11

A GOLDEN LIGHT IN VOLATILE TIMES;NEAR-TERM CASH FLOWS @ FIRE CREEK

CORPORATE PRESENTATION KDX:TSX; KLNDF:OTCQX

June 2013

2

FORWARD-LOOKING STATEMENTS

Forward-Looking StatementsThis presentation may include certain statements that may be deemed “forward-looking statements." All statements in this presentation or those made by Klondex management or representatives, other than statements of historical facts, including the likelihood that bulk sampling will generate significant revenues and the possible results of future exploration are forward-looking statements. Although the Company believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results or developments may differ materially from those in the forward-looking statements. Factors that could cause actual results to differ materially from those in forward-looking statements include unsuccessful exploration results, inability to obtain necessary permits and regulatory approvals, changes in metals prices, currency fluctuations, changes in the availability of funding for mineral exploration, unanticipated changes in key management personnel, unavailability of necessary equipment and contractors, and general economic conditions. Mining is an inherently risky business. There is no guarantee that the Company will be able to carry out their work programs or that the results of those work programs will be successful. Accordingly, the actual results may differ materially from those projected in the forward-looking statements. For more information on the Company and the risks and challenges of their businesses, investors should review the Company filings available at www.sedar.com and www.klondexmines.com.

CAUTIONARY NOTE TO U.S. INVESTOR CONCERNING RESOURCESThis presentation uses the terms “Indicated and Inferred” resources as defined in accordance with National Instrument 43-101. While such terms are recognized and required by Canadian Securities laws, the United States Securities and Exchange Commission does not recognize them. Under the United States standards, mineralization many not be classified as a “reserve” unless the determination has been made that the mineralization could be economically and legally produced or extracted at the time the reserve calculation is made. “Inferred Resources” have a great amount of uncertainty as to their economic and legal feasibility and readers are cautioned not to assume that all or any part of the inferred resources exists or is economically mineable.

3

MANAGEMENT – OPERATIONS-FOCUSED

Paul Huet – President, CEO and Director● 25 years high-grade mining experience, particularly in narrow vein gold mining in Nevada● Led team taking Hollister Mine to 80k-100k gold equivalent oz/year; Mine Manager of Newmont’s Midas Mine; COO at Premier Gold● Extensive experience/knowledge in Mine Operations, Engineering, Geology, Exploration, Permitting and Safety

Jorge Avelino – Chief Financial Officer● 25+ years of accounting and financial management experience across range of industries and public companies● Public resource company experience since 1986

Mike Doolin – General Manager● 25-years with extensive experience in design and permitting of mining projects● Substantial experience in milling, metallurgy and assay operation; successfully managed large and small teams on multiple projects● Most recently served with Great Basin Gold as Esmeralda Mill Manager

Dr. Shuai Chen – Chief Engineer● 17-yrs designing projects, specializing in underground mine design, planning and ground and cost controls in Nevada● Previously Chief Engineer for Atna Resources’ Pinson mine, Senior Engineer for Great Basin Gold’s Hollister mine and Senior Mining

Engineer for Newmont’s Midas Mine

Steve McMillin – Chief Geologist● 25 years experience including grass-roots, near-mine exploration and underground production● Previously with US Steel, Newmont Exploration Ltd., Anglo Gold Jerritt Canyon, Queenstake Resources, Midway Gold

Sid Tolbert – Mine Superintendent● 20 years of mining experience with extensive knowledge in the extraction of narrow, high-grade gold vein systems in Nevada● 14 years with Newmont, including Mine Superintendent and Foreman at the Midas Mine and its Vista project at Twin Creeks● Extensive knowledge and understanding of underground mining methods, ground conditions, budgets and dilution management

Lucy Downer – Environmental Manager ● 18 years of environmental experience and has been instrumental in the success of several mining and environmental projects across North

America, primarily within Nevada● Graduated from Queens University in Ontario with an Engineering: Mining and Mineral Processing degree

4

KLONDEX - HIGHLIGHTS

● Proven operations-focused management team● High-grade gold in safe mining jurisdiction● Straightforward and simple deposit● Fully-permitted to initiate small scale gold production at

Fire Creek in 2013● Low cash costs expected for 2013 trial mining

● Opportunity for upside: KDX trading at a discount to peers:

EV/oz: $33/oz (MI&I) vs. avg. $45/oz

Fire Creek

Re-logging core Updated Resource PEA

Vent-raise Access

Final Milling Agreement

Small-Scale Gold

Production from Bulk Sample at

Fire Creek - Q3 2013

Critical Path to Cash Flows:

Ongoing Milestones:

