San Rafael District
San Rafael District, Utah
A Premier Growth Hub For U.S. Uranium
San Rafael District is #2 in Utah for established unmined uranium resources and historically the 4th largest uranium-producing district in the state, with 4.5M lbs U₃O₈ and 3.6M lbs V₂O₅² produced at reported grades of 0.27% U₃O₈ / 0.20% V₂O₅²
Later-stage discoveries from the late 1970s remain largely undeveloped due to prior market conditions, supporting a pipeline of uranium–vanadium targets with enhanced vanadium enrichment
Utah’s Agreement State status places permitting at the state level, supporting streamlined approvals and potentially faster development timelines relative to federally managed jurisdictions
The Melinda Property features significant radiometric anomalies and dense historical drilling, with a new drill permit approved to support near-term target testing
² BENDIX FIELD ENGINEERING CORPORATION, URANIUM FAVORABILITY OF THE San Rafael Swell, October 1977
Historical production figures referenced herein are derived from historical records and reports prepared by previous operators of the property. The Company has not independently verified the accuracy or completeness of this information and is therefore unable to confirm its reliability. While the Company believes the historical production information to be relevant as an indication of the potential of the property, such information should not be relied upon as an indication of future performance or the economic viability of the property. A Qualified Person has not completed sufficient work to verify the historical production information and therefore it should not be relied upon.
i70 Uranium Project
Located just off Interstate 70, the I-70 Uranium Project, formerly known as the Green River Project, consists of 202 claims spanning 4,173 acres. The project offers strong logistical advantages thanks to its proximity to established infrastructure and ease of access.
Infrastructure advantage
Located just off Interstate 70, the project benefits from strong regional access, logistics, and nearby infrastructure.
Permitted and data-rich
An active Small Mining Operations permit, underground mine maps, and Atlas drill logs provide a strong platform for ongoing validation and advancement.
Historical resource base
Historical estimates include 543,245 pounds of U3O8 at 0.17% (indicated) and ~1.5 million pounds at 0.15% (inferred).¹
Proven uranium setting
The project sits within Utah’s San Rafael District, a historically productive uranium region with established geological potential.
High-priority exploration targets
Historical Atlas Corp. data outlines a significant uranium inventory and identifies multiple target areas for follow-up work.
Clear path to resource growth
Historical production, surface mineralization, and existing technical data support the potential to define and expand a future mineral resource.
Melinda Uranium Project
Located in Utah’s San Rafael District, the Melinda Project spans approximately 340 claims across 7,024 acres and benefits from extensive historical exploration. The project combines broad drill-defined mineralization with modern targeting data that supports follow-up drilling.
Large district-scale footprint
Approximately 240 claims across 8 square miles in a proven uranium region.
Strong mineralization indicators
More than 25% of holes returned anomalous uranium intercepts, including several above 0.1% U₃O₈.
Modern targeting advantage
Airborne radiometric data helps refine targets and highlight mineralized channel trends.
Extensive historical drilling
375 drill holes completed, with roughly 100 holes intersecting uranium mineralization.
Untested western extension
Follow-up potential remains along the western continuation of the mineralized trend.
Near-term drill potential
Permitting supports follow-up work designed to test and validate priority targets.
¹ Gillingham, Thomas, E., Consulting Mining Engineer, 1984, (August 16, 1984), Atlas Controlled Uranium and Vanadium Ore Reserve Tributary to Moab (Utah) Mill as of 6/30/84: Personal communication to Mr. Edward Farley, Jr., President, Atlas Corporation, 11p.
Historical estimates were prepared for Atlas Corp. using the classification categories indicated reserves and inferred reserves consistent with 1976 USGS principles of classification applicable at that time. The above historical estimates were not prepared using the current definitions of “mineral reserve” and “mineral resource” as those terms are used in National Instrument 43-101 (“NI 43-101”) and defined under current CIM standards. The historical estimate is considered reliable and is relevant for the purpose of conducting data analysis and future exploration on the Properties. Additional review and analysis of the available data, and if necessary additional exploration work, including confirmatory drilling and sampling, is required to verify and upgrade the historical estimates as a current mineral resource or mineral reserve. A qualified person has not done sufficient work to classify the historical estimate as current mineral resources or mineral reserves. The Company is not treating the historical estimate as current mineral resources or mineral reserves. No specific analyses of V2O5 are available for Company’s Green River deposits, as at the time of reserve estimation, Atlas Corp. considered the concentration of vanadium to be too low for economic production. However, references to Indicated and Inferred Ore are considered similar to indicated and inferred mineral resources.
i-70: 2 Mills, S.E. and Jordan, B., 2021, Uranium and vanadium resources of Utah—an update in the era of critical minerals and carbon neutrality: Utah Geological Survey Open-File Report 735, 26 p., 1 appendix
Exploration Potential
Salt Wash-hosted mineralization
Uranium mineralization is hosted within the Salt Wash Member of the Morrison Formation, a well-known regional uranium-bearing unit.
Channel-style targets
More than 25% of holes returned anomalous uranium intercepts, including several above 0.1% U₃O₈.
Improved targeting from new data
Airborne radiometric surveys not available during earlier drilling now support better targeting across the property.
Potential for higher-grade delineation
Close-spaced follow-up drilling may help define areas of stronger mineralization within historically wide-spaced drilling.
Latest San Rafael News
Manhattan Uranium Identifies High-Grade Uranium Intercepts from 5,668-Hole Database Compilation at I-70, San Rafael District, Utah
July 23, 2026
Manhattan Uranium Discovery Corp. Highlights Premier Project Portfolio
May 14, 2026
Manhattan Uranium Discovery Corp. Completes Transformational Acquisitions of Urano Energy and Pegasus Resources
May 7, 2026
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i70 Project
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A Premier Growth Hub For U.S. Uranium
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The I-70 Project features an active mining permit, extensive historical underground workings, and data from hundreds of legacy drill holes. A NI 43-101 compliant technical report has been completed and is available on SEDAR