Chronicle Journal: Finance

Kirkland Lake Gold Extends High-Grade Gold Mineralization at Macassa, New Gold System Discovered at Depth

TORONTO, ONTARIO -- (Marketwired) -- 06/28/17 --


--  South Mine Complex ("SMC") extended 259 metres to east of known resource
    (key intercepts: 65.8 g/t over 2.1m, 160.3 g/t over 0.3m, 19.2 g/t over
    0.9m)

--  Mineralization in Lower SMC extended 65m to depth (key intercepts: 224.2
    g/t over 1.8m)

--  Lower SMC extended 60m to west (key intercepts: 302.1 g/t over 0.8m,
    including 530.7 g/t over 0.4m)

--  High-grade mineralization intersected in new hangingwall system
    discovered in Lower SMC (key intercepts: 82.6 g/t over 1.7m, including
    214.4 g/t over 0.6m, 1,336.5 g/t over 1.4m, including 4,081.7 g/t over
    0.5m).

Kirkland Lake Gold Ltd. ("Kirkland Lake Gold" or the "Company") (TSX: KL)(OTCQX: KLGDF) is pleased to report new high-grade drill intercepts from underground exploration drilling on the South Mine Complex ("SMC") at the Macassa Mine, Kirkland Lake, Ontario. Recent results from twenty-five diamond drill holes totaling 12,068 metres ("m") utilizing two drill rigs have intersected newly discovered mineralization extending the SMC east of the currently defined resource area and extending the current resource area on the Lower SMC Zone. In addition, drilling in the Lower SMC returned significant high-grade mineralization resulting in the discovery of a new hangingwall system. Follow up drilling on the new system is planned during the remainder of 2017.

Tony Makuch, President and Chief Executive Officer of Kirkland Lake Gold, commented: "The results announced today demonstrate the significant opportunity we have to grow resources and extend mine life at our world-class, high-grade Macassa mine. The mine is our Canadian flagship operation with current reserves totalling 2.0 million ounces at an average grade of 20.8 grams per tonne, a large base of resources to support future growth, and expected 2017 production of over 190,000 ounces at operating cash costs of under $550 per ounce. Today's drill results include the intersection of new high-grade mineralization with visible gold associated with the easterly strike extension of the SMC. Also encouraging is the continued expansion of the Lower SMC Zone, including the discovery of a new hangingwall gold system that returned multiple high-grade intersections and represents an important new target for future exploration drilling.

"We currently have two underground drill rigs in operation to further explore for expansion opportunities in the SMC. Additionally, we have five surface drills working as part of a program to test the easterly strike extension of the SMC Zone and the Amalgamated Break, both of which are high priority targets for the Company. Results of this program will be released as they become available."

Underground Drilling Program Continues to Extend SMC to East

Recent drilling conducted from the easternmost drill station on the 5300 foot level ("5300 Level") concentrated on both infilling gaps in drill hole coverage and expanding the SMC to the east, with SMC-style mineralization extending an additional 259m east of the year-end mineral resource outline. Seventeen drill holes (7,603m) were completed during this phase of drilling, with assays are pending from three of the drill holes (reference figures 2 and 4).

Drill hole 53-3225 returned 160.3 g/t(1) over a core length of 0.3m with a second zone returning 19.2 g/t(1) over a core length of 0.9m. These two intersections represent the furthest east underground exploration drilling results to date and are located 259m east of the currently defined resource area.

Drill hole 53-3224 returned 65.8 g/t(1) Au over a core length of 2.1m. This intersection extends the SMC approximately 213m east of the current resource area. Surface drilling indicates that mineralization associated with the SMC may extend an additional 600m further east from drill hole 53-3224 as reported in the Company's press release dated January 19th, 2016 (DD AB-15-92, 29.5 g/t over 0.3m core length).

Most of the drilling in this program is considered reconnaissance in nature, testing both potential strike and depth extensions to the SMC, along a strike length of approximately 300m and to a vertical depth of 366m below the drill bay on the 5300 Level east exploration drift. The drilling follows up on the reconnaissance surface exploration program that was reported in the Company's press releases dated November 3, 2015 and January 19th, 2016. The mineralization encountered to date is typical SMC style, with shallow dipping veins mineralized with fine visible gold and tellurides and hosted within both feldspar porphyry and basic syenite. At least five individual vein sets have been intersected with follow up drilling currently underway at closer-spaced centres to define potential resources. The SMC remains open to the east along strike and up dip. The Company is in the process of extending the 5300 Level east exploration drift 152m east with 111m completed to date. A new drill bay will be excavated in August with a second drill scheduled to continue step out drilling to the east in September.

