Klondex Reports Strong Second Quarter 2016 Results; Achieves Record Revenue

On Track to Achieve Full Year Production and Cost Guidance

VANCOUVER, BC--(Marketwired - August 09, 2016) - Klondex Mines Ltd. (TSX: KDX) (NYSE MKT: KLDX) ("Klondex", the "Company", "we", "our", or "us") is pleased to announce its operational and financial results for the second quarter of 2016 as well as recent developments. This press release should be read in conjunction with our second quarter 2016 interim financial statements and related management's discussion & analysis ("MD&A"), which are available on our website (www.klondexmines.com), on SEDAR (www.sedar.com), and on EDGAR (www.sec.gov). All dollar amounts included in this press release are expressed in thousands of United States dollars, unless otherwise noted, and are based on our financial statements and MD&A, which were prepared in accordance with International Financial Reporting Standards ("IFRS") as issued by the International Accounting Standards Board. References to "Notes" refers to the notes contained in the second quarter 2016 interim financial statements.

Second Quarter 2016 Highlights

• Health, Safety, and Environmental - No lost-time injuries or environmental citations at Fire Creek, Midas or True North.
• Cash Flows and Liquidity - Maintained strong financial position and liquidity. Quarter end cash balance of $36.9 million, working capital of $29.5 million (ratio of 1.8:1), and total liquidity of $54.5 million when including the Revolver availability.
• Ounces Sold and Financial Results - Sold 37,914 gold equivalent ounces ("GEOs"), consisting of 32,499 gold ounces and 408,316 silver ounces, as ore grades and milling rates increased from the prior quarter. Revenue of $48.0 million from average selling prices per gold and silver ounce of $1,266 and $16.78, respectively. Net income of $7.1 million (or $0.05 per share - basic).
• Mine Operations and Performance Measures - Produced a record 41,436 GEOs. Averages operating metrics were: 947 ore tons milled per day, 0.44 oz/ton gold mill head grade, 5.72 oz/ton silver mill head grade, 0.52 oz/ton GEO mill head grade.

• True North - Completed drilling and rehab activities, expect to make a production decision in the third quarter of 2016. Anticipated recovery of 8,000 - 12,000 gold ounces in second half of 2016 should Company proceed with a production decision.
• Capital Expenditures - Spent $8.4 million at Fire Creek, $7.7 million at Midas, $5.8 million at True North, and $0.1 million at corporate for total capital spending of $21.9 million.

Recent Developments

• Acquisitions and Equity Offering - As discussed in detail within Note 22. Subsequent Events, on July 25, 2016, Klondex entered into (1) an agreement to purchase the Hollister mine ("Hollister") and the Esmeralda mine and milling complex ("Esmeralda") and (2) an agreement for a "bought deal" private placement.

Mr. Paul Huet, President and CEO, commented, "Our second quarter operational and financial performance was exceptional. We produced a record 41,436 GEOs for the quarter and generated over $23 million of operating cash flow. Our progress at True North has been beyond our expectations and we are looking forward to making a production decision in the third quarter." Mr. Huet continued, "In less than four years, Klondex has evolved from a junior exploration company with one project at Fire Creek to become an established gold producer with multiple projects and mills in two countries. I am very proud of our team for their important contributions to our success."

2016 Full Year Outlook

Nevada Operations

We are maintaining our targeted annual production costs and GEO production, which is expected to be weighted approximately 45%-50% in the first-half of 2016 and 50%-55% in the second-half of 2016. 2016 GEO production and grades are expected to progressively increase from the first half of the year to the second half of the year following the completion of planned first-half development and silling activities. The following table outlines annual guidance (compared to actual results) and includes all-in costs per gold ounce sold measures exclusive of True North, which was acquired during the first quarter of 2016 after the release of full-year guidance:

True North

We expect to produce 8,000 - 12,000 gold ounces during the second half of 2016 from a combination of processing gold in tailings and test stope mining. Subsequent to June 30, 2016, we began processing tailings and at the end of July we poured our first doré bar.

Consolidated Financial Results of Operations

When compared to the prior year quarter, second quarter 2016 Revenues were higher from selling an additional 5,731 gold ounces at a $53 higher average realized price, partially offset by a decrease in silver sales due to low silver grades. Production costs were in-line with expectations and decreased on a per ounce basis from the prior quarter as we benefited from an increased mining rate and higher grades due to additional working faces and sequencing abilities resulting from previously completed ore development. Depreciation and depletion increased from the prior year periods due to the sale of increased GEOs, offset by lower per ounce amounts from increased resource bases. General and administrative expenses increased in 2016 due to increased staff levels at the corporate office and severance payments. Finance charges were primarily related to the gold purchase agreement, finance leases, and the promissory note pursuant to the True North acquisition, which also resulted in business acquisition costs. Provision for legal settlement totaled $2.3 million for which no comparable amount existed in the prior year quarter.

