Infrastructure for theMining Industry

GHD has an integrated approach to delivering infrastructure for mining projects. From mine concept to mine closure, the GHD mining and infrastructure teams work closely with you to provide an extensive range of services.

Through our 6,000 people in a network of offices in 15 countries, GHD has a range of technical specialists to support every stage of infrastructure for your mining project’s life cycle. We understand both the business and technical issues involved in delivering optimum project outcomes, and have the capability and commitment to assist you to successfully and profitably develop the infrastructure for your mining prospect, operation or expansion plans.

For example, our approach to infrastructure development considers the integration of the geological and mine planning, with the environmental and geotechnical, all with an appreciation of safety and capital and operational costs.

Our projects span the globe – Asia, Australia, South America, China, Middle East and Africa – addressing diverse regional factors, and delivering significant benefits to our clients through improved mine development and costing strategies. Infrastructure areas that GHD

can address are broadly listed and examples for each area are provided:

Mining development and feasibility studies;

Mine site facilities, such as materials handling ;

Environmental studies and management plans;

Telecommunications;

Power supply and reticulation;

Airport, Port/shipping, Roads and rail;

Mining town development;

Water supplies, dams and treatment plants;

Tailings dam

Geotechnical engineering;

Ports and shipping facilities;

Mine fuel supply;

Mine security

MINE DEVELOPMENT AND FEASIBILITY STUDIES

Macarthur Overburden Removal Feasibility Study

Macarthur Coal Limited (30/10/06 – current)

GHD carried out additional investigations into an alternative conveying configuration, prior to embarking on a Feasibility Study. The study addressed one configuration only and involved necessary geo-tech investigation, preliminary design and construction analysis to achieve a ±10% Capital Cost Estimate.

Tampakan Infrastructure The Tampakan copper/gold mining project in Mindanao, the Philippines, is a proposed 30Mtpa to 45Mtpa mine, producing 700,000 to 900,000 tpa of copper concentrate. GHD were commissioned in 2006 by Sagittarius Mines, the local subsidiary of Indophil Resources NL, to undertake mining infrastructure pre-feasibility and masterplanning services. Within the scope was to review a variety of options, develop preliminary layouts and to prepare cost estimates. Specifically, the areas of focus were: Cargo & Marine Facility Roads & Bridges Power Generation & Transmission Copper Concentrate Slurry Pipeline Fuel Supply Base Camp/Township

BHPB Ni West Mt Keith Mine Material Handling (17/11/06 – current)

Discounted Cash Flow with Range Analysis and Risk Assessment from CAPEX and OPEX determination of the Mt Keith operations. were performed to determine different material transport options feasibility and profitability over the mine life.

Simberi Gold Feasibility Study

(1/9/05 – 4/1/06)

This job will pull together the various independent work undertaken by Allied Gold previously and develop a Feasibility Study on material transportation options for Funding Review.

Isaac River Mine Development Concept Study

The study of the infrastructure requirements to support a 6 million tonne coal mine in the Central Queensland area. Discounted Cash Flow analysis, Range analysis and risk assessment were performed from CAPEX and OPEX assessment.

BHPB Ni West Mt Keith Mine Material Handling

(17/11/06 – current)

To carry out a Mine Materials Handling Study for BHB Billiton Nickel West Mount Keith Mine. Alternate methods of material removal from the pit have been assessed including aerial conveyor systems directly out of the pit

Belvedere Coal Logistics Study

(18/10/06 – 12/2/07)

This job involves the determination of Coal Loading cost on site, Rail freight costs, Port loading charges and a analysis of the approval steps along the way. This study will look at two alternative production tonnages 8mtpa and 12 mtpa and will consider the potential impact on rail freight and port charges if the Wandoan Rail Link comes to fruition.

MINE DEVELOPMENT AND FEASIBILITY STUDIES

Coal Development Feasibility Assessment,

Bangladesh (2003 – current)

GHD provided technical support in the lead up to the Feasibility Study for the development of an open pit coal mine and power station development in north west Bangladesh. This included coal resource, hydrogeology and geotechnical issues, mining methods, power station systems, social, environmental, economic and land data management assistance. GHD prepared of the Feasibility study scope and the Competent Persons Report for the project listing on London market. GHD supervised exploration drilling to improve the coal basin definition. GHD is currently initiating the full Feasibility Study works program to be undertaken in 2004-05.

Loy Yang Power Mine Development (1992 – ongoing)

GHD and its staff have provided a wide range of mining and related services to Loy Yang on a continuous basis since planning for this project commenced in the early 1970’s. Services performed include whole of life and medium term mine planning, mine plant reliability modelling, mine operational support, geotechnical engineering, hydrogeology, environmental management, tailings management and dam surveillance for this large 30 Mt/annum mine.

Coal Development Prefeasibilty Assessment

Bangladesh (1999 – 2002)

Preparation of a Concept Study and a Prefeasibility (Phase 1) study of an open pit coal mine and power station development in north west Bangladesh including assessments of coal resource, hydrogeology and geotechnical issues, mining methods, capital and operational costs, infrastructure requirements and costs, power station system interaction and economic assessment. Further geophysical investigations and resource assessment work was then completed to improve the project definition.