Three of the drill holes, collared at shallow dips, were extended to test for potential mineralization associated with the historically-mined Main Break at the former Kirkland Minerals Mine, and below the lowest level (5850 foot elevation). Two of the three drill holes intersected structure and veining that the Company believes may be associated with, and hangingwall to, the Main Break. Drill hole 53-3218 returned 318.2 g/t over a core length 0.3m at the 6471 foot elevation and 13.4 g/t over a core length of 0.9m at the 6718 foot elevation. Drill hole 53-3220 returned 72.3 g/t over a core length of 0.8m, including 161.5 g/t over a core length of 0.3m, at the 6062 foot elevation. A second vein returned 15.1 g/t over a core length of 0.5m at the 6074 foot elevation. The 5300 Level east exploration drift is ideally located for follow-up drilling on this new exploration opportunity.

Underground Drilling Continues to Expand Lower SMC to Depth and to West

The drill platforms are located on both the east and west end of the 5300 Level exploration drifts (reference Figures 1, 2 & 4). Eight diamond drill holes (4,465 metres) have been completed to date, with one drill hole abandoned due to deviation. Drilling is expected to continue for the remainder of the year. Of particular significance are results from drill hole 53-3165 which include the intersection of high-grade mineralization in a newly discovered hangingwall, demonstrating strong potential for further expansion and mineral resource conversion. Key results in the new discovery area include hole 53-3165 which intersected 82.6 g/t Au over a 1.7m core length, including 214.4 g/t(1) Au over a 0.6m core length, as well as hole 53-3144 which intersected 1,336.5 g/t Au over a 1.4m core length, including 4,081.7 g/t(1) Au over a 0.5 m core length.

Other results from underground drilling on the 5300 Level include hole 53-3146 which intersected 224.2 g/t(1) Au over 1.8m (Estimated True Width "ETW" 0.7m) approximately 65m below previously reported drilling. Hole 53-3165 intersected 302.1 g/t Au over 0.8m (ETW 0.3m), including 530.7 g/t(1) Au over 0.4m (ETW 0.1m). The hole demonstrated a continuing southeast trending plunge to the mineralization, and extended the resource area approximately 60m to the west.

Intersections in this release on both the New South Zone and FW-3 zones are clustered in close proximity and will have no impact on the existing resources or reserves associated with these zones. Recent drilling from the easternmost drill bay, has demonstrated that SMC-style mineralization continues to extend approximately 700 feet east of the 2016 year-end mineral resource outline. Additional drilling is in progress at this time, with the exploration objective of expanding SMC mineralization to the east.

The Lower SMC represents a steep dipping splay from the New South Zone, with the two zones intersecting at 5200 foot elevation. The zone exhibits a gradual steepening in dip from -50 degrees to -80 degrees at depth, and has been intersected as deep as 7027 foot elevation where it remains open to depth. The dip is unique to the SMC which generally exhibits much shallower dipping geometry (reference Figure 3).

Figures and Tables

All tables are included at the bottom of this press release. To see a PDF of the tables and figures as references in this news release, please visit the following links:

http://media3.marketwire.com/docs/Kirkland-Lake-Gold-June28_tables1-2.pdf - tables

http://media3.marketwire.com/docs/Kirkland-Lake-Gold-June28-figures1-4.pdf - figures

Qualified Person

The Company's exploration programs at Macassa are conducted under the supervision of Stewart Carmichael, P.Geo., Regional Exploration Manager. Mr. Carmichael is the 'qualified person' for the purpose of National Instrument 43-101, Standards of Disclosure for Mineral Projects, of the Canadian Securities Administrators, and has reviewed and approved the scientific and technical information in this news release.

QA/QC Controls

The Company has implemented a quality assurance and control ("QA/QC") program to ensure sampling and analysis of all exploration work is conducted in accordance with best practices. The drill core is sawn in half with one half of the core samples shipped to Swastika Laboratories in Swastika, Ontario. The other half of the core is retained for future assay verification. Other QA/QC includes the insertion of certified reference standards, blanks and the regular re-assaying of pulps and rejects at alternate certified labs. Gold analysis is conducted by fire assay using atomic absorption or gravimetric finish. The laboratory re-assays at least 10% of all samples and additional checks may be run on anomalous values.

