The First Assay
Thursday Drill Digest
TSX · TSX-V · CSE · NYSE-A · Nasdaq  ·  August 20, 2026
17 companies
183 qualifying holes
6 jurisdictions

Seventeen companies cleared the screen on a heavy Thursday tape, and the day's best holes are spread across four metals rather than concentrated in gold. Lion One returned 4.2 m of 715.15 g/t Au at Tuvatu — the highest grade-thickness ever drilled at that mine — while Critical One cut 31.5 m of 4.9% Sb at Howells Lake, Irruptive opened its Chilean porphyry account with 795.2 m of 0.66% CuEq, and Hycroft and Group Eleven carried the silver. Coverage note: seventeen releases were read in full; eight enumerated releases remain unread and are carried forward, and one (Fitzroy) could not be retrieved at all — all are named in Not Screened below.

⚑ Hole of the Day
◉ Shallow · From 121.1m Extension · Step-out Fiji · Moderate Risk ~ Alkalic Epithermal-LS
Lion One Metals LIO TSX-V · C$77M~
Tuvatu Gold Mine, Fiji
TGC-0650: 4.2m of 715.15 g/t Au* from 121.1m
incl. 0.45m of 6,571.20 g/t Au from 123.9m
GT
3,003.6 g/t·m
Exceptional
AuEq·m
3,003.6
Au basis
GT/MCap
39.24×
(Au)
30-day rank
#1 Au
Tuvatu is a producing alkaline gold system, and TGC-0650 is the best grade-over-width the mine has ever drilled: a GT of 3,004 g/t·m, fifteen times the Exceptional threshold, with a 0.45 m sample at 6,571.20 g/t Au that is the single highest assay in the deposit's history. Roscoelite-bearing alkalic systems — Porgera and Vatukoula are the analogues — concentrate gold in narrow, telluride-rich shoots, so width is the constraint here, not grade. At 121 m depth and 15–75 m from existing underground development, and outside the current resource, this reads as a near-term mine-plan addition rather than a new discovery. GT/MCap of 39.2× is the highest the screen has produced in weeks and is a function of a bonanza hole inside a C$77M shell — leverage, not tonnes. True widths are not disclosed and these are drilled lengths; the thing to watch is whether follow-up holes show shoot continuity or whether this is a single high-nugget intersection. No gold result in the recent archive comes within an order of magnitude — nearest comparison is Auro Metals' DSB-61 at 392 AuEq·m on 19 August.
* Drilled widths — true width not determined pending geological modelling.
GT/MCap Spotlight — Top 5
Au, Ag, Cu and Sb metrics sit on different price and unit bases — not directly comparable across metals.
LIO TGC-0650 Au ~ ★ HOTD 39.24×
KNG LC-26-014 Ag 16.11×
ZNG 26-3552-56 Ag 6.26×
CRTL HWL-2026-016 Sb 4.82×
ZNG 26-468-24 Ag 4.02×
Lion One's 39.2× dominates the sheet, and unusually for a top ratio it is a clean gold-unit number rather than a silver-equivalent artifact. Three of the next four are cross-metal silver ratios — Kingsmen's 16.1× is a 1.40 m AgEq intercept in a C$38M shell and is not comparable to the gold and copper names; Group Eleven's 6.3× at Ballywire is the more substantive silver entry. The best clean non-precious ratio is Critical One at 4.8× on antimony, ahead of Irruptive at 3.7× on copper.
◉ From depth ≤200m (shallow)  ·  ⚠ High jurisdiction risk  ·  ~ Moderate jurisdiction risk  ·  ✓ True width stated  ·  ★ HOTD
Today's Qualifying Intercepts — Top 13 of 183
Rating Company Metal Hole m Grade GT AuEq·m GT/MCap
Exceptional Lion OneLIO AuEpithermal-LS TGC-0650* ~ 4.2 715.15 g/t 3,003.6 3,003.6 39.24
Exceptional WesthavenWHN AuEpithermal-LS SNR26-110 ✓ 37.34 6.24 Au, 55 Ag g/t 233.0 254.2 2.33
Great Lion OneLIO AuEpithermal-LS TGC-0633* ~ 5.1 35.24 g/t 179.7 179.7 2.35
Great WesthavenWHN AuEpithermal-LS SNR26-117 ✓ 10.04 12.18 Au, 103 Ag g/t 122.3 132.9 1.22