Liquidity and Capital Resources

We generated $23.6 million of net operating cash flows and were provided $2.1 million from financing cash flows due to the exercise of share options and warrants; cash used in investing activities totaled $20 million. We maintained our strong financial position and as of June 30, 2016, had total liquidity of $54.5 million, consisting of $29.5 million in working capital and $25.0 million of borrowing availability under our March 2016 Revolver.

Second Quarter and Year To Date 2016 Summary Operational Results

As a result of increased mill throughput and higher grades at Fire Creek, during the second quarter of 2016 we produced a record 41,436 GEOs, bringing our year to date consolidated GEO production to 71,592 GEOs; which is approximately 48.5% of our annual guidance's midpoint range. 2016 operating targets anticipate GEO production and grades progressively increasing throughout the year which we expect will result in lower second half cost measures compared to the first six months of 2016. The 86,194 ore tons milled (average of 947 tons per day) represented a quarterly record and increased by an average of 131 tons per day over the first quarter of 2016, thereby accommodating planned lower ore grades in the first half of the year. Our second-half strategy entails continuing to increase the average daily milling rate at the Midas mill, which has a design capacity of 1,200 tons per day, to allow us to meet our annual production goal.

Despite planned lower first-half 2016 grades, we generated significant cash margins on a consolidated basis. Production cash costs per GEO sold decreased by $90 (or 13.1%) from the first quarter of 2016 to $595 in the second quarter of 2016, resulting in production cash costs per GEO sold of $636 for the first half of 2016. Second quarter 2016 production costs were positively impacted by increased tons and higher grades from additional working faces and sequencing abilities provided by previously completed ore development.

True North Project (Manitoba, Canada)

We expect to release an updated mineral resource estimate and be in a position to make a formal production decision in the third quarter of 2016. We have replaced 100% of the guides on the shaft and have repaired approximately 95% of the track (approximately 6,000 ft). Additional infrastructure included a new underground shop and new gear storage cut-outs, which are approximately 95% complete. We initiated testing of narrow vein long hole design to reduce dilution. We also received initial metallurgical testing results on existing tailings which indicate that the tailings can be processed through the existing mill flow sheet. We began processing tailings subsequent to June 30, 2016, and at the end of July poured our first doré bar.

Webcast and Conference Call

A conference call and webcast to discuss Klondex's second quarter results will be held on Wednesday, August 10, 2016, at 10:30am ET/7:30am PT. The conference call telephone numbers are listed below.

Canada & USA Toll Free Dial In: +1 800-319-4610

Toronto: +1 416-915-3239

International: +1 604-638-5340

Callers should dial in 5 to 10 minutes prior to the scheduled start time and ask to join the Klondex call. The webcast will be available on the Company's website or by clicking: http://services.choruscall.ca/links/klondex20160810.html.

About Klondex Mines Ltd. (www.klondexmines.com)

Klondex is a well-capitalized, junior-tier gold and silver mining company focused on exploration, development, and production in a safe, environmentally responsible, and cost-effective manner. The Company has 100% interests in two producing mineral properties: the Fire Creek Mine and the Midas Mine and ore milling facility, both of which are located in the state of Nevada, USA, as well as the recently acquired True North mine and mill in Manitoba, Canada.

Cautionary Note Regarding Technical Information and Forward-looking Information

This news release contains certain information that may constitute forward-looking information or forward-looking statements under applicable Canadian and U.S. securities legislation (collectively, "forward looking information"), including but not limited to information about current expectations on the timing and success of exploration and development activities, the timing and success of mining operations, the Company's ability to produce and sell gold and silver, the Company's achievement of the full-year projections for ounce production, metal grades and production costs, the Company's ability to meet annual operations estimates, the ability to maintain average daily milling rates, the Company's capital addition expenditures, the Company's intention and ability to monetize mineralized material, the results of economic studies regarding the Company's mineral projects, the Company's financial conditions, the successful execution and project development at all of the Company's mines and projects, and related permitting the completion of the Hollister acquisition, and the completion of the equity private placement. 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 and silver; 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 United States available at www.sedar.com and www.sec.gov, respectively. 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.