Non-GAAP Measures

Operating cash costs per ounce sold is a Non-GAAP measure. Operating cash costs include mine site operating costs such as mining, processing and administration, but exclude royalty expenses, depreciation and depletion, share-based payment expenses and reclamation costs. Operating cost per ounce is based on ounces sold and is calculated by dividing operating cash costs by gold ounces sold. For a full review of non-GAAP measure disclosures, please see the Company's press release, entitled, "Kirkland Lake Gold Reports Strong Financial Results in Q1 2017; Improves 2017 Outlook with Increased Production and Reduced Costs," issued on May 4, 2017.

About Kirkland Lake Gold Ltd.

Kirkland Lake Gold Ltd. is a mid-tier gold producer with 2017 production targeted at 530,000 - 570,000 ounces of gold from mines in Canada and Australia. The production profile of the company is anchored from two high-grade, low-cost operations, including the Macassa Mine located in Northeastern Ontario and the Fosterville Mine located in the state of Victoria, Australia. Kirkland Lake Gold's solid base of quality assets is complemented by district scale exploration potential, supported by a strong financial position with extensive management and operational expertise.

For further information on Kirkland Lake Gold and to receive news releases by email, visit the website www.klgold.com.

Cautionary Note Regarding Forward-Looking Information

This Press Release contains statements which constitute "forward-looking statements" within the meaning of applicable securities laws, including statements regarding the plans, intentions, beliefs and current expectations of the Company with respect to the future business activities and operating performance of the Company. The words "may", "would", "could", "should", "will", "intend", "plan", "anticipate", "believe", "estimate", "expect" and similar expressions, as they relate to the Company, are intended to identify such forward-looking statements. Investors are cautioned that forward-looking statements are based on the opinions, assumptions and estimates of management considered reasonable at the date the statements are made such as, without limitation, opinion, assumptions and estimates of management regarding the Company's business, including but not limited to; the continued exploration programs on the SMC mineralization, the timing and results thereof; the ability to continue to expand the SMC and to increase its level of resources and the timing thereof; the potential to increase the level of resources and reserves;

the amount of future production over any period; and assumptions made relating to operating cash costs. Such opinions, assumptions and estimates, are inherently subject to a variety of risks and uncertainties and other known and unknown factors that could cause actual events or results to differ materially from those projected in the forward-looking statements. These factors include the Company's expectations in connection with the projects and exploration programs being met, the impact of general business and economic conditions, global liquidity and credit availability on the timing of cash flows and the values of assets and liabilities based on projected future conditions, fluctuating gold prices, currency exchange rates (such as the Canadian dollar versus the United States Dollar), possible variations in ore grade or recovery rates, changes in accounting policies, changes in the Company's corporate mineral reserves and resources, changes in project parameters as plans continue to be refined, changes in project development, construction, production and commissioning time frames, the possibility of project cost overruns or unanticipated costs and expenses, higher prices for fuel, power, labour and other consumables contributing to higher costs and general risks of the mining industry, failure of plant, equipment or processes to operate as anticipated, unexpected changes in mine life, seasonality and unanticipated weather changes, costs and timing of the development of new deposits, success of exploration activities, permitting time lines, government regulation of mining operations, environmental risks, unanticipated reclamation expenses, title disputes or claims, and limitations on insurance, as well as those risk factors discussed or referred to in the Company's annual Management's Discussion and Analysis and Annual Information Form for the year ended December 31, 2016, and the Company's Management's Discussion for the first quarter ended March 31, 2017, filed with the securities regulatory authorities in certain provinces of Canada and available at www.sedar.com.

Should one or more of these risks or uncertainties materialize, or should assumptions underlying the forward-looking statements prove incorrect, actual results may vary materially from those described herein as intended, planned, anticipated, believed, estimated or expected. Although the Company has attempted to identify important risks, uncertainties and factors which could cause actual results to differ materially, there may be others that cause results not to be as anticipated, estimated or intended. The Company does not intend, and does not assume any obligation, to update these forward-looking statements except as otherwise required by applicable law.

(1) Visible gold present in drill intercept, ETW - Estimated True Width, All drill results are presented in Tables 1 and 2.

