News

May 5, 2014

Klondex Mines Begins Drifting on new Karen Vein at Fire Creek; Average of 74.9 g/t (2.18 opt) Gold over 25 m (82 ft) of Strike Length

Vancouver, BC - May 5, 2014 - Klondex Mines Ltd. (TSX: KDX; OTCQX: KLNDF) ("Klondex" or the "Company") today announced that it began initial drifting at its Fire Creek Project on the Karen Vein, located 45.7 m (150 ft) west of the main decline, parallel to the Joyce Vein and Vonnie Vein. This structure is one of the western veins initially discovered in 2013 during development work on the secondary egress. In addition, nine drill holes were drilled to the west of the decline with the intent to define and extend the Karen Vein and test for additional paralleling structures in this zone (Figure 1).

To date, 25 m (82 ft) of exploration development has been completed along strike of the Karen Vein. The weighted average grade of samples from the Karen Vein is 74.9 g/t (2.18 opt) Au with an average width of 0.5 m (1.5 ft). This information was derived from face samples ranging from 4.6 g/t (0.14 opt) Au to 176.5 g/t (5.1 opt) Au. Channel samples from the Karen Vein, taken north and south of the 5360 access, are summarized and detailed in Table 1.

Brent Kristof, Klondex Mines COO, commented, "This is very encouraging news for Fire Creek because it is further evidence of the asset's considerable potential and a classic example of how additional mineralization is typically discovered during underground development in these epithermal vein systems. These initial results further support our theory that Fire Creek is under drilled. The addition of the Karen Vein provides us additional flexibility to execute the 2014 mine plan. At this stage, we do not know how many ounces will result but are encouraged by the fact that a mineralized vein is visible on the North and South Faces (Figure 2). We will continue to extend the drift along strike while our drills define the vertical extensions."

Mr. Kristof continued, "The Karen Vein has the potential to add to our current mineral resource estimate. We are in the process of planning an infill drilling program around the Karen Vein designed to extend the vein both along strike, north and south, and up and down dip. We expect that by year-end we will have an updated mineral resource estimate for Fire Creek that will include more of this western zone."

N.
5360
Access
S.
Table 1: Karen Vein Development
length, feet vein width, feet vein channel, g/t vein channel,
au opt
35-40 0.7 130.919 3.818
30-35 1.3 4.629 0.135
24-30 1.2 13.785 0.402
15-24 2.1 9.224 0.269
9-15 1.3 57.539 1.678
0-9 2.6 130.542 3.807
       
0-7 0.6 66.351 1.935
7-12 1.0 73.209 2.135
12-24 1.6 61.619 1.797
24-36 1.5 176.525 5.148
36-42 1.2 14.436 0.421
 Karen Overall Average 1.5 74.855 2.183


A total of six underground exploration drill holes from Muck Bay 5 (MB5) and three infill drill holes from the Main Decline to the west have defined and expanded the Karen Vein. Mineralization of the Karen Vein is consistent with the first intercept of FC-12-120U (January 20, 2014). Infill drilling from the Main Decline has increased our confidence in the vertical extent of the Karen Vein 45.7 m (150 ft) below and 10.7 m (35 ft) above the Main Decline. Previously drilled surface holes, underground drill holes and underground development suggests the Karen Vein can possibly extend at least 548.6 m (1800 ft) to the north and 106.7 m (350 ft) to the south along strike from MB5. Table 2 below shows the significant results of these drill holes.

Table 2: West Zone Drilling Intercepts
Hole ID Azi Dip TD From To Length From To Length Au Grade Vein Drill Station
    (m) (ft) (m) (ft) (g/t) Au (opt) Au
FC13121U 256 19 88.1 289 20.0 23.5 3.47 65.6 77 11.4 20.76 0.606 Karen DDS 20
/ MB 5
and         31.2 31.8 0.55 102.5 104.3 1.8 7.42 0.216  
and         63.4 64.1 0.70 208 210.3 2.3 7.31 0.213  
  
FC13122U 260 -11 246.0 807 14.0 15.1 1.13 46 49.7 3.7 19.12 0.558 Karen DDS 20
/ MB 5
and         17.1 17.4 0.30 56 57 1 17.00 0.496 Karen
and         47.2 47.9 0.70 154.7 157 2.3 11.79 0.344  
and         63.1 65.1 1.98 207 213.5 6.5 26.10 0.761  
and         133.2 134.7 1.52 437 442 5 6.48 0.189  
  
FC13123U 196 60 62.8 206 No Significant Results         DDS 20
/ MB 5
  
FC14125U 260 -20 211.5 694 14.9 17.9 2.96 48.9 58.6 9.7 13.21 0.385 Karen DDS 20
/ MB 5
and         78.3 79.9 1.52 257 262 5 14.50 0.423  
and         131.7 136.2 4.57 432 447 15 8.08 0.236  
  
