The TMAC Resources Inc.

Hope Bay Project

An Innovative Approach

Gerhard Bezuidenhout

Gekko’s mission

Global Footprint

Global & Gold/Silver Focused - increasing coal/polymetallic focus

• Total 150 staff

• Team of 45 in Metallurgy & Process Engineering

• Offices: Ballarat, Jo-Burg, Vancouver, Perth, Moscow

• Agents: South America, Ghana

• 600 units installed in over 40 countries worldwide

How we make a difference

• Pre-concentration flowsheets

• New technologies, focus on liberation Low Energy

• Modular and miniaturised design

• Underground processing Small Footprint

• Design and construct business model, cut waste

• Lower capex, opex, faster time to install

Higher and faster returns

• CEEC, Austmine, METS Ignited, Innovation Australia

• Graduate program, Grinning Gekko Supplier Award

Industry change agent

• Focus on vulnerable young families, pre-school

• Cancer research

Community Fund

Intelligent Unique Technology

• InLine Pressure Jig

• InLine Leach Reactor

• Gekko Mag-Screen

• InLine Spinner

• G-Rex Resin Column

• Gekko Electrowinning

• Gekko Python

Python for Underground

The TMAC Resources Inc - Hope Bay

Project - An Innovative Approach

Background

• TMAC is a mineral exploration and development company developing economically and environmentally sustainable mining projects in the Hope Bay Greenstone Belt in Nunavut, Canada.

• The site is situated in the country’s far north, within the Arctic Circle and has very specific requirements.

• TMAC needed a robust plant that was easy to transport and install with a low height profile and low energy usage.

• The Python Environomic Processing Plant is Gekko’s flagship mineral processing solution. As an innovative plant specifically designed for highly efficient gold and sulphur liberation in remote environments, the Python was the perfect choice for the Hope Bay project.

• Over the life of the Hope Bay mine, TMAC can expect to achieve 91% recovery rate. The modular plant has been designed to initially treat 1,000 tonnes of mill feed per day by the end of Stage 1 and reach its maximum capacity of 2,000 tonnes per day in early 2018.

• The expected head grades at 11.4 g/t Au

TMAC Resources – Hope Bay

Project Concentrator

TMAC Resources – Hope Bay

Project Concentrator

Gravity (IPJ)

VSIs

Secondary

Crushers Reclaim

Primary

Crusher

Ball Mills

Flotation MCCs

Tailings

Thickener

Reagents

Batch ILR

Continuous ILRs

Detox

Gold Room

(incl G-Rex)

