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First Mining Finance Releases Additional Set of Assay Results from its Goldlund Infill Drilling Program 11 of 11 drill holes intersect significant gold mineralization

Drill Results

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First Mining Finance Releases Additional Set of Assay Results

from its Goldlund Infill Drilling Program

11 of 11 drill holes intersect significant gold mineralization

July 10, 2017

Vancouver, British Columbia – First Mining Finance Corp. (“First Mining” or the

“Company”) is pleased to announce the fifth set of assay results , comprising 11 drill holes

(Tables 1 and 2) from its Phase 1, 24,000 metre diamond drill infill program on its 100% owned

Goldlund Gold Project (“Goldlund”), located near the town of Sioux Lookout in northwestern

Ontario, Canada.

Highlights:

• Hole GL-17-002 intersected 14.0 metres of 1.48 grams per tonne gold

o Including 2.0 metres of 8.00 grams per tonne gold

• Hole GL-17-042 intersected 22.0 metres of 1.20 grams per tonne gold

o Including 2.0 metres of 9.66 grams per tonne gold

• Hole GL-17-002 intersected 28.0 metres of 0.85 grams per tonne gold

o Including 14.0 metres of 1.14 grams per tonne gold

Note: Assaying for the Goldlund 2017 drill program is being done by SGS at their laboratories in Red Lake, ONT, and Burnaby, BC.

Reported widths are drilled core lengths; true widths are unknown at this time. Assay values are uncut.

The goal of the 2017 drill ing campaign at Goldlund is to upgrade Inferred resources into the

Measured and Indicated categories, with the majority of the drilling focused on Zone 7 and Zone

1 (Figures 1 and 2), and to gain further knowledge of the geology and gold mineralization in

preparation for a Phase 2 drilling program. The Phase 1 drilling program, comprising 100 holes

(24,300 metres), was completed at the end of May and the remaining assay results from the

Phase 1 program will continue to be released in batches as they are received.

Since the commencement in January of the Phase 1 drilling program, the Company has issued

four press releases (on April 25, May 2, May 24, and June 20, 2017) comprising a total of 49

drill hole results. With today’s latest press release, the Company has now released the results

for 60 drill holes from the Phase 1 program, of which 57 drill holes contain significant intervals of

gold mineralization, a 95% success rate.

Commenting on the results, Dr. Chris Osterman, CEO of First Mining stated, “We are very

pleased with the success of the Phase 1 drilling program, and as a result, we are now re -

mobilizing a drill to re- commence drilling at the Goldlund Project to test the deeper portions of

Zone 1. This series of deeper drill holes is expected to test the granodiorite dike hosting gold

mineralization 50 to 200 metres below the historic mine workings in Zone 1. We anticipate that

this drill program could evolve into a Phase 2 drill program once all assays are received by the

Company of the first 100 holes.”

In addition, Keith Neumeyer, the Chairman of First Mining, stated, “ So far during the 2017

drilling campaign at Goldlund we have intersected gold mineralization in 57 out of the 60 holes

drilled which is an impressive accomplishment. Given this excellent success rate, we have

decided to send the rigs back to work to continue to drill at Goldlund as we develop a more

concise Phase 2 program.”

Table 1. Drill Hole Assay Results from Goldlund

Assaying for the 2017 Goldlund drill program is being done by SGS at their laboratories in Red Lake, Ontario, and Burnaby, BC.

Prepared samples are analyzed for gold by either Bulk Leach Extractable Gold (BLEG) assay techniques or by lead fusion fire

assay with an atomic absorption spectrometry (AAS) finish. Multi-element analysis on the mineralized zones is also being

undertaken by two-acid aqua regia digestion with ICP-MS and AES finish.

