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Hercules Metals Intersects 788 m of 0.54% Copper Equivalent and 802 m of 0.40% Copper Equivalent at the Leviathan Porphyry System in Idaho

Hercules extends its Idaho porphyry copper footprint by 800 metres and secures $31.5 million in financing for district-scale exploration.

By The Northwire Desk — AI Analysis Jun 16, 2026 · 07:01 BIG · 0.67 Hercules Metals Corp.

Executive Summary

Hercules Metals reported extended drilling results at the Leviathan Porphyry system, with hole HER-25-21 returning 801.6 m of 0.40% CuEq and HER-25-18 returning 787.9 m of 0.54% CuEq.
High-grade intercepts were identified at the top of the system, including up to 21.3 m of 2.00% CuEq and 57.4 m of 1.18% CuEq.
Exploration is advancing at new targets: a strong IP chargeability anomaly (up to 40 mV/V) has been identified at the Hook target, prompting reconnaissance drilling, while the first hole at Pegasus (HER-26-02) has been completed with distal porphyry alteration.
The Leviathan Porphyry remains open for expansion to the southwest, with further step-out drilling planned for the 2026 season.
CuEq calculation parameters are based on a 3-year trailing average ($4.20/lb Cu, $2,600/oz Au, $30.50/oz Ag, $21.50/lb Mo) with 80% metallurgical recoveries assumed.

Material Impact

The June 16, 2026 results are a direct continuation of the 2026 drill program initiated in March, which targeted a 20,000–30,000 m campaign across five zones.
The intercepts confirm strong mineralization continuity and validate the 3D geological model and MT/NSIP geophysical surveys that identified the "Donut" anomaly and Southern Flats target.
While the grades are lower than the initial discovery intercepts, the massive thickness (nearly 800 m) reinforces the district-scale potential of the Idaho porphyry belt.
The news is incremental to the March and May results, which already established the southwest extension and new target generation. It does not represent a sudden, unexpected discovery but rather the systematic execution of the planned exploration strategy.
The company's liquidity was significantly bolstered by a $31.5 million bought-deal financing closed on May 20, 2026, providing ample runway to complete the 2026 campaign and advance toward a maiden resource estimate.

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Company Overview

Hercules Metals Corp. is a pre-revenue exploration company advancing the Leviathan Porphyry Copper discovery in western Idaho.
The flagship project sits within a >100,000-acre contiguous land package in the emerging Idaho porphyry copper belt.
The Leviathan system features a >1 km strike length, up to 750 m width, and 500 m vertical extent, with mineralization hosted in a classic porphyry copper-molybdenum-silver system.
The company holds deeded surface mining rights, allowing for year-round drilling without permitting delays.
Management is utilizing advanced geophysics (MT and NSIP) and a 3D geological model to systematically expand the discovery and identify new porphyry centers.

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