GreenLight Metals (TSX-V: GRL | OTCQB: GRLMF): The First Drill Hole Through a 20-Year Mining Ban Came Up With Visible Gold
In the autumn of 2025, a drill rig in northern Wisconsin pulled a length of rock from 290 metres underground. Visible in the core, plain to the eye, were flecks of gold.
The ground that core came out of had not been touched by a drill in more than twenty years.
GreenLight Metals (🇨🇦GRL / 🇺🇸GRLMF) is the company that put the rig there. They are first through the door of a copper-gold mining belt that the state of Wisconsin sealed off in the mid-1990s and quietly reopened in 2017. Right now, they are the only company drilling it.
Twenty years frozen
To understand why that fact carries weight, you have to know what got frozen.
The Penokean Volcanic Belt runs through the northern part of Wisconsin. It shares the same rock formation as two of the most productive mining camps in North America, the Abitibi and the Flin Flon, both of which sit just over the border in Canada and have produced billions of dollars of metal across the last hundred years. The Canadian side of that geology got drilled, mapped, and turned into mines. The Wisconsin side was politically sealed by a state moratorium on non-ferrous mining. For more than twenty years, nobody could drill it. The capital walked away. The majors moved on.
The ban came off in 2017. The state modernized its permitting framework. And for nearly a decade after that, almost nobody actually moved.
Matt Filgate listed GreenLight Metals on the TSX Venture Exchange in April 2025 and walked straight into the gap. He locked up the best ground. He got the permits. He started drilling.
Six for six
The flagship is a project called Bend. Thirty-five miles from a past-producing copper mine called Flambeau, with US$8 million of prior drilling already in the ground from earlier operators, over 22,000 metres across roughly fifty holes, plus a 1992 historical estimate of about 4 million tonnes of copper-gold mineralization. (That 1992 number is historical and does not meet today's modern reporting standards. GreenLight is not treating it as a current resource. The drilling is meant to build one.)
Phase-1, in 2025, was six holes. Every one of them hit copper-rich mineralization. The standout returned a 34-metre section of high-grade copper and gold, and the visible gold sample at 290 metres.
Phase-2 is in the ground now. Two diamond drill rigs are turning. The first set of results has already come back and they hit again, a 30-metre interval of copper and gold with a tighter 15-metre core at higher grade still. More holes are at the lab waiting on results.
Six in a row before Phase-2. The first Phase-2 hole made it seven.
The believers
A drilling story is one thing. Drilling stories that also have a major miner's signature on them are something else.
In May 2026, Barrick Gold, one of the largest gold miners in the world, signed a binding term sheet with GreenLight on a separate project in Nevada called Kalium Canyon. Under the deal, Barrick can earn up to 80 percent of the project by putting US$20.5 million of exploration spend plus a million in cash into it. The long-form agreement has not been finalized yet, and there is no guarantee Barrick will complete the earn-in. What it tells you is that one of the biggest miners on the planet looked at this company's technical work and was willing to commit serious money to it.
GreenLight also has C$11.5 million of cash from a recent financing. That funds the current drill program without the company interrupting itself to raise money.
A smaller layer of the story sits underneath all of that. Sampling at Bend has come back with high values of a critical mineral called tellurium, used in advanced solar panel manufacturing and recently the reason Rio Tinto built an entire dedicated processing plant in Utah. For a U.S.-based project, the presence of a critical mineral on top of the copper and gold opens up federal funding programs that almost no other junior in the country qualifies for.
The math
The company is worth less than C$50 million today.
If the rock underneath Bend turns out to be what fifty holes of prior drilling and twenty frozen years suggest it is, it is not worth that. If the drilling comes back empty, you lose what you put in. That is the trade.
What would make this not work
Drill results can come back weaker than pilot results. They sometimes do.
The 1992 estimate at Bend is historical. It has not yet been converted into a modern, compliant resource. That is what Phase-2 is for, and there is no guarantee it gets there.
The Barrick term sheet is binding but not finalized. Earn-ins fall apart.
A real correction in copper or gold prices would compress the entire junior exploration sector regardless of what GreenLight drills.
These are real risks. They are why this is a high-conviction-but-high-risk story rather than a defensive one.
If the Phase-2 holes land where Phase-1 did, GreenLight possibly stops being a sub-C$50 million junior nobody has heard of. It becomes the company that started a district. That is the scenario the next twelve months of drilling are designed to answer.
The ticker is GRL on the TSX Venture Exchange and GRLMF on the U.S. OTCQB.
Disclaimer: Disseminated on behalf of GreenLight Metals Inc. This article is for informational purposes only and is not investment advice. It is part of a paid marketing campaign. Cashu Group was compensated by Resource Stock Digest on behlaf of GreenLight Metals Inc. for the creation and distribution of this content. The 1992 JRJV historical resource estimate referenced at Bend is not compliant with current CIM Definition Standards or NI 43-101. It is not a current mineral resource. Visible gold occurrences referenced are not necessarily indicative of the gold grade of any mineralized interval. The Barrick term sheet on Kalium Canyon is binding but the long-form agreement has not been finalised and there is no certainty Barrick will complete the proposed earn-in. Investing in early-stage exploration companies is speculative and involves significant risk, including the risk of loss of capital. Drilling outcomes, permitting, partnership execution and commodity prices are inherently uncertain. All project details, resource figures, drill results and corporate developments referenced come from the company's public disclosures. Always conduct your