SERVICES TO THE MINING INDUSTRY

Around the world Under the earth Above & beyond

Golder Associates is a premier global group of consulting companies specialising in ground engineering and environmental services. By servicing client needs and building strong client relationships, our people have made Golder one the most trusted sources of professional services in the world. We have worked hard to earn our reputation, building on the quality of our professionals and the success of our clients. In Golder Associates Africa, our major strength lies in combining our collective local and regional knowledge and experience with the worldwide expertise of Golder Associates. From mine inception through to closure, Golder delivers a comprehensive range of specialist technical services to the mining industry.

Global issues

local solutions

RESOURCE AND RESERVE ESTIMATION

Golder Associates has a proven track record of developing realistic approaches that add value and form the basis for mining operations with attainable production targets. Resource and reserve estimation services include: • Data validation • Geological modelling • Grade estimation • Risk assessment • Geostatistical modelling • Compliance and resource auditing • Financial evaluation and modelling.

MINING ENGINEERING

• Operating and capital cost

The Golder Associates Mining Team

estimation

• Optimised production scheduling.

provides a complete range of mining engineering services for feasibility

ROCK ENGINEERING

studies, optimisation of existing quarries, open pit and underground

Golder Associates has been providing

operations. Services offered include:

comprehensive services in rock

• Open pit optimisation studies • Open pit design and operations

layouts

• Selection of mining method • Equipment selection and

optimisation

• Mining method assessment and

scenario modelling

• Detailed mine layout and design

mechanics and geotechnical design to the mining industry for over 30 years. Services include: MINE GEOTECHNICS • Geotechnical data collection:

mapping, drilling, logging, sampling



and testing

• Rock mass characterisation and

PROJECT DATA ASSURANCE

• Dewatering • Groundwater pollution studies

excavation characteristics We assist our clients to maximise the



(definition, remediation and

value of resource drilling by providing



control)

quality assurance and control from

• Groundwater monitoring

the commencement of the program.

• Contract documentation drilling

We also use our extensive hands-



on experience in resource drilling,

• Design of boreholes for portable

• Underground mine design

assaying, quality control and database



water supply, dewatering,

• Stoping sequence and method

management to design and manage



scavenging systems, exploration,



cost effective geological databases for



aquifer testing, monitoring,

our clients.



artificial recharge

GROUNDWATER MANAGEMENT

• Groundwater assessment for mine

• Stress measurement and evaluation

of seismic behaviour

• Blast monitoring and design. UNDERGROUND MINING

evaluation

• Stability analysis for stopes, pillars,

drives and roadways

• Ground support and reinforcement • Subsidence prediction and control • Block caving studies • Estimation and control of dilution. OPEN PIT MINING • Structural assessment, geotechnical

data collection and analysis

• Slope stability analysis and failure

prediction

• Open pit wall design and stabili-

sation measures

• Slope stability monitoring • Pit rehabilitation.

MINING GEOLOGY AND GRADE CONTROL Golder Associates has a worldwide reputation for specialist expertise and competence in the field of grade control and mining geology. Mining geology and grade control services provided include: • Geological mapping • Cut-off grade determination • Grade control sampling • Definition of ore boundaries for

mining

• Estimation of ore and stockpile

grades

• Optimisation of mineable ore

blocks and sampling patterns

• Optimisation of resource and

reserve recovery

• Reconciliation between ore

reserves, grade control and



production.

Golder Associates is dedicated to the provision of unbiased, scientifically sound and cost effective professional advice in all aspects of hydrogeological exploration, groundwater resources assessment and aquifer development,

and controlled test pumping

• Wellfield design

planning.

ACID MINE DRAINAGE ASSESSMENT AND MANAGMENT Golder Associates has extensive expertise in the handling, conveyance and treatment of mine waters. Projects have been undertaken for

management and protection, as well

the gold, coal, copper mines plus

as pit and mine dewatering.

precious metals mining industries.

Our specialist Groundwater Manage-

• Evaluation of sulphate removal

ment services include:



processes, including variations of



reverse osmosis, ion exchange and

• Groundwater resource evaluation



electrodialysis

• Hydrogeophysical surveying

• Passive mine water treatment

• Hydrogeological mapping



systems

• Design and project management

of mine water neutralisation and



metals removal plant

• Plant audit and optimisation. Golder has also developed a Generic Mine Water Model for opencast mines which allows for the simulation of water through a selection of mine elements. These elements can then be “built” up to reflect the specific mine to be analysed.

