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TriMetals Mining Inc. Intercepts 30.5 Metres at 1.31 g/t AuEq* at South Jumbo (Etna)

Drill Results

NEWS RELEASE: 17-03

TriMetals Mining Inc. Intercepts 30.5 Metres at 1.31 g/t AuEq* at

South Jumbo (Etna)

March 2, 2017, Vancouver, British Columbia— TriMetals Mining Inc. (TSX: TMI,

OTCQX: TMIAF), (the “Company”), is pleased to announce the results from the final drill

holes of the 2016 program on the Gold Springs project located in Utah and Nevada.

Link to Location Map showing Jumbo Trend:

http://www.trimetalsmining.com/wp-content/uploads/2017/01/GSPR_Figure1-09-17v2mpm.pdf

Two additional holes were completed in the South Jumbo on the Etna target and three within

Central Jumbo. Highlights from the final holes include 1.1 g/t Au and 15.61 g/t Ag, equating to

1.31 g/t AuEq* over 30.5 metres in hole E-16-008 which was drilled from the same location as

E-16-004 (24.4 metres at 2.04 g/t Au, 11.49 g/t Ag, PR January 11, 2017) but at a steeper angle

to test the down dip continuity of the system.

Link to map showing South Jumbo (Etna) Plan and Sections:

http://www.trimetalsmining.com/wp-

content/uploads/2017/02/EtnaPlanSections201750Proj.pdf

Three holes were drilled within the central portion of the Jumbo trend, the State Section target,

returning 12.2 metres at 0.79 g/t Au and 5.79 g/t Ag in hole SS-16-001. This hole is located 500

metres south of the Jumbo resource area and 1,100 metres from the 2016 Etna holes. The other

two holes located in Central Jumbo were reconnaissance holes drilled into areas of structural

complexity to better understand the geology and did not intersect any significant gold

mineralization.

Ralph Fitch, President and CEO of the Company stated “The final drill results from the 2016

program continue to demonstrate the size and strength of the mineralizing systems at Gold

Springs. From an exploration standpoint it is very significant that hole SS-16-001, located

between the two known blocks of mineralization on the Jumbo Trend, and drilling into a

partially covered area, intersected a portion of the Jumbo mineral system. This hole located in

the central portion of the Jumbo Trend, between the North Jumbo and South Jumbo (Etna)

targets, intersected the mineralized system, again confirming the continuity of the

mineralization flanking the 5.5 km long Jumbo Structural Trend resistivity high. All this new

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mineralization discovered in the Jumbo Trend and at Thor is presently being incorporated in

our updated resource estimate which is expected to be published in Q1.”

The final Thor hole T-16-011, was drilled to offset T-16-001 and intersected 4.0 g/t Au and 55.7

g/t Ag over 3.1 metres. Another 375 metres south, two additional scouting holes (SH-16-001 and

002) also intersected mineralization indicating that the system continues to the south.

Link to Thor T-16-011 Map and Section:

http://www.trimetalsmining.com/wp-content/uploads/2017/02/ThorPlanSecDH-T-16-011.pdf

Below is a complete list of the final set of results from the 2016 drill program;

Target Drill Hole From (m) To (m) Thickness

(m)

Gold

(g/t)

Silver

(g/t)

AuEq*

(g/t)

South

Jumbo

E-16-007 1.5 32.0 30.5 0.50 5.03 0.58

Void Old

Workings

32.0 36.6 4.6

and 36.6 45.7 9.1 0.63 10.73 0.80

and 97.5 102.1 4.6 0.98 36.5 1.57

and 134.1 152.4 18.3 0.34 1.67 0.37

South

Jumbo

E-16-008 33.5 64.0 30.5 1.1 15.6 1.31

and 134.1 146.3 12.2 0.67 3.75 0.73

Central

Jumbo

SS-16-001 88.4 100.6 12.2 0.79 5.79 0.88

Thor T-16-011 134.1 158.5 24.4 0.92 11.02 1.10

Inc. 141.8 144.8 3.1 4.00 55.7 4.90

and 195.1 199.6 4.6 1.87 15.3 2.12

Thor SH-16-001 24.4 33.5 9.1 0.42 1.75 0.45

Thor SH-16-002 3.1 12.2 9.1 0.29 0.66 0.30

* Gold Equivalent (“AuEq”) calculated using a 61.9 gold to silver ratio and assumes 100% metallurgical

recoveries. True width is approximately 80-90% of Thickness.

Hole ID Easting

UTM

NAD 27

Northing

UTM

NAD 27

Elevation

Feet

Azimuth Inclination TD

(ft)

TD

(m)

T-16-011 759431 4198287 6926 235 -70 725 221.0

E-16-007 760577 4196649 6620 90 -70 525 160.0

E-16-008 760544 4196755 6612 90 -70 560 170.7

SS-16-001 761209 4197649 6743 270 -65 505 153.9

SS-16-002 761281 4198125 6825 270 -65 465 141.7

SS-16-003 761032 4197673 6786 270 -65 405 123.4

SH-16-001 759368 4197813 6746 270 -50 465 141.7

SH-16-002 759189 4197622 6598 50 -65 425 129.5

About TriMetals Mining Inc.