Flynn Mine Concept & Prefeasibilty Studies

Victoria (2002 – 2003)

GHD undertook conceptual design for this green field open cut coal mine project at Flynn in Victoria’s Latrobe Valley for Australian Power and Energy Ltd (APEL). Our engagement included exploration, geological modelling and resource evaluation, mine planning, mining methods assessment, hydrogeology, geotechnical engineering and regulatory approvals. We are well placed to assist APEL with detailed engineering for both the mine and processing plant as this project is developed.

Kalimantan Mine Development Assessments

Indonesia (1998)

Development of mine design, mine scheduling, coal quality assessment and coal quality blending to achieve optimum mine development for two planned major operations in Kalimantan.

Mine Safety Training Program

India (1998 – 2002)

This $A3,500,000 project for the Indian Government involves the provision of training in mine safety practices to support the development of improved work practices and systems, legislation and mine safety information systems. It incorporates the training of groups of Indian mine safety inspectors in Australia and coordination work in India.

Geological Resource Assessment

Philippines (1999)

This geological assignment formed part of a BHP Engineering bankable feasibility study for a coal project in northern Luzon. The project required collection and validation of historical geological data on the deposit and provision of specialist advice on the requirements for a resource estimate. The projects field requirements included assessment of geological drilling procedures, supervision of drilling works, core logging and core sampling plus training and supervision of local geological and technical staff.

MINE INFRASTRUCTURE PROJECTS

BMA Crinum Mine – East Crinum Expansion

Design and supervision of new trunk conveyors and a 1.5km ramp conveyor for the Crinum East mining operation.

PT Adaro Coal Transport System GHD has designed a 66km conveyor system for PT Adaro’s mine in Indonesia handling 40 Million tones per annum of coal. The conveyor is to replace a dedicated mine road system which has become a significant community issue.

Goro Nickel Project Haul Road Design

(15/2/06 – 16/11/06)

Design the haul road between the Goro orebody and ROM pad in New Caledonia. Road will cross two ravines and very steep country. Embankments and culverts across ravines of major significance, both hydrologically and geotechnically. GHD to produce preliminary designs for Permitting Authorities by 31 March 2006.

Aurukun Project - Rusal Assistance

- Rusal Australia Pty Ltd

To provide input to Rusal's scoping study for their deliberations on the Aurukun Project. GHD was commissioned to provide input to the mine infrastructure - roads, bridges and airfield - as well as ports information of two potential mine wharfs and three refinery wharf sites. The requirement was for a quick (~2week study) providing a +/-30% estimate

Millennium No.1 Mine Geotechnical Investigations

-Millennium Coal Pty Ltd

GHD were engaged to carry out the geotechnical investigation of the proposed mine infrastructure. This included the GHD designed rail loop, haul road, access road and water storage dams as well as the coal handling facilities designed by others

MINE INFRASTRUCTURE PROJECTS

Isaac River Mine Development Concept Study

Client:- BMA Coal the largest thermal and coking coal exporter in Australia. Mines and located in the Bowen Basin in Central Queensland and the Hunter Valey in New South Wales.

Project- :Isaac River Mine Concept Study. The development of a $500 million open cut coal mine. To be developed by 2010

GHD's Role:-The study of the infrastructure requirements to support a 6million tonne coal mine in the Isaac river mining area

six locations were studied by an extrpolation and subjective logic method. A capital cost estmiate to +40% was included.

A secodary part of the study was the establishment of a future works plan for the PFS.

Phulbari - Infrastructure Feasibility Study

- Asia Energy Plc

Phulbari Infrastructure feasibility study for a major coal min in Bangladesh was completed for Asia Energy. Key issues were transport and potential port facilities.

Bengalla Coal Mine

- Bengalla Mining Company

Bengalla Mine Infrastructure EPCM - Design of Access Roads & O/B

Mineconsult Saddlers Creek Infrastructure

- MIneconsult Pty Ltd

Preparation of Infrastructure concept designs and cost estimates to support the Saddlers Creek feasibility study

MINE SITE FACILITIES

Anvill Hill Mine Development Current

Initial stages for the proposed Anvil Hill mine in the Hunter Valley. Current commission is to provide all infrastructure services to support the approvals process.

Hail Creek Mine – Site Facilities and External Works, Qld

Hail Creek Partners

Covered all works associated with mine site facilities and the open cut mine which had been planned to produce 4.5 Mtpa of coal. Works included heavy equipment and fuelling facilities, high and low voltage power distribution, water supply and wastewater treatment, all roads and drainage including haul roads, administration and amenity buildings, single men’s quarters and airstrip. Study established all engineering requirements, layout, typical sections, reliable quantities and estimates for capital costs.

Bengalla Coal Project ($11M) 1992 - 1998

EPCM Civil Infrastructure. All infrastructure services (road and rail access, services, water management, buildings, fuel) from initial concepts and approvals support to detailed design and construction phase, including project management services to the BMC project manager.

Kidston Gold Project, Qld

Placer

GHD completed extensive investigations, testing, engineering evaluation, design, documentation and supervision of all major principal structures, including buildings, ball mill, and all processing plants. GHD also provided design, documentation and supervision of mine site roadworks and external main road upgrading works; drainage, aerodrome works and miscellaneous site works.