ENVIRONMENTAL AND SOCIAL We offer a comprehensive range of environmental services from conceptual design stage, impact assessment and regulatory approvals, through to the operational phases of a project. Our specialist Environmental and Social Services include:

• Environmental monitoring

• Site selection

• Environmental reporting

• Tailings dam layout and basin

• Environmental and social impact

• Fauna and flora baseline





• Waste rock dump design and



assessments

• Community consultation and

facilitation

• Stakeholder engagement • Resettlement action planning • Advice on regulatory compliance • Environmental management

systems

• Environmental audits and

benchmarking

assessments

design

• Vegetation management plans



• Advice on incorporating

• Integrated waste management





sustainability principles

stability analysis plans

• Development of sustainability

• Competitive assessments and



indicators at site, project or



company level

• Tailings remining methodology,



optimisation

• Policy formulation.



MINE WASTE MANAGEMENT

management • Risk management plans • Surveillance and auditing.

TAILINGS AND WASTE Golder Associates offers a complete range of tailings and mine waste management services to the mining industry, a comnplex suite of services involving the disciplines of geotechnical and civil engineering, geology, hydrogeology, hydrology and environmental sciences.

planning, commissioning and

BACKFILL Golder Associates has over 20 years of experience with the study and design of all types of backfill systems, including rock, hydraulic slurry and paste. Golder Associates has the expertise to fully assess backfill systems through evaluations of the mining method, material

Mine Waste Management services

specific tests to design the backfill

include:

mix, the backfill plant and the underground distribution system. We

• Tailings characterisation and

also assist in implementation



of backfill systems to ensure a

evaluation

• Disposal system evaluation

successful backfill program.

SURFACE WATER MANAGEMENT Our goal is to provide services which permit low cost operation, compliance with environmental requirements and successful closure and rehabilitation. We provide a comprehensive management service essential for the design, assessment, operation and rehabilitation of mine waste disposal facilities, for rock dumps, tailings dams, co-disposal facilities and open pit or underground water management.

Specialist services include: • Mine facility water balances • Catchment management • Mine water system design • River modelling and impact analysis • Water quality sampling • Flow, floodline and hydrogeological

modelling

• Integrated mine water management.

CLOSURE AND REHABILITATION PLANNING Golder Associates Africa offers a comprehensive rehabilitation and closure planning service which includes regulatory compliance assessment, public consultation, setting of closure and final land use objectives, impact assessment, mitigation plan development, design and implementation

• • • • • • •

Infrastructure demolition Surface rehabilitation Shaft and pit closure Water management Waste site rehabilitation Hazardous waste management Remediation of soils and groundwater.

SETTING CLOSURE OBJECTIVES • • • • • •

Final land use planning Public consultation Rehabilitation planning Compliance assessment Performance assessment Financial provisions.

POST CLOSURE CARE AND MAINTENANCE • • • • •

Contracts and specifications Monitoring and surveillance Compliance assessment Auditing Closure certification.

CLOSURE PLANNING • • • • •

Closure plans Closure costing Landscaping Regulatory consultation Performance and compliance monitoring.

Engineering Earth´s Development. Preserving Earth´s Integrity

Global Issues At GOLDER ASSOCIATES we strive to be the most respected global company specialising in ground engineering and environmental services. Employee owned since our formation in 1960, we have created a unique culture with pride in ownership, resulting in long-term organisational stability. Golder professionals take the time to build an understanding of client needs and of the specific environments in which they operate. We continue to expand our technical capabilities and have experienced steady growth with employees who operate from offices

Local Solutions WORLD WIDE ASIA Tel 852 2562 3658 AUSTRALASIA Tel 617 3721 5400 CANADA Tel 1 403 299 5600 EUROPE Tel 44 1628 586 213 SOUTH AMERICA Tel 55 21 3095 9500 UNITED STATES Tel 1 770 469 1893

located throughout Africa, Asia, Australasia, Europe, North America and South

BOTSWANA GABORONE Tel 267 318 8595 GHANA ACCRA Tel 233 21 779 124 MOZAMBIQUE MAPUTO Tel 258 21 301 292 SOUTH AFRICA CAPE TOWN Tel 27 0 21 658 6360 DURBAN Tel 27 0 31 717 2790 FLORIDA Tel 27 0 11 672 0666 JOHANNESBURG Tel 27 0 11 254 4800

America.

PRETORIA Tel 27 0 12 366 0100 RANDBURG Tel 27 0 11 789 3742 RUSTENBURG Tel 27 0 14 597 0442 [email protected]

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