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TriMetals Mining Inc. is a growth focused mineral exploration company creating value through

the exploration and development of the near surface, Gold Springs gold-silver project in mining

friendly Nevada and Utah in the U.S.A.

The Company’s approach to business combines the team’s track record of discovery and

advancement of large projects, key operational and process expertise, and a focus on community

relations and sustainable development. Management has extensive experience in the global

exploration and mining industry.

The Company’s common shares and Class B shares are listed on the Toronto Stock Exchange

under the symbols “TMI” and “TMI.B” and the common shares and Class B shares also trade on

the OTCQX market under the symbol “TMIAF” and “TMIBF”. Note that the Class B shares have

no interest in the properties or assets of the Company. The Class B shares are only entitled

collectively to 85% of the net cash, if any, (after deducting all costs, taxes and expenses and the

third-party funder's portion thereof) received by TMI from award or settlement in relation to the

Company’s subsidiary South American Silver Limited’s arbitration proceeding against Bolivia

for the expropriation of the Malku Khota project in 2012. Additional information related to

TriMetals Mining Inc. is available at www.trimetalsmining.com and on SEDAR at

www.sedar.com.

Qualified Person

The Qualified Person on the Gold Springs property is Randall Moore, Executive Vice President

of Exploration – North America of TriMetals Mining Inc. and he has reviewed and approved the

content of this press release. The Qualified Person verified the data for its geological

reasonableness, checked all the inputs and verified the analytical data through an analysis of the

blanks and standards submitted with the drill-chip samples.

Quality Assurance and Quality Control

Approximately 7 kg of RC chips were sent to the laboratory for each 1.52 metre drill interval.

Fifteen percent of the samples submitted by the Company are blanks and standards for QA/QC

purposes. In addition, the laboratory also includes duplicates of samples, standards, and blanks.

The results of these check assays are reviewed prior to the release of data. All RC chip sample

assays are also reviewed for their geological context and checked against the drill logs.

Assay Method

TMI Assays were performed in Sparks, Nevada by Bureau Veritas Mineral Laboratories, an ISO

9001:2000 Certified laboratory. Gold was analyzed by fire assay of a 30-gram sample with an

AAS finish with samples assaying greater than 10 g/t re-assayed using a 30-gram sample and a

gravity finish. All other elements were analyzed by a four acid leach ICP method coded MA300.

No known drilling, sampling, recovery or other factors have been observed that could materially

affect the accuracy or reliability of the data referred to in this news release.

* Gold Equivalent

Gold Equivalent (AuEq) in this press release was calculated using a 61.9 gold to silver ratio and

assumes 100% metallurgical recoveries.

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Forward-Looking Statements

Certain statements contained herein constitute “forward -looking information” or “forward- looking

statements” under applicable securities laws (“forward -looking statements”). Forward-looking

statements look into the future and provide an opinion as to the effect of certain events and trends on the

business. Forward- looking statements may include words such as “continue”, “indicating”, “expected”

and similar expressions. Interpretations of exploration results, including the strength of mineralization,

are also forward-looking statements. These forward -looking statements are based on current

expectations and entail various r isks and uncertainties. Actual results may materially differ from

expectations if known and unknown risks or uncertainties affect our business or if our estimates or

assumptions prove inaccurate. Factors that could cause results or events to differ materially from

current expectations expressed or implied by the forward- looking statements, include, but are not

limited to, risks of the mineral exploration industry which m ay affect the advancement of the Gold

Springs project, including possible variations in mineral resources, grade, recovery rates, metal prices,

capital and operating costs, and the application of taxes; availability of sufficient financing to fund

planned or further required work in a timely manner and on acceptable terms; availability of

equipment and qualified personnel, failure of equipment or processes to operate as anticipated, changes

in project parameters, including water requirements for operations, as plans continue to be refined;

regulatory, environmental and other risks of the mining industry more fully described in the Company’s

Annual Information Form and continuous disclosure documents, which are available on SEDAR at

www.sedar.com. The assumptions made in developing the forward- looking statements include: the

accuracy of current resource estimates and the interpretation of drill, metallurgical testing and other

exploration results; the continui ng support for mining by local governments in Nevada and Utah; the

availability of equipment and qualified personnel to advance the Gold Springs project; execution of the

Company’s existing plans and further exploration and development programs for Gold Sp rings, which

may change due to changes in the views of the Company or if new information arises which makes it

prudent to change such plans or programs.

Readers are cautioned not to place undue reliance on the forward- looking statements contained in this

press release. Except as required by law, the Company assumes no obligation to update or revise any

forward-looking statement, whether as a result of new information, future events or any other reason.

Unless otherwise indicated, forward- looking statements in this press release describe the Company’s

expectations as of March 2, 2017.

TriMetals Mining Inc. Contact:

Ralph Fitch

President & CEO

303.584.0606

[email protected]

Matias Herrero

Chief Financial Officer

303.584.0606

[email protected]