Guinea Alumina Project for Bechtel

Earthworks and civil design for the alumina refinery in Guinea subcontracted to Bechtel. Detailed design of the earthworks for the power station, precipitators and warehouse and workshop area for early site works. Design of the 7000 person construction camp and currently designing the 1500 person permanent camp. Also undertaking port facilities design, airport design and administration building design.

Bunbury/Capel Operations – WA

Westralia Sands

GHD provided consulting and design services to Westralian Sands’ Bunbury/Capel operation for several years, in the disciplines of waste handling, transport and structures. The following projects are typical:

Foundation investigations for processing plant

Investigation of membrane liner systems for effluent disposal ponds

Design and documentation of haul roads to the North Boyanup mine

Design of a bridge over the Elgin drainage channel

Investigation and report on the safe disposal of low-level radioactive waste from residential area at Capel

Intersection designs and traffic studies relating to in-plant traffic and haul routes.

Hail Creek Mine Site Facilities Study

This study established engineering requirements, layout, sections, quantities and cost, establishment and maintenance costs. The engineering study covered all works within the mine site, including heavy equipment and fuelling facilities, and administration/accommodation building, amenity buildings and site men’s quarters.

ENVIRONMENTAL

Aurukun Bauxite Project

Chalco Aluminium

Environmental, Social and Engineering Adviser for the development of the Aurukun Bauxite Resource and associated Alumina Refinery and Red Mud Disposal sites during prefeasibility stage of project. The project includes a planned bauxite mine at Aurukun (south of Weipa, QLD), benefication plant, tailings and water supply dam, conveyor, port, jetty and associated infrastructure. GHD has been working with Chalco and Bechtel as the adviser assisting with the Final Bid and Development Agreement to the State Government, Indigenous Land Use Agreeement negotiations and Environmental Authority and consultation for the Mineral Development Licence. The advice has also included the Alumina Refinery, port, jetty and Residue Storage Areas either at Townsville, Bowen or Gladstone. GHD has been the principal environmental and social adviser and associate engineering adviser to Bechtel from late 2005 to present.

Xstrata Coal NCA Coal Project

Mine Closure Planning

Xstrata Coal Pty Ltd currently operates the Collinsville and Newlands coal mines as a part of the NCA Project, which encompasses the Newlands and Collinsville mines, and Abbot Point, a deepwater export port dedicated solely to these mines.

All Xstrata Coal operations and projects are required to prepare a Life of Mine Document and Plan, as outlined in Xstrata standard XC BDEV_STD 1.01. Mine and closure planning is integrated into Xstrata Coal’s Life of Mine Plan, and this process is outlined in Xstrata standard HSEC STD 3.1. Under this standard, all operations with greater than five years to mine closure are required to prepare a Conceptual Closure, Decommissioning and Rehabilitation Plan.

GHD Brisbane proposes to provide a Conceptual Mine Closure Plan for the Collinsville and Newlands coal mines. It is proposed to undertake this project on a schedule of rates basis.

Ma’aden Aluminium Project (Saudia Arabia):

GHD completed an Environmental Impact Assessment (EIA) to World Bank Standards, including all specialist studies with field work in Saudia Arabia. The project includes a greenfield bauxite mine and associated infrastructure located in northern Saudi Arabia, rail link to an alumina refinery, aluminium smelter, 1800 MW power station, desalination plant and port facility located on the east coast. The field work involved specialist teams from the Brisbane office conducting flora, fauna, soils, air and general obervation of sites within the coastal and offshore environment. Specialist studies were conducted for air, noise, flora and fauna, waste, water (marine, surface and groundwater), social and economic assessments. This project commenced in mid 2003 and was completed by late 2005, however further studies were conducted different discharge scenarios from the desalination plant and port layouts.

ENVIRONMENTAL

Mt Leyshon Site Remediation - Phase 1

Newmont Australia Pty Ltd

GHD Pty Ltd (GHD) was commissioned to provide consulting engineering services to assist Newmont with the remediation and on going surface maintenance of the now closed Mt Leyshon Gold Mine, near Charters Towers, 120km in land from Townsville, North Queensland, Australia..

The site has been rehabilitated throughout the operating life of the mine and in general is performing well. Some small portable offices are the only structures on site located off the southwest corner of the pit.

Current issues on the site relate to areas of rehabilitation that have not worked and areas that have not been rehabilitated.

Priority issues that were addressed first comprised:

PHASE 1 – Urgent for 2004

1. Supergene Dam Area

2. Southern Spine Drain

3. Minor scouring throughout the berm structures

Future issues are:

PHASE 2 – 2005 onwards (not part of this commission):

1. The scats stockpile

2. The raw water dam

3. The Mt Maw extension pond

4. Seepage from the tailings dams

5. On-going erosion repairs at benches and drain outlets

Mt Authur Coal Mine NSW

Westrac Acoustic Attenuation for CAT 789. ($0.75M) 2004

Acoustic modelling, truck solid modelling and acoustic attenuation design, documentation and project management to provide world’s best acoustic attenuation for the CAT 789 haul trucks

AIRPORTS

Mount Tom Price Airport for Rio Tinto

Detailed design for the upgrade of the Mount Tom Price airport for Rio Tinto Iron Ore. The airport is to be designed to be capble of large passenger jets like the Boeing 737.

Design of an Airport for Guinea Alumina.

Subcontract with Bechtel to provide the design of the airport for the Guinea Alumina project in Guinea.

