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U3O8 Corp. Reports that Argentina is On-Course to Generate 9% of its Electricity from Nuclear in 2019; Sets Goals for Small Modular Reactors; and CEO to Speak at the Latin American Nuclear Industry Summit

Marketing Announcement

401 Bay Street T: 416-868-1491

Suite 2702 www.u3o8corp.com

Toronto, ON M5H 2Y4 TSX: UWE

Canada OCTQB: UWEFF

Press release

U3O8 Corp. Reports that Argentina is On-Course to Generate 9% of its Electricity from

Nuclear in 2019; Sets Goals for Small Modular Reactors; and CEO to Speak at the Latin

American Nuclear Industry Summit

Toronto, Ontario – March 15, 2017 – U3O8 Corp. (TSX: UWE), (OTCQB: UWEFF) (“U3O8 Corp.” or the

“Company”) notes that Argentina produced a 7,677 giga watt-hours (“GWh”) of electricity from its two

operating nuclear reactors in 2016 (Figure 1), acco rding to CNEA (Argentine National Atomic Energy

Commission). This represents 5.6% of Argentina’s electricity production, generated by the Atucha I and

Atucha II nuclear reactors. When the Embalse power plant comes back to full production in mid-2018,

the three reactors will gener ate approximately 9% of the country’s electricity. The Embalse reactor is

currently off-line for refurbishment so that it c an operate for another 30 years at a 6% higher power

output. The Embalse reactor also produces about one third of the world’s Cobalt-60 isotope

requirements, principally for diagnostic medicine.

The growing nuclear power output will increase yellowcake demand in Argentina from approximately

310,000 pounds per year to 650,000 pounds per year. Annual production from the Laguna Salada

Deposit would start at one million pounds in year one and would average approximately 600,000 pounds

of U3O8 per year over a ten-year mine life, according to the mining schedule modeled in the preliminary

economic assessment (“PEA”)1. The latest publicly available data show that Argentina, which currently

imports its entire uranium requirement, paid an average price of US$78 per pound in 2015. The

estimated cash cost of production defined in t he PEA on Laguna Salada starts at US$11.66 per pound of

uranium in year one and averages US$21.62 per pound over the planned ten-year mine-life. (In

compliance with NI 43-101, 2.3(3) (a), readers are alerted that the PEA includes inferred mineral

resources that are considered too speculative geologically to have economic considerations applied to

them that would enable them to be categorized as mineral reserves and there is no certainty that the

results of the PEA will be realized. In addition, in compliance with NI 43-101, 3.4., readers are alerted

that the PEA includes results of an economic analysis on mineral res ources and that mi neral resources

are not mineral reserves and do not have demonstrated economic viability).

At a conference in Vienna, the Undersecretary of Nuclear Energy in Argentina commented that Argentina

plans to capture about 20% of the international sm all modular reactor (“SMR”) market with its CAREM

design. A 25 megawatt (“MW”) prototype is under cons truction in Argentina and is designed principally

for smaller, off-grid, outlying communities and for indu stries that have a high-intensity power requirement

such as desalination plants for the production of fresh water from seawater. An up-scaled model that has

a capacity of 120MW, the first of which is plan ned to be deployed in Formosa Province, Argentina, is

expected to have wide appeal in the international mark et. This is the first time the Argentine government

has publicly provided guidance on its market penetration target for Argentine SMRs. The Undersecretary

estimated that the export of SMRs could contribute US$3 billion per year to t he economy – that would

represent 0.5% of Argentina’s GDP.

U3O8 Corp.’s CEO will be making a presentation entitled “The role of the Laguna Salada Uranium-

Vanadium Deposit in further developm ent of the nuclear industry in Argentina,” at the Latin American

Nuclear Industry Summit on March 15-16, 2017, in Buenos Aires, Argentina.

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Technical Information

Dr. Richard Spencer, P.Geo., C.Geol., President and CEO of U3O8 Corp. and a Qualified Person as

defined by National Instrument 43-101, has approved the technical information in this news release

relating to the Laguna Salada Deposit and the related PEA.

About U3O8 Corp.

