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Basin Gulch Gold ProjectWest-central Montana
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Mineral exploration drillingLast updated: November 2026Published by Lannister Mining

Historical drilling at Basin Gulch

Basin Gulch has more than 320 historical drill holes, and Lannister Mining plans to confirm and expand those intercepts with new mineral exploration drilling.

The highlight results below are exactly as listed on the Lannister Mining property page. They are historical: they have not been confirmed by new drilling and are not part of a current mineral resource estimate.

What did historical drilling find at Basin Gulch?

Historical drilling at Basin Gulch returned long gold intercepts from surface, including 1.8 g/t gold over 162 meters and 0.66 g/t gold over 326 meters.

Shorter, higher-grade intervals were also reported, such as 156 g/t gold over 3 meters and 25 g/t gold over 14 meters. Grade in g/t means grams of metal per tonne of rock.

Highlight drill and trench results

Basin Gulch highlight drill hole intersections (gold), as listed by Lannister Mining
Gold gradeLengthStarting depth
1.8 g/t162 m (531.5 ft)From surface
0.66 g/t326 m (1,069.6 ft)From surface
3.2 g/t72 m (236.2 ft)From surface
156 g/t3 m (9.8 ft)Not stated
25 g/t14 m (45.9 ft)Not stated
Basin Gulch trench highlights (gold and silver), as listed by Lannister Mining
Gold gradeSilver gradeLength
62 g/t32 g/t159 m (521.7 ft)
4 g/t23 g/t146 m (479 ft)
5 g/t54 g/t34 m (111.6 ft)
25 g/t45 g/t61 m (200.1 ft)

Highlights are selected intervals and do not represent average grades across the property. Ask for the investor briefing for full context on these results.

Map of historical drilling at the Basin Gulch property
Historical drilling map from Lannister Mining's property materials.

What is mineral exploration drilling?

Mineral exploration drilling recovers rock from below surface so geologists can measure how much metal it contains and how far mineralization extends. Each drill hole gives a sample along its length; many holes together outline the shape of a deposit.

At Basin Gulch, the 320-plus historical holes are the starting dataset. New drilling is needed to confirm those results to current standards before they can support a compliant estimate.

Trenching versus drilling

Trenches expose mineralized rock at surface and are sampled along their length, while drill holes test rock at depth. Basin Gulch has both: trench highlights report gold and silver, and drill highlights report gold.

From historical holes to a Maiden Mineral Resource Estimate

  1. Compile historical data

    Gather the records from more than 320 historical drill holes and the trench sampling.

  2. Confirmation drilling

    Re-drill key historical intercepts to confirm grades and widths.

  3. Expansion drilling

    Test the mineralization where it is open at depth and along strike.

  4. Maiden Mineral Resource Estimate

    Lannister Mining plans to use historical and new data in a future compliant estimate.

Part of our guide to Lannister Mining among mineral exploration companies in the USA and the Basin Gulch project.

Common questions

Short answers here. Every question links to the full Basin Gulch FAQ.

How many drill holes have been drilled at Basin Gulch?

More than 320 historical drill holes have been completed at Basin Gulch, according to Lannister Mining. The company plans to use this historical work, together with new work programs and confirmation drilling, toward a future Maiden Mineral Resource Estimate for the property.

What are the best historical drill results at Basin Gulch?

Highlighted historical intercepts include 1.8 g/t gold over 162 meters from surface, 0.66 g/t gold over 326 meters from surface, 3.2 g/t gold over 72 meters from surface, 156 g/t gold over 3 meters, and 25 g/t gold over 14 meters. These are historical results that Lannister Mining plans to confirm with new drilling.

What is mineral exploration drilling?

Mineral exploration drilling is boring holes into rock to recover samples that show which metals are present, at what grade, and over what length. Results are reported as grade over an interval, such as grams of gold per tonne over a number of meters. At Basin Gulch, more than 320 historical holes have already been drilled.

What does g/t Au mean in drill results?

g/t Au means grams of gold per tonne of rock, the standard grade unit in gold exploration; Ag stands for silver. A result such as 1.8 g/t Au over 162 meters, one of the historical Basin Gulch intercepts, means samples along a 162 meter interval averaged 1.8 grams of gold for each tonne of rock.

What did trenching at Basin Gulch show?

Lannister Mining lists four historical trench highlights: 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 published on the company's property page.

Why does confirmation drilling matter?

Confirmation drilling checks historical results with new sampling so they can support a current resource estimate. Lannister Mining states that Basin Gulch has potential to host a significant Maiden Mineral Resource Estimate after expansion and confirmation drilling of historical intercepts. Until then, historical results should be read as exploration information.

Ask for the Basin Gulch investor briefing

Lannister Mining investor relations: Ken Cotiamco, 604-687-7130, IR@lannistermining.com

Published by Lannister Mining