Norfolk Island Airport Pavement Upgrade Works - Administrator of Norfolk Island

Design, documentation and project management for the upgrade of Norfolk Island's Airport pavements.

Griffith Airport Passenger Terminal Upgrade

Provide detailed design and project management services for upgrade of Griffith Airport Terminal.

MKO Airport - Design and Documentation

Mt Keith Airport Upgrade - Design and Tender Documentation

Maryborough Airport Master Plan

Preparation of Master Plan for Maryborough Airport, together with ANEF study and detailed plan (large format / mixed use) of Maryborough airport development precinct.

Oakey Pavement Upgrade Investigation

GHD was engaged by the Department of Defence to undertake an investigation to determine the feasibility and requirements to upgrade the aircraft pavements at Army Aviation Centre Oakey to accommodate C130 operations. The project included a geotechnical investigation to determine the condition, structure and subgrade for the existing pavements, assessment of the existing pavement structures under the proposed aircraft traffic and determination of existing PCN values as well as the requirements to upgrade for the C130 traffic. The feasibility of extending one of the existing runways was also undertaken

CONSTRUCTION/PROJECT MANAGEMENT

CONSTRUCTION/PROJECT MANAGEMENT

GPA Stockpile 17&18 Construction Management

Provision of Superintendent Services for the construction of the Stockpiles 17-18 Development at the RG Tanna Coal Terminal, Gladstone.

Services included construction supervision and contract administration.

Halifax Bay Port Facilities At Halifax Bay, Dallhold Nickel appointed GHD as Project Manager for the construction of a new port facility and materials, handling system to receive 5.0 Mtpa of ore. Works included a 5km long dredged channel, off-shore breakwater, 1.4km trestle, berth and installations for tug (2) and barge (4x3,000 tonne) operation, 2,200 tonnes/hour barge unloader, a 5 km long cable belt overland conveyor and infrastructure. Duties included design, construction management, procurement, expediting, industrial relations, safety programs, commissioning and training of operators.

POWER SUPPLY/ELECTRICAL

Belvedere Power and Accomodation Study

CVRD (current)

Study to assess the capacity of the Moura infrastructure to accommodate the power requirements and 1000 worker camp accommodation requirements for the Belvedere mining project

110MW Cogeneration Plant Mission Energy, WA

BP Kwinana

Preliminary engineering for a cogeneration plant supplying steam and electricity to the BP Refinery with the sale of excess power to SECWA. Fuelled by natural gas and refinery gas, the facility is based on 2x37MW gas turbines, supplementary fired HRSGs and a 40MW extraction steam turbine. Optimisation and detailed costings performed.

Pioneer Cogen Project Design and documentation of a cogeneration plant for Pioneer Sugar Mill.

450MW Combined Cycle Plant, WA

Compact Steel Pty Ltd

Feasibility study of a cogeneration scheme that included the development of a 3 unit 180MW combined cycle plant fuelled by steel mill exhaust gas and natural gas, and an additional 3 x 60MW combined cycle plant fuelled by natural gas for SECWA sales. Combined cycle plant capacity subsequently increased to 450MW. Concept development, technical performance review, cost estimates and financial analysis.

100MW Power Station Port Hedland, WA

BHP Iron Ore

Conceptual design studies, specification, and cost estimates for the 100MW power station at Port Hedland (2x37MW combustion turbines, two HRSGs, and 1 x 35MW steam turbine).

Mt Keith Nickel Project, WA

WMC

Electrical, process control work and finite element analysis for five grinding mills.

Kidston Gold Mine Detailed negotiation with FNQEB regarding route and costs associated with 319km of 132kV transmission line. Detailed preliminary design of 132kV/22kV/6.6kV substation and for the electrical communications and instrumentation systems throughout the mine site, all buildings and processing plants and the town reticulation.

POWER SUPPLY/ELECTRICAL

Peko Mines, Tennant Creek, Northern Territory

Design of 33kV/3.3kV/415/240 volt transmission and reticulation system providing power to four mines in the Tennant Creek area.

ROADS

Macarthur River Mine Haul Road This 110km two lane roadway carries the largest road trains in Australia from the mine to the port in the Gulf of Carpentaria. Extensive sections of the pavement suffered premature distress prior to and immediately after opening. GHD carried out forensic investigations into the causes of the failure including commissioning Main Roads to perform deflectograph testing and triaxial characterisation of material properties. A detailed assessment was made of material properties and their performance under load with GHD designing the remedial works and proposing an ongoing monitoring program.

Yarrabee Mine Coal Haul Road

Mines Administration Pty Ltd

Design, contact documentation and construction supervision of 36km coal haul road, rail loop and coal loading facility, including 1000 tph conveyor and rail loading bin for 300,000 tonnes per annum coal project near Blackwater. Design and project management of a further 5km of roadworks, railway balloon loop and civil works for coal loader.

Goro Nickel Mine

New Caledonia

GHD undertook investigation and design for this nickel mining project, including haul road design, pavement design, structure foundations, water supply and tailings dams, wharf and water management.

Gag Island Nickel Mine

Indonesia

GHD undertook investigations and design for the haul road design, foundation structures, township development, water supply and tailings dams, wharf, water management and an airfield.