Great SiriosSOI AuOrogenic CH26-326* 48.5 2.40 g/t 116.4 116.4 0.91
Great CadillacCADY AuOrogenic KAD26-397 ✓ 46.1 2.13 g/t 98.2 98.2 0.04
Great HycroftHYMC AgEpithermal-LS H26D-6169* 82.7 87.52 Ag, 0.77 Au g/t 7,237.9 138.3 2.07 (Ag)
Great HycroftHYMC AgEpithermal-LS H26D-6088* 91.4 66.79 Ag, 0.32 Au g/t 6,104.6 92.2 1.75 (Ag)
Good Group ElevenZNG AgCRD 26-3552-56 ✓ 17.55 110.6 Ag, 4.09 Zn+Pb g/t 1,941.0 45.2 6.26 (Ag)
Exceptional IrruptiveIRR CuPorphyry-Cu IMP002* 795.2 0.66 CuEq % 524.8 654.4 3.66 (Cu)
Exceptional IrruptiveIRR CuPorphyry-Cu IMP004* 406 0.47 CuEq % 190.8 240.8 1.33 (Cu)
Exceptional Osisko MetalsOM CuSkarn 30-1223 ✓ 312.5 0.56 Cu, 4.89 Ag % 175.0 248.8 0.11 (Cu)
Exceptional Critical OneCRTL SbStratabound HWL-2026-016* 31.5 4.9 Sb % 154.4 449.9 4.82 (Sb)
↗ View all 183 intercepts in Google Sheets +170 not shown, incl. GLAD CPG-158 49.0m @ 1.72% Cu (Great, 0.29×) · TLG-ZJ19-094 91.0m @ 0.86 g/t AuEq (Great, 0.07×) · SCMI 26SCM190 33.2m @ 1.49% CuEq (Great, 0.19×) · KLDC KLM26-022 4.4m @ 20.29 g/t Au (Great, 1.55×) · NBRK NBR-26-27 11.2m @ 5.28 g/t Au (Great, 2.41×)
Near-Miss
Near-miss KingsmenKNG AgCRD LC-26-015* 1.70 185 AgEq g/t 314.5 3.7 8.36 (Ag)
Near-miss Group ElevenZNG AgCRD 26-3552-60 ✓ 9.51 34.0 Ag, 0.27 Cu g/t 323.3 7.7 1.04 (Ag)
Near-miss Blue StarBAU AuOrogenic 26UND004* 3.4 2.70 g/t 9.2 9.2 0.28
53 near-miss rows in total are archived; the three shown are the highest GT/MCap.
✓ True width stated in PR  ·  * Drilled width — TW not determined  ·  ◉ From ≤200m (shallow)
⚠ High jurisdiction risk  ·  ~ Moderate jurisdiction risk
GT thresholds — Au: Good >10, Great >50, Exceptional >200 g/t·m  ·  Ag: >500 / >2,000 / >10,000 g/t·m  ·  Cu: >20 / >40 / >150 %·m  ·  Sb: >5 / >20 / >60 %·m
AuEq: Au $3,200/oz · Ag $33/oz · Cu $13,700/t · Sb $30,000/t · Zn $3,000/t · Pb $2,000/t · GT/MCap uses C$ market cap at August 20, 2026 (USD/CAD 1.37)
Where an issuer reports CuEq, AgEq or AuEq, GT is quoted on that equivalent and rated on the equivalent metal's thresholds; AuEq·m is always recomputed from the individual grades at the prices above. Deposit type shown under the metal symbol.
Not Screened
Fitzroy Minerals (FTZ · TSX-V) — Buen Retiro, Chile. Release announced the project's highest-grade copper to date and a 1.9 km strike extension, but the JMN URL returned 403 "URL exceeds maximum length" and no newswire mirror was indexed at run time (Newsfile, TheNewswire, GLOBE NEWSWIRE, PR Newswire, CNW and the company's own newsroom all checked). Not screened — carried to the backlog for tomorrow.

Stakeholder Gold (SRC · TSX-V) — Loki target, Yukon. Cu-Ni-Co plus separate PGE mineralization; PGE has no GT threshold in the current framework, and the release was not read within budget. Carried forward.

Enumerated but unread — carried to the backlog: Metalsource Mining (MSM · CSE), Pinnacle Silver and Gold (PINN · TSX-V), Errington Metals (EM · TSX-V), Soma Gold (SOMA · TSX-V), Mercado Minerals (MERC · CSE), Kirkland Lake Discoveries' KL West programme (KLDC · TSX-V) and Juggernaut Exploration (JUGR · TSX-V). None were dropped; all are queued ahead of tomorrow's releases of equal rank.

Metal exclusions: molybdenum credits at Osisko Metals (to 0.101% Mo) and Gladiator (to 2,259 ppm Mo) carry no AuEq conversion in this framework and are excluded from the AuEq·m column; they are material to both stories and are noted in the archive.
THE FIRST ASSAY
thefirstassay.com
Au $3,200/oz · Ag $33/oz · Cu $13,700/t · Sb $30,000/t
Not investment advice.
Archived: Google Sheets · Raw CSV also saved to Drive