U3O8 Corp. is focused on exploration and developm ent of deposits of uranium and associated

commodities in South America. Potential by-products from uranium production include commodities used

in the energy storage industry – in the manufacture of batteries - such as nickel, vanadium and

phosphate. The Company’s mineral resources estimates were made in accordance with National

Instrument 43-101, and are contained in three deposits:

 Laguna Salada Deposit, Argentina – a PEA shows this near surf ace, free-digging uranium -

vanadium deposit has low production-cost potential;

 Berlin Deposit, Colombia – a PEA shows that Berlin also has low-cost uranium production potential

due to revenue that would be generated from by-products of phosphate, vanadium, nickel, rare earths

(yttrium and neodymium) and other metals that occur within the deposit; and

 Kurupung Deposit, Guyana – a uranium resource has been estimated in four veins within a

uranium-zirconium vein system. Resources have been estimated on four veins, while consistent

mineralization of the same type has been intersected in scout drilling of an additional six veins, while

yet other veins require first-time exploration drilling.

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Information on U3O8 Corp., its resources and technical reports are available at www.u3o8corp.com and

on SEDAR at www.sedar.com. Follow U3O8 Corp. on Facebook: www.facebook.com/u3o8corp, Twitter:

www.twitter.com/u3o8corp and Youtube: www.youtube.com/u3o8corp.

Forward-Looking Statements

This news release includes certain “forward lookin g statements” related with the development plans,

economic potential and growth targets of U3O8 Corp.’ s projects. Forward-looking statements consist of

statements that are not purely historical, including st atements regarding beliefs, plans, expectations or

intensions for the future, and include, but not limited to, statements with respect to: (a) the low-cost and

near-term development of Laguna Salada, (b) the Laguna Salada and Berlin PEAs, (c) the potential of the

Kurupung district in Guyana, (d) impact of the U- pgradeTM process on expected capital and operating

expenditures, and (e) the price and market for uranium. These statements are based on assumptions,

including that: (i) actual results of our exploration, re source goals, metallurgical testing, economic studies

and development activities will continue to be posit ive and proceed as planned, and assumptions in the

Laguna Salada and Berlin PEAs prove to be accurate, (ii) a joint venture will be formed with the provincial

petroleum and mining company on the Argentina proj ect, (iii) requisite regulatory and governmental

approvals will be received on a timely basis on terms acceptable to U3O8 Corp., (iv) economic, political

and industry market conditions will be favourable, a nd (v) financial markets and the market for uranium

will improve for junior resource companies in the sh ort-term. Such statements are subject to risks and

uncertainties that may cause actual results, perform ance or developments to differ materially from those

contained in such statements, including, but not limited to: (1) changes in general economic and financial

market conditions, (2) changes in demand and prices for minerals, (3) the Company’s ability to establish

appropriate joint venture partnerships, (4) litigation, regulatory, and legislative developments, dependence

on regulatory approvals, and changes in environmental compliance requirements, community support and

the political and economic climate, (5) the inherent uncertainties and speculative nature associated with

exploration results, resource estimates, potential re source growth, fu ture metallurgical test results,

changes in project parameters as pl ans evolve, (6) competitive developm ents, (7) availability of future

financing, (8) exploration risks, and other factor s beyond the control of U3O8 Corp. including those

factors set out in the “Risk Factors” in our Annual Information Form available on SEDAR at

www.sedar.com. Readers are cautioned that the assumptions used in the preparation of such

information, although considered reasonable at the time of preparation, may prove to be imprecise and,

as such, undue reliance should not be placed on forw ard-looking statements. U3O8 Corp. assumes no

obligation to update such information, except as ma y be required by law. For more information on the

above-noted PEAs, refer to the S eptember 18, 2014 techni cal report titled “P reliminary Economic

Assessment of the Laguna Salada Uranium-Vanadi um Deposit, Chubut Province, Argentina” and the

January 18, 2013 technical report titled “U3O8 Corp . Preliminary Economic Assessment on the Berlin

Deposit, Colombia.”

For further information, please contact:

Richard Spencer

President & CEO

U3O8 Corp.

Tel.: (416) 868-1491

[email protected]

1 September 18, 2014 Technical Report: “Preliminary Economic Assessment of the Laguna Salada

Uranium Vanadium Deposit, Chubut Province, Argentina.