Mr. Mark Utting of Kirkland Lake reports

KIRKLAND LAKE GOLD FILES EARLY WARNING REPORT

As a result of the completion of the plan of arrangement involving Bonterra Resources Inc. and Metanor Resources Inc., and pursuant to which, among other things, Bonterra acquired all of the issued and outstanding common shares of Metanor, Kirkland Lake Gold Ltd. now holds in aggregate 37,540,290 common shares of Bonterra and 6,136,072 share purchase warrants exercisable to acquire an additional 9,841,646 Bonterra shares. This represents a 9.44-per-cent interest in Bonterra on an undiluted basis and an 11.63-per-cent interest on a partially diluted basis, assuming the exercise of the warrants held by the company.

Prior to the completion of the arrangement, Kirkland Lake Gold held: (i) 17,857,000 Bonterra shares, representing 7.63 per cent of Bonterra on a non-diluted basis; and (ii) 12,272,143 Metanor shares and 6,136,072 warrants, representing 12.05 per cent of Metanor on a non-diluted basis and 17.16 per cent of Metanor on a partially diluted basis, assuming the exercise of the warrants.

Pursuant to the arrangement, Kirkland Lake Gold received 1.6039 Bonterra shares in exchange for each Metanor share held by the company (19,683,290 Bonterra shares in the aggregate) and each warrant held by the company has been adjusted pursuant to the terms of the arrangement and is now exercisable to acquire 1.6039 Bonterra shares (9,841,646 Bonterra shares in the aggregate). Kirkland Lake Gold may acquire additional securities of Bonterra either on the open market or through private acquisitions or sell the securities either on the open market or through private dispositions in the future depending on market conditions, reformulation of plans and/or other relevant factors.

This press release is being issued pursuant to National Instrument 62-103 -- The Early Warning System and Related Take-Over Bid and Insider Reporting Issues, which also requires a report to be filed with the regulatory authorities in each jurisdiction in which the issuer is a reporting issuer containing information with respect to the foregoing matters. A copy of the early warning report will be filed on the Bonterra's profile on SEDAR and may also be obtained by contacting the company at 416-840-7884 or by e-mail at info@klgold.com.

About Kirkland Lake Gold Ltd.

Kirkland Lake Gold is a mid-tier gold producer that in 2018 is targeting over 635,000 ounces of gold production 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.

We seek Safe Harbor.