p style=”text-align: center;”>2026 Lithium Power Map : Early Access Open ($59) | Get the latest sector data and secure your copy here: https://skillings.short.gy/LithiumPreSale
By Eva Sterling
Uranium drilling activity in Wyoming is entering a transformative phase as Myriad Uranium (CSE: MZZ) moves to solidify its position at the historic Copper Mountain project. In April 2026, the company filed a new NI 43-101 technical report. This provides a modern framework for a district that has lacked unified exploration for decades.
This technical milestone serves as the catalyst for a Phase II drill program that aims to test the limits of what was once one of the most promising uranium districts in the United States. For investors and operators alike, the revival of Copper Mountain represents more than just a search for pounds in the ground; it is an exercise in applying modern geological modeling to a region that historic explorers prematurely abandoned due to the limitations of 1970s technology.
The NI 43-101: A Modern Foundation for Historic Wealth
The filing of the NI 43-101 technical report this month is the culmination of years of data consolidation and recent field validation. Copper Mountain, located in Fremont County, Wyoming, was a focal point for Union Pacific in the 1970s. At that time, the company invested heavily and identified key deposits. These included the Canning and Fuller zones.
However, Union Pacific’s exploration was cut short by the uranium market crash of the early 1980s. For decades, the district remained fragmented. Myriad’s key achievement is consolidation. It now controls more than 10,000 acres. This brings the most prospective zones under one operator.
The new technical report outlines the vast scale of the project, which includes seven historic deposits and at least 15 additional high-priority targets. Historical estimates suggest up to 650 million pounds of uranium. However, these figures still require modern validation.
Breaking the “Hard Deck”: Deep Mineralization Potential
One of the most compelling narratives emerging from Myriad’s 2024 and 2025 exploration efforts is the debunking of the “hard deck” theory. During the Union Pacific era, drilling was largely confined to the upper 600 feet of the surface. This was not due to a lack of mineralization, but rather a practical limit on the drilling technology and economic thresholds of the time.
However, Myriad’s recent drilling tells a different story. Mineralization continues well below this level. In late 2024, holes drilled beneath the Canning deposit encountered mineralization at depths of 1,495 feet. This vertical expansion suggests that the historic “Control Area”: which was estimated to contain 245 million pounds of uranium down to the 600-foot level: might only represent the tip of the iceberg.
By proving that the mineralized systems at Copper Mountain extend deeper into the granite host rocks, Myriad has effectively doubled or tripled the potential volume of the target zones. This development is particularly relevant as the industry looks toward mining M&A in 2026, where larger, deeper-seated assets are becoming increasingly attractive to majors seeking long-term supply security.
The Grade Underestimation Factor: Assays vs. Gamma
The bullish case for Copper Mountain is further strengthened by a discrepancy discovered between historic gamma probing and modern chemical assays. Traditionally, uranium grades are estimated in the field using gamma probes, which measure radioactivity. However, it can misrepresent actual uranium content. This issue is known as disequilibrium.
Myriad’s systematic chemical assaying program has revealed that the uranium grades at Copper Mountain may be significantly higher than previously thought. Findings indicate that zones with 1,000 ppm equivalent grade (as measured by probes) contain an average of 60% more uranium when chemically assayed. For zones at 500 ppm, the enhancement was approximately 50%.
This “grade enhancement” suggests that the historical resource estimates, which relied heavily on gamma data, may have substantially understated the actual metal content of the district. If these findings hold true across the broader project area, the economic viability of a future mining operation at Copper Mountain could shift dramatically in a favorable direction.
Phase II Drilling: Targeting District-Scale Anomalies
With the NI 43-101 filed and the technical groundwork laid, Myriad is now pivoting to its Phase II drill program. The program will cover between 4,500 and 10,000 meters. It will target over 100 radiometric anomalies.
What makes Phase II particularly high-stakes is the focus on the eastern extensions of the district. Historically, exploration was concentrated in a central north-south structural corridor. However, the 2025 survey revealed extensive anomalies in previously unexplored areas to the east.
The drill program is designed to:
- Validate New Targets: Test the 100+ anomaly points prioritized for field validation.
- Infill and Expand: Drill deeper holes in known deposit areas like Canning and Fuller to expand resources below the 600-foot deck.
- Confirm Grade: Continue utilizing chemical assays to provide an accurate representation of the district’s true uranium concentration.
This level of aggressive exploration is mirrored across other sectors as companies rush to secure critical mineral supplies. Similar strategic pushes are seen in the lithium space, as detailed in the 2026 Lithium Power Map, where mapping strategic corridors is becoming as vital as the geology itself.
Wyoming Mining: A Tier-1 Jurisdiction for Uranium
The project benefits from its location in Wyoming. The state is the leading uranium producer in the U.S. This makes it a Tier-1 jurisdiction for uranium development.
Furthermore, the broader market for critical minerals is currently undergoing a geopolitical realignment. With Western nations seeking to decouple their energy supply chains from volatile regions, domestic projects like Copper Mountain have moved to the forefront of national interest. The ability to source uranium within the U.S. reduces logistics risks and aligns with current ESG mandates prioritized by institutional capital.
| Metric | Historical (Union Pacific Era) | Myriad Uranium (2026 Outlook) |
|---|---|---|
| Drilling Limit | ~600 Feet (“Hard Deck”) | Open (>1,500 Feet) |
| Land Ownership | Fragmented | Consolidated (10,000+ Acres) |
| Grade Measurement | Gamma Probing (Estimated) | Chemical Assays (Validated) |
| Total Endowment Est. | ~650M lbs (Historical) | Targeted NI 43-101 Validation |
Strategic Implications for the Uranium Sector
As Myriad Uranium advances Copper Mountain, the project is being watched as a bellwether for the “American Uranium Renaissance.” The combination of a district-scale land package, modern grade validation, and deep mineralization potential makes it an investor magnet in a commodity market that is increasingly supply-constrained.
While copper markets have faced their own challenges, such as the Tia Maria permit reviews in Peru, the uranium sector remains buoyed by the global shift toward nuclear energy as a baseload power source for the green transition.
For Myriad, the next six to twelve months will be critical. The results of the Phase II drilling will determine whether Copper Mountain remains a series of promising anomalies or evolves into one of the most significant domestic uranium assets in North America. By leveraging historic data and correcting past misconceptions about depth and grade, the company is attempting to unlock a “district-scale discovery” that has been hiding in plain sight for half a century.
The filing of the April 2026 technical report is not merely a regulatory requirement; it is the official start of a new chapter for Wyoming mining. As the drills begin to turn on those 100+ new anomalies, the industry will be watching closely to see if Copper Mountain can finally live up to its multi-hundred-million-pound potential.
