meters (111.6 feet) |
| 25 g/t Au and 45 g/t Ag | over 61 meters (200.1 feet) |
All bars use the same scale, relative to the longest reported interval of 326 meters. Results are historical, as reported by Lannister Mining, and are subject to confirmation drilling. Trench results are surface samples.
Definition
Mineral exploration drilling is the process of drilling holes into the ground to sample rock and measure where minerals occur and at what grade. It is the core activity of any mineral exploration company, including Lannister Mining.
Each result is reported as a grade over a length. A result of 1.8 g/t Au over 162 meters means a 162 meter interval averaged 1.8 grams of gold per tonne of rock.
Reading the results
Three of the five Basin Gulch drill highlights start at surface, and the longest runs 326 meters. Lannister Mining says near-surface mineralization like this gives significant implied mine design optimization flexibility.
The short, high-grade intervals, such as 156 g/t gold over 3 meters, show that higher-grade zones also occur within the system. Both kinds of result will be tested by confirmation drilling.
Procedure
Geologists use mapping, sampling, and historical results to choose where holes should go. At Basin Gulch, more than 320 historical holes guide that choice.
A drill rig cuts into the rock and brings up core or chips from known depths, so each sample can be tied to a position underground.
A laboratory measures the gold and silver content, reported as grams per tonne (g/t). Au is gold and Ag is silver.
Results are reported as a grade over an interval, such as 1.8 g/t Au over 162 meters, along with whether the interval starts at surface.
Confirmation holes check historical results with modern methods; expansion holes test whether mineralization continues into open ground.
Comparison
| Criterion | Drill holes | Trenches |
|---|---|---|
| What it samples | Rock along a hole, from surface down | Rock exposed along a surface cut |
| Basin Gulch count | More than 320 historical holes | Four highlight trenches reported |
| Longest highlight | 326 meters (0.66 g/t Au) | 159 meters (62 g/t Au, 32 g/t Ag) |
| Metals reported | Gold | Gold and silver |
| Role going forward | Confirmation and expansion targets | Surface evidence of near-surface mineralization |
Next
Lannister Mining states that historical drilling and new work programs will be used in a future maiden mineral resource estimate. That requires confirming historical intercepts and expanding drilling into the parts of the property that remain open, including the roughly two-thirds that is unexplored.
Read the full Basin Gulch project overview or return to the Lannister Mining home page.
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