FCU-0012 277 -19 306.9 1007 15.7 16.9 1.19 51.5 55.4 3.9 47.63 1.389 Karen DDS 20
/ MB 5
and         44.2 44.8 0.61 145 147 2 4.81 0.140  
and         58.7 59.3 0.58 192.6 194.5 1.9 7.60 0.222  
and         203.3 204.1 0.76 667 669.5 2.5 8.08 0.236  
and         208.3 208.7 0.40 683.3 684.6 1.3 3.45 0.101  
and         212.4 213.7 1.22 697 701 4 3.56 0.104  
and         227.7 231.3 3.66 747 759 12 4.87 0.142  
and         240.2 241.7 1.52 788 793 5 4.73 0.138  
and         244.4 245.0 0.55 802 803.8 1.8 4.85 0.141  
and         249.3 250.7 1.37 818 822.5 4.5 4.42 0.129  
and         254.7 256.6 1.95 835.6 842 6.4 3.83 0.112  
and         287.0 289.6 2.56 941.6 950 8.4 3.49 0.102  
and         294.7 295.7 0.94 966.9 970 3.1 4.14 0.121  
and         305.4 306.9 1.52 1002 1007 5 5.43 0.159  
  
FCU-0013 272 5 95.4 313 15.1 15.9 0.85 49.4 52.2 2.8 58.58 1.709 Karen DDS 20
/ MB 5
and         17.4 18.6 1.22 57 61 4 9.14 0.267 Karen
and         43.6 44.4 0.82 143 145.7 2.7 3.74 0.109  
  
FCU-0039 260 -32 52.7 173 17.4 17.8 0.43 57.1 58.5 1.4 7.98 0.233   Main
Decline
and         45.7 46.6 0.91 150 153 3 11.75 0.343 Karen
  
FCU-0040 260 -53 63.7 209 24.6 25.6 1.04 80.6 84 3.4 5.37 0.157   Main
Decline
and         55.5 57.6 2.13 182 189 7 9.64 0.281 Karen
  
FCU-0041 260 10 56.4 185 24.4 25.1 0.76 80 82.5 2.5 12.95 0.378   Main
Decline
and         49.9 51.1 1.22 163.8 167.8 4 175.89 5.131 Karen
and         53.0 54.0 0.94 174 177.1 3.1 16.55 0.483 Karen

Au cutoff 3.43 g/t (0.1 opt) for diluted grade

Mark Odell of Practical Mining LLC, an independent Qualified Person (Nevada PE 13708 and SME 2402150) for the purposes of National Instrument 43-101, reviewed and approved the contents of this press release.

Face sample assays were analyzed by SGS Minerals Services and drill core assays were analyzed by ALS Chemex of Elko, Nevada (independent laboratories), under Klondex staff supervision. For additional sampling parameters, please refer to the press release dated September 30, 2013.

About Klondex Mines Ltd. (www.klondexmines.com)
Klondex Mines is focused on the exploration, development and production of its high quality gold and silver projects. The Company is operating an ongoing bulk sampling program at its Fire Creek gold project located in north central Nevada. Fire Creek is in a mining-friendly jurisdiction, with onsite power and mining infrastructure, and near major producers. Midas, Klondex's newly acquired operating mine and milling facility are located ~100 miles north of Fire Creek.

For More Information
Klondex Mines Ltd.
Paul Huet
President & CEO
775-284-5757
investors@klondexmines.com

Alison Tullis,
Manager, Investor Relations
647-233-4348
atullis@klondexmines.com


Cautionary Note Regarding Technical Information and Forward-looking Information
A production decision at the Midas mine was made by prior owners of the mine, prior to the completion of the acquisition of the Midas mine by Klondex. To the knowledge of Klondex, this production decision was not based on a feasibility study of mineral reserves demonstrating economic and technical viability prepared in accordance with NI 43-101 but was based on internal studies conducted by the prior owner of the mine. Klondex has no reason to believe that the data on which such studies were based or that the results of such studies are unreliable. However, readers are cautioned that there is increased uncertainty and higher risk of economic and technical failure associated with such production decisions.

This news release contains certain information that may constitute forward-looking information under applicable Canadian securities legislation, including but not limited to information about current expectations on the timing and success of exploration sampling activities, the timing and success of mining operations and timing of an updated mineral resource estimate at the Fire Creek Project. This forward-looking information entails various risks and uncertainties that are based on current expectations, and actual results may differ materially from those contained in such information. These uncertainties and risks include, but are not limited to, the strength of the global economy; the price of gold; operational, funding and liquidity risks; the degree to which mineral resource estimates are reflective of actual mineral resources; the degree to which factors which would make a mineral deposit commercially viable are present; the risks and hazards associated with underground operations; and the ability of Klondex to fund its substantial capital requirements and operations. Risks and uncertainties about the Company's business are more fully discussed in the Company's disclosure materials filed with the securities regulatory authorities in Canada and available at www.sedar.com. Readers are urged to read these materials. Klondex assumes no obligation to update any forward-looking information or to update the reasons why actual results could differ from such information unless required by law.