Table 1: SMC East Underground Exploration (5300 Level)

Table 1, below summarizes the latest SMC East underground drilling results in metric values:


----------------------------------------------------------------------------
                                                    CORE
DRILL                   DIP  AZIMUTH  FROM     TO LENGTH       ASSAY     CUT
HOLE          ZONE (degree)(degrees)   (m)    (m)    (m)       (g/t)   (g/t)
----------------------------------------------------------------------------
53-3137        SMC      -24      025 556.0  556.7    0.7         8.2       -
----------------------------------------------------------------------------
53-3139        SMC      -30      028 275.4  275.7    0.3        19.9       -
------------------                  ----------------------------------------
               SMC                   288.1  288.6    0.5        16.5
------------------                  ----------------------------------------
               SMC                   322.6  322.9    0.3        13.0       -
----------------------------------------------------------------------------
53-3140        SMC      -74      314 198.3  199.8    1.5        10.3       -
------------------                  ----------------------------------------
               SMC                   265.8  267.0    1.2        14.4       -
------------------                  ----------------------------------------
               SMC                   495.3  496.0    0.7        24.0       -
----------------------------------------------------------------------------
                                                                  No
               SMC      -75      287                     Significant
53-3159                                                       Values       -
----------------------------------------------------------------------------
53-3160        SMC      -74      348 206.7  207.3    0.5        11.7       -
------------------                  ----------------------------------------
               SMC                   358.4  358.9    0.5         7.2       -
----------------------------------------------------------------------------
53-3214        SMC      -62      340 201.7  202.4    0.7   202.6, VG       -
----------------------------------------------------------------------------
53-3215        SMC      -68      343 206.2  206.7    0.5        22.3       -
------------------                  ----------------------------------------
SMC                                  294.3  294.8    0.5        88.1       -
----------------------------------------------------------------------------
                                                           203.0 VG,
53-3216        SMC      -66      357 196.7  197.0    0.3        Tell       -
------------------                  ----------------------------------------
                                                            34.3 VG,
               SMC                   212.2  212.5    0.3        Tell       -
----------------------------------------------------------------------------
53-3218        SMC      -36      015 233.2  234.1    0.9       146.4 67.2(i)
------------------                  ----------------------------------------
                                                           290.4 VG,
Including                            233.2  233.6    0.4        Tell       -
------------------                  ----------------------------------------
               SMC                   268.1  268.4    0.3        25.4       -
------------------                  ----------------------------------------
Main
 Break
 Related?                            667.6  667.9    0.3   318.2, VG       -
------------------                  ----------------------------------------
Main
 Break
 Related?                            810.6  811.5    0.9        13.4       -
----------------------------------------------------------------------------
                                                              Assays
53-3219        SMC      -36      351                         Pending       -
----------------------------------------------------------------------------
              Main
             Break      -25      005
53-3220   Related?                   692.7  693.5    0.8        72.3    56.9
------------------                  ----------------------------------------
Including                            693.2  693.5    0.3   161.5, VG       -
------------------                  ----------------------------------------
Main
 Break
 Related?                            708.4  708.9    0.5        15.1       -
----------------------------------------------------------------------------
                                                              Assays
53-3221        SMC      -49      010                         Pending       -
----------------------------------------------------------------------------
53-3222        SMC      -36      024 269.0  269.4    0.4        18.2       -
------------------                  ----------------------------------------
               SMC                   280.6  281.3    0.7        39.4       -
------------------                  ----------------------------------------
               SMC                   291.8  292.3    0.5        16.5       -
------------------                  ----------------------------------------
               SMC                   294.0  295.3    1.3         9.6       -
----------------------------------------------------------------------------
53-3223        SMC      -47      032 247.7  248.2    0.5   247.9, VG       -
----------------------------------------------------------------------------
53-3224        SMC      -62      034 217.2  219.3    2.1        65.8       -
----------------------------------------------------------------------------
Including                            217.2  217.6    0.4   118.6, VG       -
----------------------------------------------------------------------------
and                                  217.6  218.1    0.5       101.8       -
----------------------------------------------------------------------------
and                                  219.0  219.3    0.3        66.9       -
----------------------------------------------------------------------------
53-3225        SMC      -36      040 350.2  350.5    0.3   160.3, VG       -
------------------                  ----------------------------------------
               SMC                   380.9  381.8    0.9    19.2, VG       -
----------------------------------------------------------------------------
                                                              Assays
53-3226                                                      Pending       -
----------------------------------------------------------------------------

NSV = No significant value, VG = Visible Gold; Tell = Tellurides; (i)Cut = cut to 120.0 g/t.

True widths have not been determined at this time.

