Exploring the Heart of Wyoming’s ISR Uranium Belts
Noble Plains’ flagship project, known as the Shirley East Property, is located in the eastern sector of the prolific Shirley Basin—Wyoming’s historic uranium-producing district that has yielded over 52 million pounds of U₃O₈.
Key Highlights:
5.75 km² land position in eastern Shirley Basin
Adjacent to former producers and a current mine construction (Ur-Energy)
202 historic drill holes—46% intersected uranium mineralization
Shallow mineralization from 100 to 130 meters depth
Road-accessible; ISR-amenable geology
Two mineralised trends identified from our drilling
Key Highlights:
5.75 km² land position in eastern Shirley Basin
Adjacent to former producers and a current mine construction (Ur-Energy)
202 historic drill holes—46% intersected uranium mineralization
Shallow mineralization from 100 to 130 meters depth
Road-accessible; ISR-amenable geology
Two mineralised trends identified from our drilling
Key Highlights:
5.75 km² land position in eastern Shirley Basin
Adjacent to former producers and a current mine construction (Ur-Energy)
202 historic drill holes—46% intersected uranium mineralization
Shallow mineralization from 100 to 130 meters depth
Road-accessible; ISR-amenable geology
Two mineralised trends identified from our drilling
Shirley East Property
Located approximately 40 miles south of Casper, Wyoming, the Shirley Basin camp hosts multiple legacy uranium operations. Noble Plains' property lies within a highly prospective ISR-compatible trend, flanked by major players including Cameco, Ur-Energy, Uranium Energy Corp., enCore, and Strathmore Plus.
Commodity: Uranium (U₃O₈)
Deposit Type: Roll-front / sandstone-hosted
Land Area: 575 hectares (5.75 km²)
Ownership: 100% Noble Plains
Jurisdiction: Wyoming – an NRC Agreement State with ISR-permitting pathways
Shirley East Property
Located approximately 40 miles south of Casper, Wyoming, the Shirley Basin camp hosts multiple legacy uranium operations. Noble Plains' property lies within a highly prospective ISR-compatible trend, flanked by major players including Cameco, Ur-Energy, Uranium Energy Corp., enCore, and Strathmore Plus.
Commodity: Uranium (U₃O₈)
Deposit Type: Roll-front / sandstone-hosted
Land Area: 575 hectares (5.75 km²)
Ownership: 100% Noble Plains
Jurisdiction: Wyoming – an NRC Agreement State with ISR-permitting pathways
Shirley East Property
Located approximately 40 miles south of Casper, Wyoming, the Shirley Basin camp hosts multiple legacy uranium operations. Noble Plains' property lies within a highly prospective ISR-compatible trend, flanked by major players including Cameco, Ur-Energy, Uranium Energy Corp., enCore, and Strathmore Plus.
Commodity: Uranium (U₃O₈)
Deposit Type: Roll-front / sandstone-hosted
Land Area: 575 hectares (5.75 km²)
Ownership: 100% Noble Plains
Jurisdiction: Wyoming – an NRC Agreement State with ISR-permitting pathways
Geology & Mineralization
The project is underlain by Eocene-aged arkosic sandstones of the Wind River Formation, known to host classic roll-front uranium deposits. These permeable sandstone units are confined by impermeable shale above and below, creating the ideal environment for uranium-bearing oxidized fluids to precipitate along redox boundaries.
Mineralization occurs as uraninite and coffinite coatings on sand grains—fully amenable to In Situ Recovery (ISR) mining methods.
Highlights
Classic Wyoming-style roll-front system
Mineralization hosted at shallow depths
ISR-compatible hydrogeology and chemistry
Multiple stacked intercepts within single holes
Geology & Mineralization
The project is underlain by Eocene-aged arkosic sandstones of the Wind River Formation, known to host classic roll-front uranium deposits. These permeable sandstone units are confined by impermeable shale above and below, creating the ideal environment for uranium-bearing oxidized fluids to precipitate along redox boundaries.
Mineralization occurs as uraninite and coffinite coatings on sand grains—fully amenable to In Situ Recovery (ISR) mining methods.
Highlights
Classic Wyoming-style roll-front system
Mineralization hosted at shallow depths
ISR-compatible hydrogeology and chemistry
Multiple stacked intercepts within single holes
Geology & Mineralization
The project is underlain by Eocene-aged arkosic sandstones of the Wind River Formation, known to host classic roll-front uranium deposits. These permeable sandstone units are confined by impermeable shale above and below, creating the ideal environment for uranium-bearing oxidized fluids to precipitate along redox boundaries.
Mineralization occurs as uraninite and coffinite coatings on sand grains—fully amenable to In Situ Recovery (ISR) mining methods.
Highlights
Classic Wyoming-style roll-front system
Mineralization hosted at shallow depths
ISR-compatible hydrogeology and chemistry
Multiple stacked intercepts within single holes
Exploration Programs
Winter 2024 Drilling Program:
48 vertical holes drilled to ~53m depth
Spaced ~160 meters apart for infill validation
40 holes intersected uranium
133 intercepts recorded, with thicknesses from 0.91m to 7.92m
Grades ≥0.01% eU₃O₈, with 3–4 zones per hole
Two trends of higher-grade thicker mineralisation identified – open north and south
Next Steps:
Follow-up drilling in Q3–Q4 2025 to extend and infill identified trends
Exploration Programs
Winter 2024 Drilling Program:
48 vertical holes drilled to ~53m depth
Spaced ~160 meters apart for infill validation
40 holes intersected uranium
133 intercepts recorded, with thicknesses from 0.91m to 7.92m
Grades ≥0.01% eU₃O₈, with 3–4 zones per hole
Two trends of higher-grade thicker mineralisation identified – open north and south
Next Steps:
Follow-up drilling in Q3–Q4 2025 to extend and infill identified trends
Exploration Programs
Winter 2024 Drilling Program:
48 vertical holes drilled to ~53m depth
Spaced ~160 meters apart for infill validation
40 holes intersected uranium
133 intercepts recorded, with thicknesses from 0.91m to 7.92m
Grades ≥0.01% eU₃O₈, with 3–4 zones per hole
Two trends of higher-grade thicker mineralisation identified – open north and south
Next Steps:
Follow-up drilling in Q3–Q4 2025 to extend and infill identified trends