Hole ID From (m) To (m) Length (m) Au g/t

GL-17-002 17.0 31.0 14.0 1.48

inc 17.0 19.0 2.0 8.00

and 69.0 91.0 22.0 0.64

and 129.0 135.0 6.0 1.40

inc 129.0 131.0 2.0 3.83

GL-17-003 50.0 76.0 26.0 0.29

and 94.0 96.0 2.0 1.24

and 106.0 108.0 2.0 11.12

and 140.0 168.0 28.0 0.85

inc 140.0 154.0 14.0 1.14

and 208.5 209.5 1.0 2.86

and 245.0 247.0 2.0 1.26

and 269.0 273.0 4.0 1.50

inc 269.0 271.0 2.0 2.57

GL-17-007 93.0 97.0 4.0 1.42

and 145.0 155.0 10.0 0.86

inc 149.0 151.0 2.0 2.34

and 183.0 235.0 52.0 0.63

inc 207.0 213.0 6.0 1.81

and inc 207.0 209.0 2.0 2.74

and inc 211.0 213.0 2.0 2.61

and inc 233.0 235.0 2.0 4.70

and 269.0 271.0 2.0 1.83

GL-17-008 203.0 205.0 2.0 1.05

and 225.0 233.0 8.0 1.40

inc 225.0 227.0 2.0 2.25

and inc 231.0 233.0 2.0 3.33

and 249.0 265.0 16.0 0.40

inc 255.0 257.0 2.0 1.28

and 282.0 290.0 8.0 0.63

inc 285.0 286.0 1.0 3.69

GL-17-002

GL-17-003

GL-17-007

GL-17-008

Table 1 (continued). Drill Hole Assay Results from Goldlund

Assaying for the 2017 Goldlund drill program is being done by SGS at their laboratories in Red Lake, Ontario, and Burnaby, BC.

Prepared samples are analyzed for gold by either Bulk Leach Extractable Gold (BLEG) assay techniques or by lead fusion fire

assay with an atomic absorption spectrometry (AAS) finish. Multi-element analysis on the mineralized zones is also being

undertaken by two-acid aqua regia digestion with ICP-MS and AES finish.

Hole ID From (m) To (m) Length (m) Au g/t

GL-17-010 12.0 58.0 46.0 0.37

inc 12.0 14.0 2.0 1.45

and inc 22.0 24.0 2.0 1.41

and inc 28.0 30.0 2.0 1.66

and inc 52.0 54.0 2.0 1.07

and 182.0 184.0 2.0 1.20

and 252.0 256.0 4.0 1.53

inc 254.0 256.0 2.0 2.62

and 280.0 286.0 6.0 1.07

inc 284.0 286.0 2.0 2.45

GL-17-011 44.0 54.0 10.0 0.74

inc 46.0 48.0 2.0 2.46

GL-17-012 186.0 208.0 22.0 0.71

inc 200.0 208.0 8.0 1.71

and inc 204.0 206.0 2.0 5.02

and 246.0 248.0 2.0 1.52

GL-17-013 74.0 82.0 8.0 1.49

inc 74.0 76.0 2.0 4.04

and 166.0 168.0 2.0 2.69

and 266.0 275.0 9.0 0.95

inc 274.0 275.0 1.0 2.92

GL-17-023 48.0 52.0 4.0 1.23

inc 48.0 50.0 2.0 2.05

GL-17-042 210.0 236.0 26.0 0.30

inc 210.0 212.0 2.0 1.62

and 278.0 351.0 73.0 0.51

inc 278.0 279.0 1.0 16.38

and inc 331.0 333.0 2.0 2.11

and inc 337.0 339.0 2.0 1.22

and 367.0 387.0 20.0 0.53

inc 367.0 369.0 2.0 1.37

and inc 383.0 385.0 2.0 1.85

and 409.0 431.0 22.0 1.20

inc 409.0 411.0 2.0 9.66

and inc 423.0 425.0 2.0 2.28

GL-17-013

GL-17-023

GL-17-042

GL-17-010

GL-17-011

GL-17-012

Table 1 (continued). Drill Hole Assay Results from Goldlund

Assaying for the 2017 Goldlund drill program is being done by SGS at their laboratories in Red Lake, Ontario, and Burnaby, BC.

Prepared samples are analyzed for gold by either Bulk Leach Extractable Gold (BLEG) assay techniques or by lead fusion fire

assay with an atomic absor ption spectrometry (AAS) finish. Multi-element analysis on the mineralized zones is also being

undertaken by two-acid aqua regia digestion with ICP-MS and AES finish.

