Tower Builds on Drilling Success at Rabbit North, Discovers New Gold Trend South of Blue Sky in Hole 061 and Intersects 19.0 m of 4.93 g/t Au in 50-m Step-Out Hole 062 at Thunder North
Tower Builds on Drilling Success at Rabbit North, Discovers New Gold Trend South of Blue Sky in Hole
061 and Intersects 19.0 m of 4.93 g/t Au in 50-m Step-Out Hole 062 at Thunder North
Vancouver, B.C. – July 22, 2025 - Tower Resources Ltd. (“Tower” or the “Company”) (TSXV: TWR) is
pleased to report the gold results from the two remaining holes, Nos. RN-25-061 and and 062, of the four-
hole May drilling program on the Company’s Rabbit North property in the heart of the Kamloops mining
district (see Fig. 1).
Hole 061 intersected 18 m of 0.81 g/t Au in shear-resistant Nicola tuff-breccia ~70 m above the more
favourable Durand diorite host rock of the Blue Sky discovery intersection in Hole 055 (31.5 m of 4.15 g/t
Au; see December 23, 2024 news release) and 13.05 m of 1.76 g/t in a new gold zone within a more
shear-receptive ash tuff horizon 100 m to the south (see Figs. 2 and 3).
Hole 062, a 50-m step-out at Thunder North east of Hole 056 (15.85 m of 5.80 g/t Au; see January 08,
2025 news release), returned a very similar 19.0 m intersection averaging 4.93 g/t Au.
Joe Dhami, Tower’s President and CEO, emphasizes the value of Rabbit North’s location in assessing the
potential economic importance of Tower’s remarkable exploration success: “The Kamloops District is
known as one the lowest cost of production regions in BC and now Tower has compiled over 10,000 meters
of strategically drilled and assayed data. Tower's high grade gold results have solidified our early-stage
exploration into an unrisked phase where scale, grade and strike orientation are no longer theoretical.”
Figure 2 – “Horsetail” shear zone model for the Rabbit North gold system. See Tables 1 and 2 for
detailed Au analyses
Overview
The primary objective of the small May drilling campaign was to determine the strike and dip of the Blue
Sky gold trend to aid in siting holes for a much larger drilling program that the Company is currently
planning, especially longer, deeper holes given the great depth extent that is usual for such shear-hosted
gold mineralization and the apparent subvertical attitude of the zone. Each of the three test holes at Blue
Sky, Nos. 059 to 061, successfully intersected the gold zone. The three intersections, together with the
original discovery intersection in Hole 055, indicate that the Blue Sky shear zone strikes northeast and
suggest that it dips steeply northwest (see Fig. 3).
Figure 3 – Detailed hole location and geological map of the Blue Sky gold trend. See Figure 2 for
bedrock lithologies and Table 1 for detailed Au analyses. The most significant Au
intersections (red) are projected vertically to surface. Those from Holes 061 are marked by
blue stars and highlight intersections from previous holes are marked by yellow stars.
Drilling is showing that the diorite/volcaniclastic andesite (pink/green) contact is more
complex than mapped.
The drilling also showed that the contact between the Durand diorite intrusion and Nicola volcaniclastics
is much more convoluted than inferred from previous mapping (see Figs. 2, 3), with a slice of Nicola rocks
either thrust or embayed southeastward into the stock roughly parallel to the drill holes. As the Blue Sky
shear zone strikes northeast across this embayment, the gold intersections in the drill holes are variably
hosted by diorite or Nicola volcaniclastics. Since the diorite is a more favourable host rock, apparently
due to its high primary iron oxide (magnetite) content, the Au grades of the intersections vary significantly.
The best Blue Sky intersections occur where the shear zone is confined to the diorite, i.e. at depth and
to the east as demonstrated by the strengths of the deepest (31.5 m @ 4.15 g/t Au in Hole 055) and
easternmost (6.02 m @ 23.63 g/t Au in Hole 060) intersections to date.
Hole 061 Results
Hole 061 was drilled parallel to and roughly in line with discovery hole No. 055 but in the opposite
direction (southeast rather than northwest) and at a shallower dip (-45○ versus -60○). It was collared in
the Nicola embayment and remained in this narrow embayment for ~250 m of its 271.0 m length whereas
Hole 055 was in Durand diorite for the top 286 metres. Hole 061 entered the Blue Sky zone 116.5 m
down-hole and remained in it for 18.25 metres. The intersection is as uniformly auriferous throughout as
the one in Hole 056 but at a low average grade of 0.81 g/t Au (see Table 1).