5

FIRE CREEK - INFRASTRUCTURE ALREADY IN PLACE

Strategic location with local infrastructure: ● Located in the heart of Nevada’s gold trends with world-class

mines as neighbours At the intersection of Northern Nevada Rift (NNR) &

Battle Mountain Trends NNR host to Midas, Hollister, and Fire Creek: narrow

vein epithermal gold deposits● Fire Creek and the Jerritt Canyon Mill accessible via federal

and state roads● Favourable regulatory environment● 5000 ft+ of underground workings already excavated (ramp,

decline and cross cuts)● Power substation complete and connection to transmission

line completed March 2013 Connection to site from substation pending

JERRITT CANYONMILL

6

FIRE CREEK - CASH FLOWS EXPECTED 2013

● Bulk Sample to begin in Q3 2013 Toll milling and transportation agreement with Veris Gold to

Jerritt Canyon Mill, 120 miles NE $112.50/ton milling; $36/ton transportation Toll milling and transportation costs: $148.50/ton

● Start extracting from the Joyce Vein, at crosscut 5400 Joyce Vein (A Vein): 0.9 m @ 95.5 g/t Vonnie Vein (B Vein): 1.5m @ 43.5 g/t

● 2013: deliver ~8,000 ozs AuEq from bulk sample● Upon completion of updated resource and PEA, projections

for 2014 and 2015 targets will be available.● Initial test-work supports +90% Au recoveries

N

500 ft 1000 ft

Portal

5400 cross cut

5730 cross cut

Surge Ponds and

Water Treatment

PlantOffice buildingsand core shack

Vonnie Vein

Joyce Vein

7

2013 UNDERGROUND IN-FILL DRILLING PROGRAM

● Heavy red lines: 2013 u/g infill drill program: ~5 holes per fan● Heavy black lines, completed 2013 fans, assays pending

0.48 opt Au over 42.8 ft

13 opt Au

UNDEREXPLOREDWEST ZONE

N

Target continuity of mineralization to the east●Drilling on 23m (75ft) spacing●~ 9,754m (32,000 ft) of drilling●Prior surface was drilling on 50m (164ft) spacing● 16 easterly drill fans, 3 - 4 holes per fan●East/West drill fan 9 complete; Fan1 assays

pending; currently drilling Fan 2●Five westerly drill holes in fan 9 to test southern

extension of vent raise access

8

FIRE CREEK – RESOURCE MODEL

● Current resource of 1.6M ozs Indicated and 458k ozs Inferred, dated May 2011

● Updated resource estimate targeted mid-2013, by Micon International Will include 240,000 ft of core re-logging & geology

review; and an additional 120,000 feet of core drilling

●Source: Technical Report Data as of May 21, 2011; Released September 12, 2011Note: *At variable Au prices we can selectively mine areas and remain economic

Klondex Mines Ltd.NI 43-101 Compliant Resource

Gold Cutoff(g/t) Category

Metric Tonnes

Grade(g/t)

Gold(oz)

4.0 Indicated 5,176,050 9.9 1,647,052

4.0 Inferred 1,732,810 8.2 458,084

7.0 Indicated 2,145,283 17.6 1,215,019

7.0 Inferred 555,043 12.5 223,794

* Fire Creek remains economic at lower gold prices

Underexplored onstrike and at depth

MAIN ZONE CONTINUITY, WEST ZONE DISCOVERYMAIN ZONE CONTINUITY, WEST ZONE DISCOVERY

Tremendous exploration potential● Gold resources on less than 7% of the land package● Main Zone: Underground in-fill drilling

Joyce Vein: width and grade increases north from 5400 drift to 5370 drift

Joyce Vein: new potential splay before the 5400 drift 496.7 g/t (14.5 opt) Au over 1.82m (6ft) (press release: Jan. 2, 2013) True width at 5370-ACC crosscut estimated at 1.7m (5.5ft)

● West Zone: mineralization discovered by excavating the vent raise access 3.6opt (123.9g/t) Au over 5ft (1.5m) at 528ft –533ft Fan 9: drilling in all 5 holes intercepted gold

mineralization● South Zone: Near Portal discovery (April 2013)

0.53 opt (15.5 g/t) Au over 42.8ft (13m) FC12-029U

Exploration drifting at 5370 cross cut in Joyce Vein

N

West Zone: Fan 9 drilling

10

FIRE CREEK BULK SAMPLE PERMITS

● Issued Permits Secured NDEP 6-month temporary discharge permit: 3/13 BLM permit # N-56088 Amendment allowing NV Energy to connect to offsite substation: 12/12 Class II Air Quality Operating Permit #AP1041-2774 (State): 3/11 & 7/12 Water Pollution Control Permit #NEV2007104 (State): 3/11, 11/11 & 6/12 BLM Notice to Proceed (Fed): 9/10

