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Taylor Mine

The Taylor Mine is the Company’s newest gold mine with significant exploration potential

Quick Facts

Holt Shaft

Location Matheson, ON
Mine type Underground, decline access
2017 Production Guidance 55,000 – 60,000 ounces of gold
Deposit type Orogenic greenstone hosted gold (Lode Gold deposit)
Process Ore is processed at Holt Mill
End product Gold doré
Commenced Operation Q4 2015
Resources & Reserves

Taylor Mine Overview

The Taylor Mine was commissioned in Q4 of 2015 and was originally developed by St Andrew Goldfields Ltd. Prior to the St Andrew Goldfields Ltd. acquisition, the Taylor property area had been explored by Hollinger and by a joint venture between Labrador Mining and Exploration Company Ltd. (successor to Hollinger) and later by Esso Minerals Canada (Esso Minerals). The property included two near surface gold deposits, the Shoot Deposit and the Shaft Deposit and the deeper West Porphyry Deposit. A 6,000-tonne bulk sample from development in the Shaft Deposit at the Taylor Project was processed at the Stock mill in September 1991. Gold recovery ranged from 89% to 96% for material grading on average 2.2 g/t Au. Development activities re-commenced in 2010 and included two bulk samples. Kirkland Lake Gold Inc. completed the acquisition of St Andrew Goldfields Ltd. in January of 2016, which included the Holt Mine Complex, comprising of the Taylor, Holt and Holloway mines and in a milling facility. The Taylor Mine is the Company's newest gold mine with significant exploration potential. It is a high-grade cornerstone asset for the Company. The mine is located approximately 70 km west of the Holt Mill and ore is trucked daily for processing and refining.

Operating Data

Empty 20162 2015(1)
Gold produced (oz) 42,639 15,964
Ore processed (tonnes) 199,231 69,084
Gold grade (g/t) 6.90 7.55
Recovery (%) 96.5 95.1

(1) - 2015 Q4 Results are from the previous owner of the Mine, St Andrew Goldfields. Kirkland Lake Gold completed the acquisition of St Andrew Goldfields in January of 2016
(2) - Represents operating data for the entire 12-month period ended December 31, 2016, including the period of January 1, 2016 to January 25, 2016 prior to the acquisition of St Andrew Goldfields Ltd. by KLG on January 26, 2016

Exploration

Since the Taylor mine commenced operation in Q4 2015, the focus has been on development of the mine infrastructure (underground access, power, dewatering). Looking to 2017, a greater emphasis on exploration drilling and resource development at the Taylor Mine will benefit the operation.

The Taylor Mine has identified three major mineralized deposits along the Porcupine Destor Fault Zone (“PDF”) which include: (i) the West Porphyry Deposit (the “WPZ”’), which contains the majority of the Mineral Resource and Mineral Reserve estimates in the middle of the property and where active mining currently takes place; (ii) the Shoot Deposit located to the west of the property; and (iii) the Shaft Deposit located on the eastern side. Exploration potential associated with each of these deposits is believed to be excellent as drilling indicates the mineralized zones remain open along strike and at depth.

Mining & Processing Method

Mining at the Taylor Mine is currently focused on extracting ore from the 1004 Zone, employing a mix of Long Hole Stoping (60%) and cut and fill (40%) methods. Ore is hauled to surface by a fleet of 45 tonne trucks, averaging a production rate of approximately 600 tpd. Ore from the Taylor Mine is processed at the Holt Mill.

The Holt Mill is one of the best gold mills in the region with a capacity of 3,000 tpd, of which approximately 1,300 tpd are supplied from Holt Mine and a little under 600 tpd from the Taylor Mine, representing a 60% utilization rate.

The Holt Mill was constructed in 1988, originally designed for a throughput of 1,360 tpd. Expansions in 1988 and 2001 increased the throughput to 2,500 tpd and 3,000 tpd respectively.

Surface ore storage totals 4,900 tonnes in three silos. There is a grinding circuit, two cyclone cluster circuits, a thickener, and a Carbon-in-Leach (CIL) circuit within the plant facilities.

Precious metal stripping is performed in batch. Carbon is transferred to an adsorption column where a Zadra process is utilized as the gold elution method. Barren solution is circulated through two shell and tube heat exchangers and a 360 kW electric inline heater. The resulting pregnant solution is pumped from the solution tank to an electrowinning cell. The gold precipitate is further refined using a 125 kW inductotherm furnace.

Geology & Mineralization

The Taylor Mine is located along the Porcupine-Destor Fault (PDF), a regional structural feature associated with gold mineralization striking roughly east-west and dips to the south at 40 to 60°.

The geological setting at Taylor can be generalized from south to north consisting of mafic volcanic rocks, which are relatively undeformed and unaltered; ultramafic and mafic volcanic rocks, which vary from weakly to strongly deformed, altered and contain felsic to intermediate porphyritic intrusions of varying shapes and sizes; and then metasedimentary rocks, which are interpreted to represent the footwall of the PDF.

Three (3) mineralized deposits have been identified at the Taylor Mine, which extend over a 2 km strike length along the south side (hanging wall) of the PDF. From east to west these are; the Shaft Deposit, which consists of gold mineralization associated with felsic intrusive rocks; the West Porphyry Deposit (WPZ), a system of en-echelon quartz hosted zones, with the gold mineralization associated with felsic intrusive and altered mafic-ultramafic rocks (Green Quartz Carbonate); and the Shoot Deposit, with gold mineralization hosted by argillaceous metasedimentary rocks within a package of green quartz carbonate. Gold commonly occurs as relatively coarse-sized free gold in quartz, but also occurs as fine particles, which may be intimately associated with sulphides (particularly pyrite and locally, arsenopyrite) both in quartz-carbonate veins and breccias or in surrounding altered host rocks.