Total
Depth
(m)
Mineralized Interval(s)
Average
Au
Grade
(g/t) Hole No.
Easting
(m)
Northing
(m)
Azimuth
(°)
Dip
(°)
Mineralized
Zone(s)
From
(m)
To
(m)
Length
(m)
RN24-055 663433 5607852 314.7 -60 332.0 Above Blue Sky 79 83.0 4.0 2.05
Above Blue Sky 92.3 95 2.7 3.15
Above Blue Sky 121.5 123.3 1.8 8.48
Above Blue Sky 152.75 155.5 2.8 1.80
Above Blue Sky 196.4 198.0 1.6 4.66
Above Blue Sky 201 211.6 10.6 1.54
Above Blue Sky 231 240.0 9.0 2.92
Blue Sky 255 286.5 31.5 4.15
Including 278.7 279.7 1.0 17.10
RN25-059 663389 5607884 315 -45 201.9 Undetermined 104.92 109.00 4.08 2.05
Undetermined 121.08 123.08 2.00 1.38
Blue Sky 137.40 145.00 7.60 3.28
Including 137.40 138.37 0.97 16.20
Undetermined 201.00 201.90 0.90 4.85
RN25-060 663308 5608058 135 -45 244.0 Undetermined 45.00 47.69 2.49 1.75
Undetermined 51.70 53.88 2.18 4.51
Undetermined 58.30 60.12 1.82 1.78
Undetermined 64.50 67.57 3.07 1.49
Blue Sky 84.14 90.16 6.02 23.63
Including 84.14 88.95 4.81 28.64
Including 87.00 88.95 1.95 51.30
Undetermined 171.00 178.12 7.12 1.49
Undetermined 207.00 210.00 3.00 2.25
RN-25-
061 663282 5608004 130.00 -45 271.0 Blue Sky 116.50 134,75 18.25 0.81
Total
Depth
(m)
Mineralized Interval(s)
Average
Au
Grade
(g/t) Hole No.
Easting
(m)
Northing
(m)
Azimuth
(°)
Dip
(°)
Mineralized
Zone(s)
From
(m)
To
(m)
Length
(m)
Undetermined 160.00 161.10 1.10 3.24
Undetermined 210.80 213.00 2.20 5.46
Undetermined 220.39 220.89 0.50 4.10
Undetermined 231.00 245.05 13.05 1.76
Table 1 – Significant gold intercepts of the shear-hosted type from the Blue Sky trend. Gold-bearing
intercepts of the porphyry Cu-Au type are excluded. Gold values are uncut. Samples with
Au grades greater than 15 g/t are shown individually. Core size was NQ. Core intervals are
measured down-hole. True widths have not been determined.
The limited grade of the Blue Sky zone in Hole 061 appears to be due, in large part, to inhospitable
stratigraphy as the deformation and mineralization occur within lapilli tuff and coarser, shear-inhibiting
tuff-breccia ‒ the dominant phase of the Nicola volcaniclastics ‒ rather than being concentrated in finer-
grained, more shear-susceptible and gold-prospective crystal and ash tuff like the strata that host the
Lightning, Thunder and Thunder North gold zones (see Fig. 2).
Three thin layers of fine ash tuff intersected further down hole yielded much stronger Au analyses of 3.24
g/t over 1.1 m, 5.46 g/t over 2.2 m and 4.10 g/t over 0.5 metres (see Table 1). Most importantly, a thicker
ash tuff horizon beginning at 231.0 m down-hole ‒ approaching the contact with the Durand diorite at
254 m ‒ averaged 1.76 g/t Au over 13.05 metres (see Figs. 3, 4). Given its significant width and ~100 m
separation from the Blue Sky zone, this intersection is inferred to represent a new mineralized trend
south of and subparallel to Blue Sky. Interestingly, the intersection is coincident with the shear-
controlled paleovalley that was infilled a few million years ago by Chilcotin basalt lava flows and extends
southwest from the Durand Stock through the Thunder North area (see Fig. 2), suggesting that the new
discovery may have significant continuity.
Figure 4 – Quartz-pyrite vein in altered and mineralized ash tuff at 240.1 m in Hole 061, within the
new gold trend intersected south of Blue Sky.
Although generally unsheared the coarse tuff-breccia, along with the finer-grained Nicola tuffs and the
Durand diorite, is significantly anomalous in gold throughout the drill area. In most drill holes, less than
10% of the core samples have reported background levels of Au (<5 ppb) and many ‒ in some cases
most ‒ contain more than 100 ppb (0.1 g/t). This pervasive infusion of gold is a testament to the
strength of the new gold system that Tower has unearthed at Rabbit North.
