Basin Gulch historical drilling
Basin Gulch historical drilling totals more than 320 drill holes that tested near-surface gold-silver mineralization on the property.
According to Lannister Mining, those holes returned long gold intervals from surface, including 1.8 g/t gold over 162 meters, plus high-grade intervals such as 156 g/t gold over 3 meters. The company plans to use this historical drilling, with confirmation drilling and new work programs, in a future maiden mineral resource estimate.
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More than 320 historical drill holes have been completed at Basin Gulch. For an exploration-stage project that has not yet reported a resource, that is a large data set: it shows where mineralization has been intersected and where it is still open. Lannister Mining reports the mineralization is open at depth, along strike and untested regionally.
Figures as reported by Lannister Mining, as of November 2026.
Historical results as reported by Lannister Mining. Column depth is drawn to scale from surface.
The five highlight intersections below are the ones Lannister Mining lists for Basin Gulch. Meters and feet are shown exactly as reported. The last column multiplies grade by interval length, a common way to compare a long lower-grade interval with a short high-grade one. It is our calculation from the reported figures, not a company-reported number.
| Gold grade | Interval | Starts | Grade x length |
|---|---|---|---|
| 1.8 g/t Au | 162 m (531.5 ft) | From surface | 291.6 gram-meters |
| 0.66 g/t Au | 326 m (1,069.6 ft) | From surface | 215.2 gram-meters |
| 3.2 g/t Au | 72 m (236.2 ft) | From surface | 230.4 gram-meters |
| 156 g/t Au | 3 m (9.8 ft) | Not stated | 468 gram-meters |
| 25 g/t Au | 14 m (45.9 ft) | Not stated | 350 gram-meters |
Trenches expose and sample bedrock at surface, and at Basin Gulch they reported both gold and silver. Lannister Mining lists four trench highlights, ranging from 34 meters to 159 meters long.
| Gold | Silver | Length |
|---|---|---|
| 62 g/t Au | 32 g/t Ag | 159 m (521.7 ft) |
| 4 g/t Au | 23 g/t Ag | 146 m (479 ft) |
| 5 g/t Au | 54 g/t Ag | 34 m (111.6 ft) |
| 25 g/t Au | 45 g/t Ag | 61 m (200.1 ft) |
Historical drill results are not a mineral resource. Lannister Mining states that Basin Gulch has potential to host a significant maiden mineral resource estimate after expansion and confirmation drilling of historical drill intercepts. Confirmation drilling checks that older results can be reproduced before they are relied on in an estimate.
An interval that starts at surface has no barren rock above it. Three of the five Basin Gulch highlights start at surface, which Lannister Mining links to significant implied mine design optimization flexibility. Any mine design still depends on a resource estimate and engineering work.
g/t means grams of metal per metric tonne of rock. A result of 0.66 g/t gold over 326 meters means the drilled interval averaged 0.66 grams of gold per tonne along 326 meters (1,069.6 feet).
Future drilling will concentrate on additional mineralized target areas within the property, according to Lannister Mining, and two-thirds of the property is still unexplored. See the maiden resource plan for how the pieces fit.
Maps and the original drilling summary are on the Lannister Mining property page. For the bigger picture, return to the Basin Gulch project overview.
Published by Lannister Mining
