TNT Mines’ (ASX:TIN) ongoing drilling at Eureka project has delivered high-grade hits that extend mineralisation to the north and south of the existing pit area.

Significant results from the first 26 holes of the planned 91 hole reverse circulation program at the Eureka project near Kalgoorlie are:

  • 34m grading 1.75 grams per tonne (g/t) gold from 103m including 3m at 7.89g/t gold (WRRC0081);
  • 4m at 6.56g/t gold from 74m including 2m at 11.8g/t gold (WRRC0082); and
  • 14m at 2.09g/t gold from 51m including 4m at 5.48g/t gold (WRRC0001).

Grades above 5g/t gold are generally considered to be high-grade.

These top hits are all located beyond the south end of the current pit, which augurs well for the continuation of mineable mineralisation.

“While early on in the program, with less than 30% of the entire program’s assay results returned, so far we have been surprised with the width of mineralisation encountered south of the pit in holes WRRC0081and WRRC0001,” chairman Alex Hewlett said.

“Both holes have meaningfully grown the footprint of the mineralisation at Eureka to the south, and we hope to further drill test this zone as a result of these intervals.

“Additionally, the arrival of a more powerful RC drill rig late last week will enable testing for any high grade down dip potential of the Eureka gold system.”

tnt mines eureka section gold
Contoured grade metre long section at Eureka main pit area Pic: Supplied

TNT has planned a follow-up deeper RC program to test for potential extensions of previously intersected high-grade gold to the north of the pit along with additional drilling to further test the southern extension.

This is in addition to the company drilling the remaining holes in the current program, which is expected to be completed in late February.

Gold drilling and next steps

TNT has completed 65 holes totalling 7,489m to date and expects the completed program to have a total meterage of about 11,400m, an increase of 1,200m on the initial design.

Drilling has extended the known mineralisation at Eureka by more than 100m to the south with room for further growth as it remains open in that direction.

Separately, six other holes drilled in close proximity to the Southern pit wall to test an interpreted western offset to known lode also intersected mineralisation.

However, these holes were drilled too far west and did not intersect the main lode reported in WRRC0001.

The company is now compiling an improved understanding of the overall controls of mineralisation at Eureka.

Once drilling at Eureka is completed, drill crews will be mobilised to the Warriedar project site to carry out an initial program that includes Mt Laws resource definition drilling and testing the current known extents of the high-grade Reid’s Ridge mine lode.



This article was developed in collaboration with TNT Mines, a Stockhead advertiser at the time of publishing.


This article does not constitute financial product advice. You should consider obtaining independent advice before making any financial decisions.