Hole 062 Results
Hole 062 was drilled as a 50 m step-out from Hole 056 on the Thunder North zone (see Fig. 5) with the
objective of extending th gold zone to the east. Remarkably, the hole essentially duplicated the
impressive Hole 056 results, intersecting 19.0 m of 4.93 g/t Au (see Table 2), again with exceptionally
high-grade sections including 0.5 m of 73 g/t Au and 0.55 m of 64 g/t Au.
Figure 5 – Detailed hole location and geological map of the Thunder North gold trend. See Figure 2
for bedrock lithologies and Table 2 for detailed Au analyses. The most significant Au
intersections (red) are projected vertically to surface. The Hole 062 intersection is marked
by a blue star and highlight intersections from previous holes are marked by yellow stars.
Total
Depth
(m)
Mineralized Interval(s)
Average
Au Grade
(g/t) Hole No.
Easting
(m)
Northing
(m)
Azimuth
(°)
Dip
(°) Mineralized Zone(s)
From
(m)
To
(m)
Length
(m)
RN23-039 662871 5607561 144 -45 356.0 Undetermined 142.7 145.7 3.0 4.20
Thunder North 163.5 173.7 10.2 1.46
Thunder North 177.2 192.8 15.6 2.41
Including 191.0 191.8 0.8 25.40
RN23-040 662908 5607578 142 -45 263.0 Thunder North 188.7 196.3 7.7 1.42
RN24-056 663014 5607544 143 -60 200.0 Thunder North 139.50 155.35 15.85 5.80
Including 139.50 144.00 4.50 13.97
Including 139.50 140.25 0.75 65.30
Including 151.00 155.35 4.35 5.70
Total
Depth
(m)
Mineralized Interval(s)
Average
Au Grade
(g/t) Hole No.
Easting
(m)
Northing
(m)
Azimuth
(°)
Dip
(°) Mineralized Zone(s)
From
(m)
To
(m)
Length
(m)
RN-25-062 663023 5607581 143 -50 236.0 Undetermined 26.35 29.1 2.75 3.22
Undetermined 101.1 110.89 9.79 0.52
Thunder North 172.00 191.00 19.00 4.93
Including 171.00 177.60 5.60 9.47
which includes 174.23 124.80 0.57 71.40
and 181.00 183.00 2.00 3.18
and 189.00 191.00 2.00 16.87
which includes 189.00 189.50 0.50 64.30
Table 2 – Significant gold intercepts of the shear-hosted type from the Thunder North trend. Gold-
bearing intercepts of the porphyry Cu-Au type are excluded. Gold values are uncut. Samples
with Au grades greater than 15 g/t are shown individually. Core size was NQ. Core intervals
are measured down-hole. True widths have not been determined.
Thunder North has now been traced continuously eastward from 2023’s discovery hole No. 039, with
only a minor interruption resulting from an isolated monzonite dyke at Hole 042, for more than 250 m
(see Fig. 5) ‒ roughly the length of three football fields ‒ at increasingly higher grades. It is wide open
to the east and at depth and is now ready for more systematic definition drilling.
Next Steps
Tower’s four-hole May drilling program has successfully expanded and increased the tenor of Tower’s
promising Blue Sky and Thunder North gold discoveries to the point where both zones are now ready for
more systematic definition drilling in addition to continued step-out drilling, especially to the east. Further
testing is also required to evaluate the new gold discovery south of Blue Sky and 2023’s Thunder discovery
south of Thunder North (see Fig. 2) as well as to determine the depth extent of the original Lightning Zone
that Tower discovered in 2021. The much larger drilling program that Tower is currently planning will be
designed to address most of these needs.
Methods and Qualified Person
The drill core was logged at Tower's leased, fully equipped core facility near Kamloops by and/or under
the direction Matthew Husslage, P.Geo. Mr. Husslage has managed or co-managed all of Tower’s Rabbit
North diamond drilling programs since the discovery of the Lightning Zone in December 2021.
Split samples of the core, generally 1.0 or 1.5 m in length, were delivered directly to Activation
Laboratories (ActLabs) in Kamloops, BC, a laboratory certified as ISO/IEC 17025 Accredited (Lab 790) by
the Standards Council of Canada. QA/QC samples including blanks and standards were inserted regularly
into the sample sequence at a ratio of approximately 1:20.