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EXN.V ·

Excellon Drills 2,318 G/T Silver Equivalent over 6.76 Metres at Platosa

Drill Results

www.excellonresources.com

EXCELLON DRILLS 2,318 G/T SILVER EQUIVALENT

OVER 6.76 METRES AT PLATOSA

Toronto, Ontario – July 26, 2017 – Excellon Resources Inc. (TSX:EXN and EXN.WT; OTC:EXLLF) ("Excellon" or

the “Company") is pleased to announce results from its ongoing exploration program at the Platosa Mine in

Durango, Mexico.

Highlights

• Multiple intersections of high grade mineralization potentially expanding the 623 Manto and

connecting the 623 and Guadalupe South mantos, including:

o 886 g/t Ag, 8.8% Pb and 20.5% Zn or 2,318 g/t Ag equivalent (“AgEq”) over 6.76 metres in

EX17UG323;

o 2,965 g/t Ag, 16.4% Pb and 0.9% Zn or 3,702 g/t AgEq over 1.45 metres and 1,171 g/t Ag, 9.3%

Pb and 2.9% Zn or 1,713 g/t AgEq over 1.06 metres in EX17UG324;

o 1,600 g/t Ag, 6.4% Pb and 8.7% Zn or 2,319 g/t AgEq over 3.70 metres in EX17UG325;

o 3,574 g/t Ag, 28.2% Pb and 18.7% Zn or 5,727 g/t AgEq over 1.27 metres in EX14UG200; and

o 1,238 g/t Ag, 5.3% Pb and 2.9% Zn or 1,611 g/t AgEq over 2.10 metres in PH17-27;

• Dry conditions are facilitating efficient underground exploration around the Platosa mantos.

“Today’s results confirm the potential to add significant high-grade mineralization to the 623 Manto and

demonstrate continuity between the 623 and Guadalupe South mantos,” stated Ben Pullinger, Vice-President,

Geology. “This mineralization is near mine workings and therefore has the potential to increase near term high-

grade production. Our drilling program continues to successfully demonstrate the ability to expand Platosa’s

mineralized footprint around existing resources. Dry conditions are also providing easier and more efficient

access to strategic areas for underground drilling around the Platosa mantos.”

Exploration Results

Approximately 15,000 metres have been completed in 120 drill holes from surface and underground in the

ongoing drill program. Material intersections reported today are summarized below:

Hole ID Interval(1) Interval(2) Ag Pb Zn AgEq(3)

From To meters g/t % % g/t

EX17LP1116 321.35 323.54 2.19 104 2.6 1.2 276

EX17UG310 7.80 11.25 3.45 124 5.2 5.2 616

EX17UG323 20.75 27.51 6.76 886 8.8 20.5 2,318

EX17UG324 73.82 75.27 1.45 2,965 16.4 0.9 3,702

and 78.64 79.70 1.06 1,171 9.3 2.9 1,713

EX17UG325 87.80 91.50 3.70 1,600 6.4 8.7 2,319

EX17UG326 90.90 92.70 1.80 316 3.2 0.9 496

and 97.70 99.00 1.30 287 6.3 0.6 584

EX14UG200 60.60 61.87 1.27 3,574 28.2 18.7 5,727

PH17-27 9.90 12.00 2.10 1,238 5.3 2.9 1,611

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(1) From-to intervals are measured from the drill collar, with drill holes marked UG or PH drilled from underground stations.

(2) All intervals are reported as core length.

(3) AgEq in drill results assumes $16.50 Ag, $1.00 Pb and $1.25 Zn with 100% metallurgical recovery.

The Company commenced a 25,000-metre diamond drilling exploration program in Q3 2016. This program

encompasses drilling from surface and from underground. The program is currently focused on definition and

growth of the existing resource in areas that will be in production in 2017, and exploring for new manto

mineralization accessible from mine workings above the water table.