MINING TOWN & INFRASTRUCTURE PLANNING

Busselton Compensating Basin CB3 - Design

Detailed design and preparation of tender documents for Compensating Basin CB3 and the upgrade of the Sabina Diversion Drain as part of the Busselton Flood Protection Project. CB3 will comprise a 4km long embankment, with a maximum height of about 6m. The basin will have a storgae capacity of 2GL.

Wenlock Scoping Study

(1/3/07 – current)

Create a scoping study for Cape Alumina Ltd, a wholy-owned subsiduary of Metallica Ltd. The study is for the design and development of a 5Mtpa Bauxite mine at Wenlock, near Weipa on Cape York.

Gag Island

Indonesia

GHD in association with a local consultant undertook a detailed feasibility study for the town and town infrastructure for a mine, beneficiation plant and port facilities project involving 950 houses, sewerage, water supply, roads, power, communication facilities, airport, commercial, educational, recreation and religious infrastructure for a remote island in East Indonesia.

Nebo Coal Project,

Thiess Peabody Mitsui

A study of the town infrastructure of Moranbah and Nebo for a feasibility study and an Environmental Impact Study of the Nebo Coal Project. The study involved housing for 2,600 people at Moranbah and 1,700 people at Nebo.

Lihir Goldmine Project

Kennecott Explorations (Aust) Ltd

GHD prepared a detailed feasibility study of communication networks for a major goldmine on Lihir Island, a small island north of Rabaul. It included 24 channel microwave bearer links to the island and a public network exchange. Private communication facilities included PABXs at the mine site, accommodation complex and office together with short-range microwave links. Satellite links for voice and data were both provided to the USA and Port Moresby. A local radio and television re-broadcast facility was proposed. In order to handle voice and data communications to mobile mining and maintenance staff a land-mobile network was proposed that would be integrated with the PSTN.

Comalco Alumina Project

Comalco Alumina Ltd

GHD prepared a concept Master Plan for $1B of State infrastructure associated with a $4B proposed alumina refinery. The master planning included an overall assessment of requirements for and costs associated with a 15,000 person township.

WATER SUPPLY & MANAGEMENT

BHPB Olympic Dam Primary Water Supply Study (13/12/06 – current)

Pre-Feasibility Study of Primary Water Supply for BHP Billiton Olympic Dam Mine. Project is for a 154 to 192MLD Desalination Plant at Port Bonython, Whyalla, South Australia, 320km pipeline approx 1.4m diameter with 2 to 3 Six Megawatt Pumpstations and a 1000ML storage facility at Roxby Downs township. Current estimated capital works cost is $700M plus. Study is being undertaken with Parsons Brinkerhoff as primary subconsultants and Currie & Brown as QS subconsultants. Deliverables include approx 180 drawings, a pre-feasibility report and a cost etsimate to plus/minus 25%.

Kalgoorlie Consolidated Gold Mines

GHD was commissioned to investigate the cost of harvesting brackish water that has assimilated on Hannan’s Lake, near the KCGM borefields, after the 1995 cyclone ‘Bobby’. GHD also investigated an alternative consisting of a dam on a watercourse draining to the lake.

Ross River Dam Spillway Enhancements

Provision of consultancy services (PM, Design and CPS) for Stage 1 lowering of spillway for Ross River Dam in Townsville for NQ Water.

GHD undertook preliminary risk assessment of the benefits of lowering the dam spillway. We undertook design and tendering. We are also engaged to provide CPS for the $2.5M spillway lowering (3.55m).

The project involves the removal of over 2,700T of mass concrete from an operational dam spillway in a manner that does not induce any stress onto the structure to remain. The contractor involved is also using diamond wire cutting and hydraulic splitting in conjunction with coring and Bristar to split the concrete blocks into manageable blocks.

This is the first stage of an overall upgrade to the Ross River Dam expected to cost $100M.

Fitzroy River Study, Yaamba Oil Shale Project, Qld Peabody Australia Pty Ltd

Numerous studies undertaken to provide detailed design of river diversion using mathematical computer modelling and possibly physical modelling of a section of the Fitzroy River. As the oil shale underlies the Fitzroy River and its flood plain river diversion and flood protection were a task as open cut operations had to be protected against extreme floods. Studies included:

Pre-feasibility study which investigated the requirements for road, rail and river diversion and mine flood protection

An analysis of infrastructure requirements, product pipeline and alternative port facilities was included

Analysis of the Fitzroy River and its diversion using computer modelling techniques.

Worsley Alumina Refinery This complex system, with lakes, diversion channels, runoff from the plant area and from red mud areas, and cooling loads was modelled to allow an increase in capacity to be evaluated. The simulation work showed that an increase would result in a rise in a critical lake containing process water. A further commission has been received, to evaluate options available to reduce the rise in the lake levels

DAMS

Mt Keith Nickel Dam

WMC

Investigation and design of 18m high earthfill embankment, 4km length, for use with a 7 riser central thickened discharge tailings system.

Ross River Dam Upgrade - Stages 2 to 5

Design and construction management of Ross River Dam Upgrade Stages 2 to 5

Olympic Dam

WMC

Geotechnical evaluation of foundations and embankment construction materials of karsitic soils.

Argyle Tails and Water Supply Dams

Argyle Diamond Mines

Investigation, design and construction supervision of ten dams in earthquake zone, including 30m rockfill embankment, 60m gravel embankment and a 36m earthfill embankment. Total volume of earthworks for dams exceeds 20 million cubic metres.