Regrind

Mills

Hope Bay – Process Flowsheet

Comminution and Gravity

APRON FEEDERCYCLONEU/F

CLEANERIPJ

CYCLONEO/F

SECONDARY JAW CRUSHER

GRAVITYCONCENTRATE

CLEANER IPJ TAILS

TERTIARY SCREEN UNDERSIZE

SECONDARYSCREEN

GRIZZLY UNDERSIZE

JAW PRODUCT SECONDARY SCREEN UNDERSIZE

VSI PRODUCT

VSI FEED

ORE

ROUGHERIPJ

PRIMARY MILL

IPJ CONCENTRATE

IPJ TAILS

CYCLONE

IPJ FEED

FLOTATION COND TANK

TERTIARYSCREEN

PYTHON 1 PRIMARY JAW CRUSHER

VSI CRUSHER

Hope Bay – Process Flowsheet PYTHON PROCESSING PLANT

CLEANER IPJ TAILS

TERTIARY SCREEN UNDERSIZE

SECONDARYSCREEN

GRIZZLY UNDERSIZE

JAW SECONDARY SCREEN UNDERSIZE

VSI PRODUCT

TERTIARYVSI CRUSHER

APRON FEEDER

APRON FEEDER

PYTHON 2 FEED

ROUGHER

CLEANER

CYCLONEO/F

CYCLONEU/F

GRAVITYCONCENTRATE

CYCLONEU/F

CLEANERIPJ

CYCLONEO/F

SECONDARY JAW CRUSHER

SECONDARY JAW CRUSHER

GRAVITYCONCENTRATE

CLEANER IPJ TAILS

TERTIARY SCREEN UNDERSIZE

SECONDARYSCREEN

GRIZZLY UNDERSIZE

JAW PRODUCT SECONDARY SCREEN UNDERSIZE

VSI PRODUCT

VSI FEED

ORE

ROUGHERIPJ

PRIMARY MILL

CONCENTRATE BELT FILTER

CONCENTRATE STOCKPILE

FLOTATION IPJ CONCENTRATE

IPJ TAILS

FLOTATION CONCENTRATE

FLOTATION TAILS

CYCLONE

IPJ FEED

FLOTATION COND TANK

TERTIARYSCREEN

FLOTATION TAILS THICKENER

CONCENTRATE TREATMENT

PRIMARY MILL

FLOTATIONIPJ CONCENTRATE

FLOTATION CONCENTRATE

FLOTATION TAILS

CYCLONE

IPJ FEED

FLOTATION COND TANK

PYTHON 1 PRIMARY JAW CRUSHER

TAILINGS IMPOUNDMENT AREA

TAILINGS

STAGE TWO - 2017

Collector Promoter

Frother

Flocculant

CONCENTRATE THICKENER

IPJ TAILS

VSI CRUSHER

Hope Bay – Process Flowsheet

Three Stage Crushing Circuit

A front end loader recovers the ore from the ROM pad and tips onto the Primary Grizzly

to scalp out +600 mm materials.

The primary jaw crusher product is fed to

the secondary screen, screening at 50 mm,

the secondary crusher crushes oversize to

a P95 of 75 mm

The minus 600 mm material is fed to

the primary jaw crusher which

crushes the rock to a P95 of 125 mm.

Tertiary (VSI) Crusher

• The Vertical Shaft Impactor (VSI)

operates in closed circuit with

screens

• Energy benefits of circuit established

with fine crushing

• Consistency of modular approach

• The VSIs models are Remco

VS300RR

Vertical Shaft Impactor (VSI)

• Feed accelerated, leaves rotor at 70 m/s.

• The VSI handles large variation in moisture content, ideally suited wet

screened products.

• This is a very versatile comminution technology.

Continuous Gravity Recovery

• The product of the VSI and

screening then fed to the

InLine Pressure Jigs (IPJ)

• This is for gravity

concentration of free gold and

sulphide recovery

• This a “Continuous” gravity

recovery, not batch.

• Treatment of coarse particles

up to~20mm

Castlemaine Goldfields Plant – Gravity Circuit

Design 800k tpa – 94% gravity recovery

Primary Grinding Mill

• The primary ball mill prepares the IPJ tails for the downstream flotation

with a target P80 of 150 um

Flotation Cells

• The tailings from gravity separation are fed to the flotation circuit.

• Following gravity separation flotation is the most common industrial

method by which valuable minerals are separated from the waste

rock targeting finer minerals not recovered by gravity.

• The slurry is agitated and with the use of air and reagents to the

valuable minerals are recovered.

InLine Leach Preparation

• Due to the coarseness of the ore feeding gravity and flotation the

flotation concentrate is usually reground finer to improve the leach

kinetics and recovery

ISP – InLine Spinner (BCC)

• Often incorporated as a second gravity step for mining operations, the ISP

further concentrates and upgrades material from the IPJ or other jigs.

• The ISP is extremely effective for recovering coarse free gold from concentrates

and for alluvial operations.

• The ISP has the major

advantage of very little water

use, which is ideal for use in

small milling and cyanide

systems.

ILR – Smart, Simple, Highly Effective

• Intensive Cyanidation Reactor for

Au & Ag Concentrates

• 1996 – ILR Continuous Prototype

Launched (Pioneered commercial

IC)

• 2016 – Over 140 Units, 27

countries

• Technical & Market Leading

Technology – 20 years

Theory of Operation

Removal of diffusion layer/abrasion – Faster access for CN – Faster Kinetics

Electrowinning Cells

The ILR5000CA – Continuous ILR

The G-Rex 13000 Upflow

Resin Column

The G-Rex 13000 Upflow

Resin Column

5,000 km

8,000 km

10,000 km

Hope Bay Sealift Routes

Gekko Technical Partnerships

• Technical Partnership

• Review opportunities across global

operations

• Reduce energy consumption

• Long term opportunity underground

• Replace surface mills

Lean Manufacturing And Office

Status – March 2017

• Equipment delivery: Arrived August 25th 2016, in more than 200 containers;

unloaded at end of August

• Construction slightly delayed due to building and foundation delays –

nothing to do with Gekko or TMAC.

- Construction completed end December 2016

- Commissioning started beginning of January 2017

- 18,000 hours total

- First Gold pour February 9th 2017

- Everything is on budget

Status – March 2017

Project fly-through

https://www.youtube.com/watch?v=H7mSbfvoA4k

Status – March 2017

Status – March 2017

Project Update

https://www.youtube.com/watch?v=09_h8slDnJQ

“it’s all about people”

Gekko Team 2016