Underground drilling in six holes has successfully delineated an area of approximately 100 metres by 25 metres

that may expand the 623 Manto and connect the 623 and Guadalupe South mantos. EX14UG200 was a

previously unsampled hole identified as mineralized through ongoing review of historical core. EX17UG323,

EX17UG324, EX17UG325 and EX17UG326 followed up on EX16UG274, which intersected 662 g/t Ag, 4.9% Pb,

25.5% Zn and 0.57 g/t Au over 13.00 metres (see press release dated October 27th, 2016). These holes delineate

a growing area of mineralization that runs from the Guadalupe South Manto, which is currently in production, to

the upper level of the high-grade 623 Manto (M+I resources of 83,000 tonnes at 1,866 g/t AgEq) and may,

therefore, be rapidly incorporated into existing mine plans. Mine operations are currently driving the 795

heading towards this area. Follow up drilling is underway to further delineate this connector zone.

Diamond drill hole EX17LP1116 targeted the extension of the NE-1 Manto and successfully increased the

mineralized area of this manto by approximately fifteen metres. Above the mineralized horizon, EX171116

intersected what appears to be a flat thrust fault, which seems to be a control on mineralization as the system

moves east. This fault will be modeled for follow-up later in the year.

Exploration for the remainder of 2017 will focus on defining high-grade manto mineralization around existing

Platosa resources and will also continue to define structural controls within the resource that may lead to

further discoveries of manto and feeder-style mineralization. Surface drilling is currently on hold, pending

ongoing permitting of drill pads and is expected to re-commence later this year. The Company also continues to

develop its regional exploration program for CRD/Source-style (skarn) mineralization.

Platosa drill core samples are prepared and assayed by SGS Minerals Services in Durango, Mexico. The lab is

accredited to ISO/IEC 17025. The Company has a comprehensive QA/QC program, supervised by an independent

Qualified Person.

Qualified Person

Mr. Ben Pullinger, P. Geo, Vice-President Geology, has acted as the Qualified Person, as defined in NI 43-101,

with respect to the disclosure of the scientific and technical information relating to exploration results contained

in this press release.

About Excellon

Excellon’s 100%-owned Platosa Mine in Durango has been Mexico’s highest-grade silver mine since production

commenced in 2005. The Company is focused on optimizing the Platosa Mine’s cost and production profile,

discovering further high-grade silver and CRD mineralization on the Platosa Project and capitalizing on the

opportunity in current market conditions to acquire undervalued projects in Latin America.

Additional details on the La Platosa Mine and the rest of Excellon’s exploration properties are available at

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www.excellonresources.com.

For Further Information, Please Contact:

Excellon Resources Inc.

Brendan Cahill, President & CEO or

Nisha Hasan, Director, Investor Relations

(416) 364-1130

[email protected]

www.excellonresources.com

Forward-Looking Statements

The Toronto Stock Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of the content of this Press Release, which

has been prepared by management. This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act and

Section 27E of the Exchange Act. Such statements include, without limitation, statements regarding the future results of operations, performance and

achievements of the Company, including potential property acquisitions, the timing, content, cost and results of proposed work programs, the discovery and

delineation of mineral deposits/resources/reserves, geological interpretations, proposed production rates, potential mineral recovery processes and rates,

business and financing plans, business trends and future operating revenues. Although the Company believes that such statements are re asonable, it can

give no assurance that such expectations will prove to be correct. Forward -looking statements are typically identified by words such as: believe, expect,

anticipate, intend, estimate, postulate and similar expressions, or are those, which, by their nature, refer to future events. The Company cautions investors

that any forward-looking statements by the Company are not guarantees of future results or performance, and that actual results may differ materially

from those in forward looking statements as a result of various factors, including, but not limited to, variations in the nat ure, quality and quantity of any

mineral deposits that may be located, significant downward variations in the market price of any minerals produced [particularly silver], the Company's

inability to obtain any necessary permits, consents or authorizations required for its activities, to produce minerals from its properties successfully or

profitably, to continue its projected growth, to raise the necessary capital or to be fully able to implement its business strategies. All of the Company's public

disclosure filings may be accessed via www.sedar.com and readers are urged to review these materials, including the technical reports filed with respect to

the Company's mineral properties, and particularly the July 9, 2015 NI 43-101-compliant technical report prepared by Roscoe Postle Associates Inc. with

respect to the Platosa Property. This press release is not, and is not to be construed in any way as, an offer to buy or sell securities in the United States.