Fimiston 2 Dam

Kalgoorlie Consolidated Gold Mines

Investigation, design and construction supervision of a 28m earthfill embankment.

Cadjebut No.2 Dam

BHP Minerals

Geotechnical evaluation of foundations, investigations and design of a 24m high earthfill embankment.

Calliope Nickel

New Caledonia

Site selection for tailings dams up to 50m high for proposed nickel processing plant.

Gag Island Nickel Mine, Indonesia Investigation and design of a nickel mining development on Gag Island, including a 15m earthfill water supply dam.

Worsley Alumina Project – WA Investigation, design and supervision of refinery catchment lake, a 24m high earthfill dam on 10 to 40m deep compressible foundations including chemical grouting.

33m high, 287m long earthfill water supply dam

Three pipehead dams 20m high with chemical grouting

Six tailings dams up to 70m high and totalling 8km length.

TAILINGS MANAGEMENT

Worsley Refinery, WA Worsley Alumina Pty Ltd, Red Mud Disposal

Development of a new system of tailings disposal following a world study tour. This led to Australia and USA patents.

Upstream tailings dam construction to 40 metres height.

Rehabilitation of tailings:

Construction of three tailings dams.

Tailings pipelines and decant systems.

Water Storage:

Refinery catchment lake dam, 30 metres high with chemical grouting to isolate caustic water from the head waters of a fresh river.

Fresh water lake dam, 32 metres high, with associated spillway.

Chemical Disposal:

Solar evaporation ponds (2), double liner of clay and plastic membrane.

Pipehead dam to intercept any seepage from above storages.

Pump Systems:

Three pump stations including one mounted on an articulated barge. Associated pipelines.

Redirection of runoff with 5km of freshwater channels and other drainage structures.

Water management modelling for surplus water.

Seepage control and monitoring.

Boddington Gold Mine – WA Worsley Alumina JV

Design of the raising of an existing tailings dam, involving upstream and downstream raising techniques, foundation and borrow pit investigation, geology, analysis of stability, seepage, drainage, storm control, filters and erosion protection. Particular emphasis on differential settlement of old/new components of the dam. In addition updated five year plan for residue tailings disposal as well as undertook surveillance and performance assessments of two dams.

Investigation and design of extensions to tailings pipelines and pumping systems including field and laboratory testing, scale up of slurry rheology and design of pipeline prototype.

QAL Dam 2 Stage 6 Raising

Review of existing design for final downstream raise of the Red Mud Dam No. 2 at QAL, Gladstone; update of design to take account of existing conditions and proposed future raising by upstream raising; preparation of construction drawings, specifications and schedules; preparation of definitive design report and cost estimate.

TAILINGS MANAGEMENT

CAR Residue Area - Overall Management

CAR Residue Area - Overall Management of Services

Boddington Gold Mine – WA Worsley Alumina JV

EPCM contract valued at $13M for Residue Project. Integrated total design of dams, slurry systems, pumps, roads etc, together with overall management responsibilities.

Goro Nickel Mine – New Caledonia Greenvale Nickel JV

Design, construction and operation over a four month 24 hour/day test program of a major pilot plant. Preparation of ore slurries and 11km long slurry pipeline, storage agitation thickening and pumping at various moisture contents as part of a major mining feasibility study.

Savage River Mines – Tasmania Tailings Dam, Savage Resources

Design and construction advice for 65m high earth and rockfill Main Creek Tailings Dam for valley containment of tailings. Designed to maximise use of the mine waste in order to minimise costs and enable the dam to be built as an extension of the mining process. Dam also used as main mine haul road.

Mt Keith Centralised Tailings Storage WMC Projects & Engineering

Significant increases in production at the Mt Keith Nickel Mine in WA’s eastern goldfields near the town of Leinster meant that a new tailings system was required. Development of the unique system took considerable time spent in research, in-situ testing and process development. The adopted solution includes nine discharge towers up to 45 metres high spread across the storage, creating a deposition pattern similar to nine interconnected volcanoes. Selection of this scheme from numerous options was verified during a nine month study including pilot scale testing of tailing thickeners, discharge towers and scaled down beaches. Over a five month period, GHD designed:

three pump stations;

20 kilometres of piping;

instrumentation and controls;

18 kilometres of embankments;

internal causeways that lead to the towers; and

14 kilometres of drains.

GEOTECHNICAL ENGINEERING

Goro Nickel Mine, New Caledonia/Gas Island Nickel Mine

Indonesia

GHD was responsible for the management and execution of geotechnical investigations and the design for two project options in New Caledonia and Indonesia for Queensland Nickel Pty Ltd. The work involved an extensive programme of drilling (on-shore and off-shore), seismic traversing, test pitting, trial slopes (both mine and spoil pile) and construction of a trial mine pit to a maximum depth of 50m (Goro) and open cut operations to 30m depth (Gag Island).