Figure 1. Plan Map

Hole ID From (m) To (m) Length (m) Au g/t

GL-17-049 70.0 96.0 26.0 0.65

inc 70.0 72.0 2.0 1.45

and inc 78.0 80.0 2.0 4.96

and inc 94.0 96.0 2.0 1.13

and 124.0 136.0 12.0 0.52

inc 124.0 126.0 2.0 1.10

and inc 128.0 130.0 2.0 1.04

and 170.0 172.0 2.0 1.43

and 230.0 248.0 18.0 0.62

inc 230.0 232.0 2.0 1.21

and inc 242.0 244.0 2.0 1.49

and inc 246.0 248.0 2.0 1.38

and 296.0 298.0 2.0 2.19

GL-17-049

Figure 2. Cross-Section through the Goldlund Project

Table 2. Drill Hole Locations

Gold observed during the current drilling program at Goldlund occurs bo th as fine

disseminations in quartz vein stockworks and as more discret e larger grains up to 2 mm

spatially associated with pyrite in the quartz veins. Calaverite, a gold telluride mineral , has been

noted occasionally in higher grade intervals on fracture surfaces in the quartz veins. Higher

grade gold distribution in the granodiorite dike is often, but not always, associated with zones of

more intense quartz stock working and potassic alteration. Figure 2 above displays a cross -

section of the geology and gold mineralization with drill holes GL-17-02 to GL-17-08.

QA/QC Procedures

The QA/QC program for the 2017 drilling program at Goldlund consists of the submission of

duplicate samples and the insertion of certified reference materials and blanks at regular

intervals. These are inserted at a rate of one standard for every 20 samples (5% of total) and

one blank for every 30 samples (3% of total). The standards used in the 2017 program consist

of 5 different gold gra des ranging from 1 to 9 g/t, and are sourced from CDN Resource

Laboratories in Langley, BC. Blanks have been sourced locally from barren granitic material.

Field duplicates from quartered core, as well as ‘coa rse’ or ‘pulp’ duplicates taken from coarse

reject material or pulverized splits, are also submitted at regular intervals with an insertion rate

of 4% for field duplicates and 4% for coarse or pulp duplicates. Additional selected duplicates

are being submitted for screened metallic fire assay analys is and to an umpire lab for check

assaying. SGS also undertake their own internal coarse and pulp duplicate analysis to ensure

proper sample preparation and equipment calibration.

Dr. Chris Osterman, P.Geo., CEO of First Mining, is the “qualified person” for the purposes of

National Instrument 43- 101 Standards of Disclosure for Mineral Projects and he has reviewed

and approved the scientific and technical disclosure contained in this news release.

ABOUT THE GOLDLUND PROJECT

The Goldlund deposit is situated within a land package of approximately 280 square kilometres

(28,000 hectares) referred to as the Goldlund Gold Project. The Property has a strike-length of

over 50 kilometres in the Wabigoon Subprovince. Goldlund is an Archean lode-gold project

located in northwestern Ontario, approximately 60 kilometr es from the township of Dryden. The

claims that make up the land package cover the historic Goldlund and Windward mines.

On January 9, 2017, the Company announced an initial mineral resource estimate for Goldlund.

At a 0.4 g/t Au cut-off grade, the Goldlund deposit contains pit constrained Indicated Resources

of 9.3 million tonnes at 1.87 grams per tonne or 560,000 ounces of gold. At a 0.4 g/t Au cut-off

NR Hole ID Azimuth ° Dip ° Length (m) UTM East UTM North Section

NR5 GL-17-002 0 -90 158 545701 5527232 545700E

NR5 GL-17-003 180 -80 302 545701 5527231 545700E

NR5 GL-17-007 0 -90 293 545701 5527176 545700E

NR5 GL-17-008 0 -90 300 545701 5527156 545700E

NR5 GL-17-010 180 -80 305 545752 5527244 545750E

NR5 GL-17-011 0 -90 152 545752 5527235 545750E

NR5 GL-17-012 180 -80 299 545750 5527224 545750E

NR5 GL-17-013 0 -90 275 545748 5527213 545750E

NR5 GL-17-023 180 -80 131 545801 5527255 545800E

NR5 GL-17-042 0 -90 447 545851 5527209 545850E

NR5 GL-17-049 0 -90 326 545552 5527134 545550E

grade, the Goldlund deposit contains pit constrained Inferred Resources of 40.9 million tonnes

at 1.33 grams per tonne or 1,750,000 ounces of gold. The technical report for this resource

estimate has been filed on SEDAR and is also available on the Compan y’s website at

www.firstminingfinance.com.