Table 2: Lower SMC Underground Exploration (5300 Level)

The table below summarizes the latest underground drilling results in metric values:


----------------------------------------------------------------------------
                                                 CORE  TRUE
DRILL                 DIP  AZIMUTH  FROM    TO LENGTH WIDTH    ASSAY     CUT
HOLE        ZONE (degree)(degrees)   (m)   (m)    (m)   (m)    (g/t)   (g/t)
----------------------------------------------------------------------------
             New
53-3143    South      -71      351  75.7  76.6    0.9   0.7 96.1, VG       -
----------------                  ------------------------------------------
            FW-3                   113.2 113.6    0.4   0.4 92.0, VG       -
----------------------------------------------------------------------------
53-3144   New HW      -76      331 161.5 162.9    1.4     ?  1,336.5 46.8(i)
----------------                  ------------------------------------------
                                                            4,081.7,
Including                          161.5 162.0    0.5     ?       VG
----------------                  ------------------------------------------
       Lower SMC                   545.6 548.9    3.3   1.0     26.4       -
----------------                  ------------------------------------------
Including                          545.6 546.3    0.7   0.3 81.8, VG
----------------                  ------------------------------------------
and                                546.3 546.6    0.3   0.1 35.9, VG
----------------                  ------------------------------------------
          New FW                   586.4 586.7    0.3     ?     61.5       -
----------------------------------------------------------------------------
             New
53-3145    South      -77      347  84.4  85.3    0.9   0.9     19.6       -
----------------                  ------------------------------------------
            FW-3                   118.2 118.5    0.3   0.3 44.9, VG       -
----------------                  ------------------------------------------
       Lower SMC                   551.1 551.7    0.6   N/C      9.5       -
----------------                  ------------------------------------------
              AK
           Break
               ?                   804.6 804.9    0.3     ?     29.3       -
----------------------------------------------------------------------------
53-3146     FW-3      -73      349 115.9 116.2    0.3   0.3 43.5, VG       -
----------------                  ------------------------------------------
       Lower SMC                   466.6 468.4    1.8   0.7    224.2 64.5(i)
----------------                  ------------------------------------------
                                                              748.5,
Including                          466.6 467.0    0.4   0.2 VG, Tell
----------------                  ------------------------------------------
                                                           73.7, VG,
and                                467.0 467.3    0.3   0.1     Tell
----------------                  ------------------------------------------
and                                467.3 467.7    0.4   0.1 90.5, VG
----------------------------------------------------------------------------
53-3162   New HW      -60      266 388.8 391.2    2.4     ?      5.1       -
----------------                  ------------------------------------------
          New HW                   438.3 438.9    0.6     ?     10.1
----------------                  ------------------------------------------
       Lower SMC                   457.7 458.1    0.4   N/C      NSV       -
----------------                  ------------------------------------------
          New FW                   512.4 513.2    0.8     ?     16.8       -
----------------------------------------------------------------------------
             New
53-3163    South      -65      268  91.7  92.2    0.5   0.4     11.3       -
----------------                  ------------------------------------------
            FW-3                   130.4 130.7    0.3   0.3 25.3, VG       -
----------------                  ------------------------------------------
          New HW                   450.7 451.2    0.5     ? 24.7, VG       -
----------------                  ------------------------------------------
       Lower SMC                   530.4 531.2    0.8   N/C      3.1       -
----------------------------------------------------------------------------
53-3164     FW-3      -65      275 125.1 125.4    0.3   0.3 12.3, VG       -
----------------                  ------------------------------------------
Lower SMC                          465.8 467.1    1.3   N/C      2.1       -
----------------                  ------------------------------------------
New FW                             533.4 533.7    0.3     ? 19.2, VG       -
----------------------------------------------------------------------------
53-3165   New HW      -71      280 489.1 490.8    1.7     ?     82.6 50.0(i)
----------------                  ------------------------------------------
                                                              214.4,
Including                          489.1 489.7    0.6     ? VG, Tell
----------------                  ------------------------------------------
       Lower SMC                   506.9 507.7    0.8   0.3    302.1112.5(i)
----------------                  ------------------------------------------
                                                              530.7,
Including                          506.9 507.3    0.4   0.1 VG, Tell
----------------                  ------------------------------------------
And                                507.3 507.7    0.4   0.2105.8, VG
----------------------------------------------------------------------------

NSV = No significant value, VG = Visible Gold; Tell = Tellurides; (i)Cut = cut to 120.0 g/t.

? = True width unknown

N/C = True width not calculated, will not make minimum requirements for resource definition.

Drill hole 53-3143 was abandoned due to excessive deviation at 137m and did not reach the targeted depth (441m).

Contacts:
Kirkland Lake Gold Ltd.
Anthony Makuch
President, Chief Executive Officer & Director
+1 416-840-7884
tmakuch@klgold.com

Kirkland Lake Gold Ltd.
Mark Utting
Vice-President, Investor Relations
+1 416-840-7884
mutting@klgold.com
www.klgold.com

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