The basic geotechnical problems addressed were:

Pit Slope Stability

Spoil Pile Stability

Hydrogeology

Trafficability

Haul Road Design

Bulking of Material

Structure Foundations

Water Supply, Tailings And Sedimentation Dams

Slurry Dewatering

Wharf

Stability of Ore During Shipment

Project Overall Water Management

Kidston Gold Mine – Qld GHD was responsible for part of the geotechnical design of this project located in North Queensland. The basis geotechnical problems addressed were:

Hydro-geology, including pit de-watering

Tailings Disposal

Water Supply

Structure Foundations

Haul Roads

Overall water management integrating groundwater, pit dewatering, plant runoff and tailings management

Hannan’s South Project – WA GHD carried out all geotechnical work for this project that is located south of Kalgoorlie in WA. The basic geotechnical problems addressed were:

Stability of pit slopes up to 60m high

Spoil pile stability

Foundation design

Mine dewatering

Flood diversion

Overall project water management

GEOTECHNICAL ENGINEERING

Worsley Alumina Project, - WA GHD was responsible for all geotechnical work on the Worsley Alumina Plant, south of Perth, and retain an ongoing responsibility for tailings management. Basis geotechnical problems include:

Hydrogeology and effect of plant seepage on groundwater

Cut and fill for plant site

Plant foundations

Water supply

Tailings (red mud) disposal

Overall water management

Alice Springs to Darwin Railway, Ballast Source Investigation

The aim of investigation was to identify, investigate and prove sufficient ballast quarry sites (minimum 6) within economic haul distance of the proposed railway corridor, for the production of 2.4 million cubic metres of ballast. The investigation involved:

Desk top study

Helicopter and vehicle reconnaissance

Approval to conduct field investigation from relevant authorities

Engineering geological mapping

Geophysical survey

Trial excavations

Drilling

MATERIALS BULK HANDLING

CQPA Stockpiles 19, 20 & 21 Detail Design & Doc.

GHD was commissioned to expand the current coal stockpiling capacity of CQPA's RG Tanna Coal terminal with the addition of Stockpiles 19, 20 & 21. The works included the addition of two overhead stockpile conveyors, moveable tripper, three reclaim comveyors and tunnels, three transfer towers depositing coal onto the existing ship-loading conveyors, and ancilliary items such as light towers and a dozer refuelling station, stockpile drainage and settling ponds as well as ground remediation work to overcome poor ground quality.

The project has an estimated total approximate value of $130 million and GHD's fees will be in the region of $3.5 million. In completing this project, Job manager for the works, Simon Frost, called upon the recent experience gained by GHD's Brisbane office, which included upgrades to CQPA's Stockpiles 15 through to 18 and the addition of a third rail dump station as well as many other similar material handling projects.

Crinum East Ramp Conveying System

Carry out preliminary design for the in-pit ramp conveying system

BMA Crinum East Overland Transport Options

Carry out a Coal Haulage Transport Study from the top of the Crinum East Ramp to the Gregory Plant and its top size reduction to minus fifty millimeters (-50 mm).

PT Adaro Overland Conveyor - Concept Development

Concept Development for 66km PT Ardaro Overland Conveyor and dump station.

Macquarie Generation Conveyor Upgrades ($0.3 M) 2000 - 2003

Assessment, redesign and capacity upgrade of a number of coal feed conveyors for the Bayswater Power Station, ranging from 2000 tph to 3300 tph.

GPA Stockpile 17&18 Construction Management

Provision of Superintendent Services for the construction of the Stockpiles 17-18 Development at the RG Tanna Coal Terminal, Gladstone.

Services included construction supervision and contract administration.

Liddell ROM Plant ($1.2 M) EPCM for the project. Initial design concepts, design, documentation and construction phase services for a 1200 tph ROM plant with primary, secondary and tertiary crushing and screening and feed to CPP

MATERIALS BULK HANDLING

Kooragang Island Coal Terminal Upgrade

PCWS

GHD was responsible for the initial studies and concept design works and subsequently appointed as construction manager for the $100M expansion upgrade of the Kooragang Island Coal loader in Newcastle, NSW. The project involved:

Extension of the present loading berth by 315 metres to permit two vessels to be berthed simultaneously

Dredging work to provide access to the berth and to utilise the dredged sand as landfill for additional onshore stockpiles

Extension of the stockyard conveyors and runways for stackers and reclaimers including duplication of the reclaim belt

The current expansion increased the arrival throughput capacity by 7Mt/a to 25 Mt/a.

Port of Brisbane

Queensland

Preliminary design and costing of a high capacity 30 Mtpa coal export terminal. Loading facilities cater for vessel sizes up to 170,000 dwt and included trans-shipment of coal from barge to stockpile. Three million tonnes storage was provided with a flexible stacking reclaim system to cater for a variety of coals.

Aurukun Alumina Project Feasibility study of materials handling facilities for Shell Minerals for a proposed bauxite mine at Aurukun Project, involved design of bauxite beneficiation plant, 40km overland conveyor system and port terminal.

Telfer – Input Overburden Crushing and Conveying

Western Australia

Feasibility design and capital and operating cost estimates for a new overburden input crushing and conveying system at BHP’s Telfer Line Store Mine, WA.

Marandoo – Tom Price Overland Conveyor

A feasibility study for a 35km overland conveyor as an alternative to rail haulage of iron ore.

RAIL

Northern Bowen Basin Rail Link Construction Phase

Provide design support, design intent verification and assistance in the resolution of non-conformances through a site based team supported by technical staff based in Brisbane and through staff visiting site, for the construction phase of the Northern Bowen Basin Rail Link.