● Future Permits Rapid Infiltration Basin (RIB) Permit – in process

Geotechnical work begun to complete final RIB design Easements to bring power on site – in process Revised Plan of Operations (BLM) and Water Pollution Control Permit (State) – in process NEPA documentation to expand to full production – initiated

11

KLONDEX ROAD MAP

Status

Est. Costs

US $M

2012Q3 Q4

2013Q1 Q2 Q3 Q4

2014Q1 Q2 Q3 Q4

Strengthen Board -

New CEO and Operations Team Complete -

Funding ($23M Equity, $7M Debt) Complete -

Infill drilling – underground Ongoing $ 2.9

Mine infrastructure Complete $ 1.0

Examine, re-log core, pictures and metallurgy Complete $ 1.0

Prepare new resource Ongoing $ 0.3

Prepare PEA Ongoing $ 0.3

Vent raise construction Ongoing $ 1.4

Milling agreement Complete -

Power line installation Ongoing $ 1.3

Remaining drifting underground Ongoing $ 3.2

Temporary Discharge Permit Complete -

Water management (RIB) Ongoing $ 0.8

NEPA documentation to expand to full production Ongoing $ 0.5

Initiate Bulk Sample -

Total Estimated Costs $12.7

Total Spent to Date $ 6.5

✔✔

✔✔ ✔✔

✔

✔

✔

✔

12

KLONDEX MINES LTD.

Symbol TSX: KDX OTCQX: KLNDF

52 Week Range C$0.91 to C$1.85

Average Volume (3M) 52k

Shares Issued and Out 64.4M

Fully Diluted 85.7M

Market Cap C$87M

Enterprise Value C$89M

Cash C$7.0M

Debt:Long-Term – due Jan 2015 C$8.6M

Board of DirectorsLarry Phillips, Chairman, Co-founder IAMGoldRodney Cooper, Labrador Iron MinesJamie Haggarty, JELL AdvisorsPaul Huet, President and CEOWilliam Matlack, Scarsdale EquitiesBlair Schultz, K2 and Associates

13

KDX SHARE PRICE PERFORMANCE VS. PEERS

3-mo Average Daily Trading Volume: 69,700

Source: Morningstar.com

14

KLONDEX SPONSORSHIP

● Klondex’s top shareholders include leading resource investors and substantial management ownership.

* Includes shares, warrants, options

Top Shareholders Coverage

Equity Research Analyst

Casimir Capital Eric Winmill

Mackie Research Capital Barry Allan

MGI Securities Marc Pais

GMP Securities Oliver Turner

Gold Energy & Tech Stocks Jay Taylor

The Mining Speculator Greg McCoach

Ownership* % FDOutstanding

K2 & Associates 11.5M 13.4%

Glenn Pountney 7.8M 9.1%

U.S. Global Investors 4.5M 5.2%

William Solloway 3.8M 4.4%

Van Eck Global 3.0M 3.5%

PSP-MTL Private Sector Pension 3.0M 3.5%

Investors Group 1.8M 2.8%

William Matlack, Director 1.4M 1.7%

Paul Huet, CEO 1.2M 1.4%

Brendan Donohoe 1.1M 1.3%

Top Shareholders 38M 46.2%

Ownership (%)

Mgmt and Insiders

Institutional

Retail

15

ATTRACTIVE VALUATION VS. JUNIOR GOLD PEERS

• based on MI&I resources, up to May 3, 2013• KDX: Ind. 1.6M oz Au; Inf. 0.4M oz Au.• Source: FactSet, Bloomberg, equity research and corporate

disclosure• Note: Gold equivalent resources and production shown on a

precious metals basis only; enterprise value adjusted to exclude minority interest when calculating resource and production valuation multiples

Klondex sells at a significant discount toits peer group on an EV/resource basis, yet Klondex has:

1. Strong management & Board2. Funding in place3. Great location4. Impressive grade5. Significant resource6. Permitting largely in place7. Direct site grid power imminent8. Paved road access to toll mill9. Near-term production from bulk

sample

EV / MI&I AuEq (Inclusive)

16

CONTACT INFORMATION

Klondex Mines Ltd.Suite 600, 595 Howe StreetVancouver, British ColumbiaV6C 2T5www.klondexmines.com

Paul Huet, President & CEO807-939-2841investors@klondexmines.com

Alison Tullis, Manager, IR647-233-4348atullis@klondexmines.com

Investors & Media:David Collins, Toni TrigianiCatalyst Global LLC212-924-9800 kdx@catalyst-ir.com

Fire Creek worker/contractor mine safety board

KDX:TSX KLNDF:OTCQX