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Drill history

Basin Gulch historical drilling and trench results

Last updated: November 2026

Basin Gulch has been tested by more than 320 historical drill holes. Lannister Mining reports highlights including 1.8 g/t gold over 162 meters from surface, and plans to use this historical drilling with new work programs in a future maiden mineral resource estimate.

What are the best historical drill results at Basin Gulch?

The strongest long intervals reported by Lannister Mining start at surface: 1.8 g/t gold over 162 meters, 0.66 g/t gold over 326 meters, and 3.2 g/t gold over 72 meters. Shorter high grade intervals include 156 g/t gold over 3 meters and 25 g/t gold over 14 meters.

Long intervals of mineralization starting at surface are why the company describes Basin Gulch as high grade gold and silver mineralization near surface with significant implied mine design optimization flexibility.

Lannister Mining: Basin Gulch historical drill hole highlights (gold)
Gold gradeIntervalStarting 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
Lannister Mining: Basin Gulch historical trench highlights
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)

Figures are stated exactly as reported in Lannister Mining materials. They are historical results and are not a current mineral resource. g/t means grams per tonne.

More than 320 historical drill holes. Not mined out.
Lannister Mining

How to read a drill intercept

A result such as 1.8 g/t gold over 162 meters means the rock across that 162 meter length of drill hole averaged 1.8 grams of gold per metric tonne. Intervals that begin at surface are especially relevant for potential open pit designs, because there is little or no waste rock to remove first.

Long, steady intervals often matter more than a single short high grade spike, since a resource depends on volume as well as grade.

From historical holes to a maiden resource

  1. Compile and review the 320+ historical drill holes and trench data.
  2. Drill confirmation holes near historical intercepts with modern methods.
  3. Drill expansion holes where mineralization is open at depth and along strike.
  4. Test additional target areas in the unexplored two-thirds of the property.
  5. Combine historical and new data in a maiden mineral resource estimate.

Are historical results the same as a mineral resource?

No. Historical drill results record past work, and they are not a current mineral resource under NI 43-101 or S-K 1300. Lannister Mining describes expansion and confirmation drilling of historical drill intercepts as the path to a significant maiden mineral resource estimate.

For background on the reporting standards, see the SEC rule on modernized mining property disclosure (S-K 1300). To see where this work sits in the bigger picture, read the stages of mineral exploration.

Keep reading

How many holes have been drilled at Basin Gulch?
More than 320 historical drill holes have been completed at Basin Gulch. The company plans to use this historical drilling, together with new work programs, in a future maiden mineral resource estimate.
What are the best historical drill results at Basin Gulch?
Historical highlights reported by the company 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.
What did trenching show at Basin Gulch?
Historical trench highlights reported by the company include 4 g/t gold and 23 g/t silver over 146 meters, 5 g/t gold and 54 g/t silver over 34 meters, and 25 g/t gold and 45 g/t silver over 61 meters. Trenching samples rock exposed at surface.
Are historical drill results the same as a current mineral resource?
No. Historical drill results are records of past work and are not a current mineral resource. Lannister Mining plans expansion and confirmation drilling of historical intercepts, alongside new work, before a maiden mineral resource estimate can be prepared.
What is confirmation drilling?
Confirmation drilling means drilling new holes near historical ones to check that past results can be reproduced with modern methods. At Basin Gulch, the company describes expansion and confirmation drilling of historical intercepts as a step toward a significant maiden mineral resource estimate.
What does g/t mean in gold drill results?
g/t means grams per tonne, the number of grams of metal in one metric tonne of rock. A result such as 1.8 g/t gold over 162 meters describes the average grade across that length of drill core. Longer intervals at steady grade usually matter more than a single short high grade sample.