ABOUT FIRST MINING FINANCE CORP.

First Mining is a mineral property holding company whose principal business activity is to

acquire high quality mineral assets wit h a focus in the Americas. The Company currently holds

a portfolio of 25 mineral assets in Canada, Mexico and the United States with a focus on gold.

Ultimately, the goal is to continue to increase its portfolio of mineral assets through acquisitions

that are expected to be comprised of gold, silver, copper, lead, zinc and nickel.

For further information, please contact Patrick Donnelly, President at 604-639-8854, or Derek

Iwanaka, Vice President, Investor Relations at 604-639 -8824, or visit our website at

www.firstminingfinance.com.

ON BEHALF OF FIRST MINING FINANCE CORP.

“Keith Neumeyer”

Keith Neumeyer

Chairman

Cautionary Note Regarding Forward-Looking Statements

This news release includes certain “forward -looking information” and “forward- looking

statements”(collectively “forward-looking statements”) within the meaning of applicable Canadian and

United States securities legislation including the United States Priv ate Securities Litigation Reform Act of

1995. All statements, other than statements of historical fact, included herein, without limitation,

statements relating the future operating or financial performance of the Company, are forward- looking

statements.

Forward-looking statements are frequently, but not always, identified by words such as “expects”,

“anticipates”, “believes”, “intends”, “estimates”, “potential”, “possible”, and similar expressions, or

statements that events, conditions, or results “will”, “may”, “could”, or “should” occur or be achieved.

Forward-looking statements in this news release relate to, among other things: the potential results of the

remainder of the Company’s Phase 1 drilling program at Goldlund and the timing of the dissemination of

such results by the Company ; the re-mobilization of drills at Goldlund for the purposes of drilling deeper

holes in Zone 1; the Company’s expectation that a Phase 2 drilling program at Goldlund will confirm that

Zones 1 and 7 are connected and continuous; plans relating to a Phase 2 drilling program at the Goldlund

project and the anticipated timing of such a program ; any upgrade to, or expansion of, the resources on

the Goldlund project; and the potential for further value to be unlocked at the project . There can be no

assurance that such statements will prove to be accurate, and actual results and future events could differ

materially from those anticipated in such statements. Forward-looking statements reflect the beliefs,

opinions and projections on the date the statements are made and are based upon a number of

assumptions and estimates that, while considered reasonable by the respective parties, are inherently

subject to significant business, economic, competiti ve, political and social uncertainties and

contingencies. Many factors, both known and unknown, could cause actual results, performance or

achievements to be materially different from the results, performance or achievements that are or may be

expressed or implied by such forward- looking statements and the parties have made assumptions and

estimates based on or related to many of these factors. Such factors include, without limitation, the

results of future exploration efforts at the Goldlund project; management’s discretion to refocus its

exploration efforts; fluctuations in the spot and forward price of gold, silver, base metals or certain other

commodities; fluctuations in the currency markets (such as the Canadian dollar versus the U.S. dollar);

changes in national and local government, legislation, taxation, controls, regulations and political or

economic developments; risks and hazards associated with the business of mineral exploration,

development and mining (including environmental hazards, industr ial accidents, unusual or unexpected

formations, pressures, cave- ins and flooding); the presence of laws and regulations that may impose

restrictions on mining; employee relations; relationships with and claims by local communities and

indigenous populations; availability and increasing costs associated with mining inputs and labour; the

speculative nature of mineral exploration and development; and title to properties. Readers should not

place undue reliance on the forward- looking statements and informati on contained in this news release

concerning these times. Except as required by law, First Mining does not assume any obligation to

update the forward- looking statements of beliefs, opinions, projections, or other factors, should they

change, except as required by law.