Minerva Rail Loop Prelim Design Completion

GHD were commissioned to complete the preliminary design of the rail balloon loop to the Minerva Mine.

Wambo Rail Spur and Loop ($0.6) Current

Design and documentation for the proposed Wambo Rail Spur and Loop from Mount Thorley to Wambo Mine. All track, signalling and comms, civil works and structures designed and documented.

Macquarie Generation Rail Unloader. ($1.6 M)

Initial concepts to construction support for a 2500 tph rail unloader for Macquarie Generation. All road, rail, mechanical, structural, electrical and environmental engineering services provided

Yarrabee Coal Project, Qld Detailed engineering design and construction supervision of railway balloon loop, 40km haul road and coal loading facility for the Yarrabee Coal project. The inclined coal loading conveyor to the load out bin passes over the Capricorn Highway, the Central Railway Line and a railway passing loop. This saved the cost of a grade separation structure at the Capricorn Highway. The loading conveyor is fully enclosed to prevent spillage onto the road or the railway.

Gregory Mine Railway Design of specific aspects for the 68km Gregory Railway spur which links the BHP open-cut coal mine at Gregory to the main central line near Blackwater. Project included hydrology, design of drainage structure, trackwork quantities, and compilation of all specifications and documentation for the calling of tenders. The Mackenzie River Bridge – a prestressed structure 440m long, formed part of the design.

Curragh Railway Project As Project Managers responsible for programming, planning, establishment of control procedures, administration and accounting, survey, design and supervision of construction of railway works associated with the Curragh Coal Mine Development in Central Queensland. Project included at 14km branch railway and loading loop to serve the mine, 40km of track duplication work, housing, locomotive and wagon servicing facilities, rolling stock and central track control facilities.

PORTS

CQPA Stockpiles 19, 20 & 21 Detail Design & Doc.

GHD was commissioned to expand the current coal stockpiling capacity of CQPA's RG Tanna Coal terminal with the addition of Stockpiles 19, 20 & 21. The works included the addition of two overhead stockpile conveyors, moveable tripper, three reclaim comveyors and tunnels, three transfer towers depositing coal onto the existing ship-loading conveyors, and ancilliary items such as light towers and a dozer refuelling station, stockpile drainage and settling ponds as well as ground remediation work to overcome poor ground quality.

The project has an estimated total approximate value of $130 million and GHD's fees will be in the region of $3.5 million. In completing this project, Job manager for the works, Simon Frost, called upon the recent experience gained by GHD's Brisbane office, which included upgrades to CQPA's Stockpiles 15 through to 18 and the addition of a third rail dump station as well as many other similar material handling projects.

Gladstone Port Facilties for CAR1 Alumina Refinery

GHD designed the bauxite receival facilities and alumina export facilities for the CAR 1 project. Now designing the expansion for the second stage of this project.

POL - Container Terminal Stage 1 Design and documentation of the Stage 1 of the future container terminal.

SPC - Port Botany COI Independent review of options for expanding the container port at Port Botany and assessment of how the preferred option may affect environmemtal impacts outlined in the EIS on public exhibition. Work may involve presentations to a State Govt Commission of Inquiry

PORTS

Coal Import Port Trincomalee Power Station

Sri Lanka, Asian Development Bank, Ceylon Electricity Board

In association with Black & Veatch, MacKnight were appointed to carry out a feasibility study for a marine coal unloading terminal at Trincomalee. The project, undertaken in association with consultants who examined options for the power station itself and stockyard, entailed the examination of six alternative berth sites, defining shipping, small craft facilities, and alternative dredging options. Wind and wave conditions in the approaches to the alternative berth sites were evaluated. An extensive analysis of existing oceanographic measurements was carried out, in order to synthesise the complex wave climate at the sites. Once the optimum berth sites were determined, they were evaluated with alternative on-shore power station sites to determine the most attractive overall scheme. Complete designs were carried out at a final selected site.

Yabulu Nickel Port, Qld

Queensland Nickel

Detailed maritime transportation study for ore carriers and shallow draft barges. Materials handling assessment. Oceanographic data collection, off-shore site investigations. Wave climate, dredged approach and vessel navigation modelled. Design of trestle 1,350m long, wharf, berthing and unloading facilities. Design of moorings for barges during cyclones. Design of pusher/barge systems. Value $100M.

Port Hedland, WA Simulation modelling was undertaken for a new user wishing to export up to 50 Mt/a in addition to the 40 Mt/a exports by the then current users of this major iron ore export in the Pilbara region of Western Australia. The objectives of the modelling were to establish the necessary level of new facilities for the new user in the context of the existing traffic and to determine the interaction, if any, of the new user’s fleet with those of the existing users.

A major task of the modelling was to ensure that priorities were properly represented for vessels entering and leaving the port. A major navigational constraint with the existing channel was the limitation to three of the number of vessels leaving on a high tide. At the levels of throughput modelled the number of tugs and their utilisation were significant.

Overall the results showed that the total throughputs could be handled and that delays were essentially a function of the capacity of the individual users’ installed facilities although fleet interaction occurred at higher throughputs.

Contact: 201 Charlotte Street

Brisbane QLD 4000

GPO Box 668

Brisbane QLD 4001

P 61 7 3316 3000

F 61 7 3316 3333

E bnemail@ghd.com.au

www.ghd.com.au