Group Annual Technical Report MLN's 833, 856, 1109, ML's 27999, 31122 and MA's 398 - 402 Union Reefs Project GR192 16 August 2017 to 15 August 2018

Abstract

The Union Reefs Group of mineral leases consists of ten tenements: MA 398, MA 399, MA 400, MA 401, MA 402, MLN 833, MLN 856, MLN 1109, ML 27999 and ML 31122. The leases are located approximately 170 km's southeast of Darwin, along the Stuart Highway, and 12 km north of the Pine Creek Township (Figure 1-1). Kirkland Lake Gold Inc. acquired the leases on November 6, 2009, after purchasing the liquidated assets held by GBS Gold Australia Pty Ltd. The group of tenements also includes the site of the Gravity and Carbon-in-leach plant. The group of tenements are situated within the Pine Creek Orogen (PCO), a sequence of tightly folded rocks of Lower Proterozoic age which extends from Darwin in the north to Katherine in the south. It varies in thickness, from 10 km in some areas to 14 km in others, for a total area of 66,000 km2. The area consists of rocks from the Burrell Creek and Mount Bonnie Formations, the known hosts of gold mineralisation in the district. During the reporting period the Kirkland Lake Gold ceased mining and production, and increased their exploration activity at the Union Reefs and Cosmo underground project areas. A total of 20,353.4m were drilled at Union Reefs during the reporting period, with 16,303.4m being diamond and 4050m meters being RC. This report shall detail the exploration activity undertaken over the Union Reefs project area during the reporting period.