PROVIDING SKILLS & ADVICE IN THE MINING INDUSTRY

Purpose StatementTo be recognized as:

Trustworthy - Committed - Determined

to

Transform Mining

by

Partnering with the Clients

in

Creating Innovative Solutions

to

Solve Challenges

Mission StatementLeadership in hydropower

through people

committed to serving

customers’ needs

with

innovative

products and solutions

We Believe StatementHPE is about People, Ideas and Technology

We’re Passionate about our Clients and what we do

We’re Transforming the Mining Industry

We work with a “do-or-die” Attitude and total Commitment

We hire for Attitude and train for Skill

Our Competitive Advantage is our Professional Behaviour and Work Ethic

We gather information about our Clients to be “value add” Supply Partners

We see Failure as an inevitable step in developing Successful Solutions

We value participation, but look to our Specialists for Success

Speed of Execution is our differentiator

We do things in Hours or Days, not Weeks and Months

We Act on ideas immediately – procrastination kills innovation

We Manage our risks by Planning and Evaluating our investments

We know our Core Competencies and our Business

We can explain what we do in 60 seconds

1

Who We Are HPE was established in 1985 and has been a pioneer of innovative, hydro-powered mining products and services.

We are proudly South African and head-quartered in Kya Sand, Johannesburg.

Our expertise in high pressure water hydraulics is unrivalled and has helped set new benchmarks in our mining industry.

Our 500 staff members have honed their skills in the narrow tabular ore bodies of the South African Gold and Platinum Mines.

HPE Expertise The latest addition to our growing portfolio

This service offering draws on our in-house specialists and external associates, to deliver fast and expert advice to mining houses and consulting companies in our area of expertise.

Our team comprises of Mining and Engineering Professionals of many years standing with real world “hands-on” experience.

2

Services Offered

High Pressure Water Reticulation

• Designofpipinginvalvestationsandonde-wateringsystems(e.g.specification,wall thickness calculations and pipe support structures)

• Design of high pressure vertical and decline columns

• Pressure drop optimization of mine-wide, high pressure reticulation systems

• Review of multi-column systems and design of column protection

• Transientflowandpressuresurgeanalysis

• Pipeline failure investigations

• Reviewof‘fit-for-service’ofdeterioratedhighpressurepipingsystems

• Extensionandoptimizationofhydropowerandbackfillreticulationsystems

• Waterquality,pressureandflowmanagement

• Pump control valve station design

• Pressure regulating valve station design

• Turbine protection (valves and by-pass dissipators)

Energy Efficient

• Complete analysis and design of 3 Chamber Pump Systems (3CPS) for energy recovery

• Pump-As-Turbine (PAT) energy recovery

• Energyefficiencystudies,e.g.hydropowerversuscompressedair

• Savinginitiativesrelatedtowaterconsumptioninamineincludingpressureprofilecontrol

Specialized Expertise

• Optimizing,schedulingandcosting(CAPEXandOPEX)ofhydrominingsolutions(e.g.ore-pass,raiseandflatend development and hydro stoping)

• Assisting consultants with concept, scoping and feasibility studies

3

Projects

Industry Project

Au 3CPS design and supply including columns, valves, pumps and control systems

Pt Declinecolumndesignandsystempressuremodellingforbothsteadystateandtransientflows

Au Pressure drop optimization of mine-wide, high pressure reticulation systems

Au and PtCapitalandoperatingcostanalysisofhydrostoping,ore-passdevelopmentandflatenddevelopmentsystems

Au Reviewof‘fit-for-service’ofdeterioratedhighpressurepipingsystems

Pt Designandspecificationofverticaldrinkingwatercolumnandpressurereducingsystems

Au Pre-feasibility study for Pump-As-Turbine (PAT) energy recovery systems

Au Review of safety and protection of multiple pump columns

Pt Extensionandoptimizationofhydropowerandbackfillreticulationsystems

Our Value Proposition • Flexible + Adaptive: we thrive on change

• Fast+Efficient: weprideourselvesonbeingresponsive

• Affordable + Value for Money: we are lean and precise

• Hands-on + Practical: we understand how to remove the “hassle factor” and get results

• Knowledgeable + Experienced: we understand our mining industry and culture

4

Our Team Comprises of an exceptional mix of young graduate professionals and experienced senior professionals:

• Mining professionals with decades of experience at mine General Manager and Engineering Manager level

• Professional mechanical, materials and metallurgical engineers at BSc, MSc and PhD level

• Projectspecific,wearealsoabletodrawonawidepoolofexternalprofessional associates.

Support Tools HPE Expertise has at its disposal, state of the art software and analytical tools:

• Computer Aided Design (CAD - SolidWorks)

• Computational Fluid Dynamics (CFD)

• Finite Element Analysis (FEA)

• Transientandsteady-statefluidnetworkanalysis(AFT-Impulse)

• Mechanical-hydraulic systems analysis (HOPSAN)

• Pipestressanddeflectionanalysis(CAESAR)

• High-speed (100 kHz) data acquisition and processing (eDAQ + nCode GlyphWorks)

Tel: +27 11 462 1903

Fax: +27 11 462 5098

E-mail: sales@hpesa.com

Website: www.hpesa.com

19 Precision Street, Kya Sand, Randburg

PO Box 1148 Honeydew 2040

Republic of South Africa