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U3O8 Corp. Highlights Planned Production Profile for Vanadium from the Laguna Salada Deposit Based on a PEA

Economic Studies

36 Toronto Street T: 416-868-1491

Suite 1050 www.u3o8corp.com

Toronto TSX: UWE

ON, M5C 2C5 OCTQB: UWEFF

Canada

Press release

U3O8 Corp. Highlights Planned Production Profile for Vanadium from the Laguna

Salada Deposit Based on a PEA

Toronto, Ontario – September 14th, 2017 – U3O8 Corp. (TSX: UWE), (OTCQB: UWEFF) (“U3O8 Corp.”

or the “Company”) highlights the production schedule from the Preliminary Economic Assessment (“PEA”)

on its Laguna Salada Deposit, in which almost twice as much vanadium would be produced as uranium.

“Vanadium prices have risen strongly in response to a supply shortfa ll that has been developing in the

vanadium market,” said Richard Spencer, President & CEO of U3O8 Corp. “The trigger for the recent sharp

price increase was a change in policy in China that resulted in restricted access to vanadium slag and

higher local production costs, coming on the back of increasing vanadium consumption, notably from the

steel and battery industries. Based on a vanadium pentoxide price of US$5.50 per pound, the 0.8mlb to

1.2mlb vanadium production per year estimated in the PEA would contribute 12% of the Laguna Salada

Project’s revenue. Vanadium pentoxide is now trading at over US$12 per pound. In addition, Argentina

paid an average of US$58 per pound for imported uranium last year, only marginally below the US$60 per

pound price used in the economic analysis in the PEA”.

Production Schedule

The mining schedule defined

in the PEA on Laguna Salada

starts with production from the

richest part of the Deposit so

that revenue would be

maximized so that the capital

required to develop t he

Project would be paid back as

quickly as possible – in two

and a half years as per the

current PEA. Uranium

production would be over one

million pounds (“mlbs”) per

year over the first four years

and then would decline

gradually, averaging 0.6mlbs

over the life of the mine

(Figure 1). Argentina’s current

uranium demand is

approximately 0.55mlbs per

year to fuel its three reactors.

Vanadium production would

be relatively constant at

between 0.8mlbs and 1.2mlbs

per year over the life of the mine that was planned on the basis of the initial resource (Figure 1).

Higher-grade uranium and vanadium encountered in channels at the base of the gravel layer in recent

exploration (results reported on January 11, 2017 , January 19, 2017 and February 7, 2017 ), and not

included in the PEA, adds upside potential to the Project.

0

0.2

0.4

0.6

0.8

1

1.2

1.4

Millions Of Pounds Of Metal

Metal Production Schedule

Figure 1. Laguna Salada PEA: Planned

Metal Production By Year (Data from

Preliminary Economic Assessment)

Uranium

(U3O8)

Vanadium

(V2O5)

2

Vanadium Supply-Demand Scenario

The vanadium market

slipped into deficit this year

with demand outstripping

supply for the first time in a

decade (Figure 2).

Vanadium prices have

responded to this structural

change in the market by

strengthening – the sharp

increase over t he last few

months having been

triggered by new Chinese

regulations that restrict the

importation of vanadium

slag, the processing of

which produced pollutants

(Figure 3). Supply was

further impacted by

production cuts from

Sichuan Province in China

in Sep tember and the

importation of a larger

proportion of iron ore that

does not contain significant

vanadium. Demand for

vanadium in China is

expected to increase about

30% (not yet incorporated

in Figure 2) in response to

new regulations

implemented to make

buildings more resistant to

earthquakes through the

use of vanadium steel

rebar; the addition of one

kilogram (approximately

two pounds) of vanadium to

a tonne of steel doubles its

strength.

Next Steps

The metallurgical test work on Laguna Salada indicates that a greater proportion of the contained vanadium

could be extracted from the gravel and work is planned to support this potential.

The Company is focused on finding ways of reducing both capital and operating cost estimates. Examples

of possible capital cost reductions include using pre -owned “belly-scrapers” from the road -building and

construction industry instead of sophisticated and expensive continuous miners to mine the flat -lying,

0

20,000

40,000

60,000

80,000

100,000

120,000

140,000

2011

2012

2013

2014

2015

2016

2017

2018

2019

2020

Tonnes of Vanadium

Figure 2. Vanadium Market Summary & Forecast

(sources of data: Camelot FerroAlloys & Vanitec)

Estimated vanadium required for Li-Ion Batteries

Estimated vanadium required for Redox Flow Batteries

Steel, Chemicals

Supply

$0.00

$2.00

$4.00

$6.00

$8.00

$10.00

$12.00

$14.00

2010

2011

2012

2013

2014

2015

2016

2017

2018

Vanadium Price (V2O5) in US$/lb

Figure 3. Vanadium (V2O5) Price Chart

(sources of data: Metal Bulletin & www.assetmacro.com)

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unconsolidated gravel, and installation of used equip ment for beneficiation to remove the barren pebbles

from the uranium-vanadium – bearing fine sand. In addition, the preference of the Argentine nuclear fuel

enrichment facility to use ammonium diurinate, instead of yellowcake, as feed for its enrichment f acility,

would lower the capital cost estimate for the Laguna Salada Project by approximately 5% through the

elimination of the calcining module from the plant design. A pilot plant would aim to refine capital and

operating costs for both the production of ammonium diurinate and yellowcake.

Technical Information

Cautionary Note: the Preliminary Economic A ssessment is preliminary in nature, and includes inferred

mineral resources that are considered too speculative geologically to have the 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 assessment will be realized.

Dr. Richard Spencer, P.Geo., CGeol., 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 development of deposits of uranium and battery commodities in

South America. Battery commodities that occur with uranium resources include vanadium, nickel, zinc 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 surface, 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 add itional six veins, while yet other veins

require first-time exploration drilling.

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.

For further information, please contact:

Richard Spencer, President & CEO, U3O8 Corp. Tel.: (416) 868-1491 [email protected]

Forward-Looking Statements

This news release includes certain “forward looking 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 statements 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 potentia l 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 explo ration, resource goals, metallurgical testing, economic

studies and development activities will continue to be positive 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 project, (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 wi ll be favourable,

and (v) financial markets and the market for uranium will improve for junior resource companies in the short-term. Such

statements are subject to risks and uncertainties that may cause actual results, performance or developments to differ

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

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

appropriate joint ve nture 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 resource growth, future metallurgical test results, changes in project parameters as plans evolve,

(6) competitive developments, (7) availability of future financing , (8) exploration risks, and other factors 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 pr eparation 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 forward -looking statements. U3O8 Corp. assumes no obligation to update such information ,

except as may be required by law. For more information on the above -noted PEAs, refer to the September 18, 2014

technical report titled “Preliminary Economic Assessment of the Laguna Salada Uranium -Vanadium Deposit, Chubut

Province, Argentina” and the January 18, 2013 technical report titled “U3O8 Corp. Preliminary Economic Assessment

on the Berlin Deposit, Colombia.”