MINE SERVICES AUSTRALASIA

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1 Mine waste engineering Total mine water management solutions Resource infrastructure Environmental and social consultation MINE SERVICES AUSTRALASIA GLOBAL LEADER IN THE MINING INDUSTRY

2 ABOUT US Klohn Crippen Berger Ltd. (KCB) is an international engineering, geoscience and environmental consulting firm with its head office in Vancouver and 9 offices in strategic locations in Australia, Canada, Peru and the UK. We have a strong reputation for quality service and technical expertise in a range of services including: Mining, Environmental, Water, Power, Transportation, and Oil and Gas. Since forming in 1951, we have a long history of participation in local projects, as well as a strong international reputation. We are working on some of the largest, most challenging engineering projects, both nationally and internationally. KCB Registra ons Quality ISO 9001 Environment ISO Health & Safety OHSAS AUSTRALASIAN GROUP Our Australasian operation services a wide variety of mining clients within Australia and across the Pacific Rim. We are based in two offices, Brisbane and Perth, which operate under an integrated management system consisting of quality, health and safety and environmental procedures. A large proportion of our work is conducted in geographically remote and often logistically challenging environments, domestically and internationally. We have a strong record of project delivery under extreme conditions from the wet humid tropics of equatorial Asia to arid remote mining areas within Australia. We pride ourselves on being a high-end technically strong consultancy with mature service delivery practices including interoffice and inter-group project collaboration. This latter element of our business is particularly advantageous as it permits us to efficiently provide more specialised services (such as mechanical, electrical and structural engineering) from other offices to our local clients. Key services established from our Australasian operations are based around three core technical streams. Geosciences (includes: hydrogeology, geochemistry and geology). Through this group we specialise in whole of site water and water quality management solutions, and have advanced capability and experience in modelling, mitigation design and field implementation of testing programs and system commissioning. Key aspects of water management undertaken by the geoscience group include water supply development, mine dewatering, project water balance simulations (operational and post-closure) and water disposal. Engineering services focus on geotechnical and civil services for mining environments. We have a particularly strong reputation for complex and large-scale tailings and waste rock design, often coupled with sediment and water diversion structure designs for severe rainfall events or for areas with annual rainfall measured by the meter. Our engineering experience extends beyond design and includes construction, QA / QC and third party review roles; and, integrated water management solutions through our geosciences group. Our Environmental services are distributed across baseline and impact environmental sciences, and operational support through project development and maturation, strengthened with consultation and community engagement experience. Regulatory reporting, document submission and application support form part of our experience. Although our operations are based around three core technical streams, the value-add that we provide is the ability to incorporate and understand each technical stream during project delivery. Many of our projects are generally multi-disciplinary, and often involve collaboration with external parties. Our clients include: Antamina Mines (Peru) AngloGold Ashanti Barrick Gold (multiple sites) BHP Billiton (multiple sites) BHP Billiton Iron Ore BHP Billiton Mitsubishi Alliance Bluestone Tin Department of Natural Resources and Mining Emperor Gold (PNG) Evolution Mining First Quantum Minerals (multiple sites) Fortescue Metals Group Freeport McMoRan (multiple sites) Gindalbie Metals Glencore Hidden Valley Mine JV (PNG) Iluka Resources Independence Group Millennium Minerals Ltd Nautilus Minerals (PNG) Northern Minerals Ltd Newcrest Mining (multiple sites) Ok Tedi Mining (PNG) Oyu Tolgoi LLC (Mongolia) Panoramic Resources Perylia Sagittarius Mines (Tampakan Project - Philippines) Rio Tinto (multiple sites) Teck (multiple sites) Vale (multiple sites) Woodlark Mining Ltd. (PNG)

3 TEAM LEADERS Chris Langton, General Manager, Australasia, has over 25 years of groundwater and environmental project experience in the mining, industrial and commercial infrastructure sectors. Chris Dickinson, Principal, Senior Consultant, has over 20 years of experience as a geologist, with almost 20 years as a consulting hydrogeologist working in Australia, Asia, the Pacific and Canada. Chris Stracho a, Manager Strategy and Growth, has over 17 years of experience in the field of geosciences in Australia, South America, Asia, Europe and the Pacific. Brent Usher, Manager Geosciences, has over 18 years of international experience in the field of aqueous geochemistry and hydrogeology for the mining sector. Steve Flynn, Manager Engineering, has over 20 years of international geotechnical engineering experience for the mining and construction industries. Ma hew Ind, Senior Civil Engineer, has over 17 years of experience in managing and leading mine and civil design projects in Australia and overseas. OUR MISSION To a ract, develop, and retain talented staff and quality clients who thrive on challenging projects OUR VISION Excellence, teamwork, and innova on building a be er world OUR VALUES People First Health & Safety Sustainability A respec ul, sa sfying and fun workplace Professionalism Quality Innova on Technical Excellence

4 MINE WASTE ENGINEERING Services Dam Design Geotechnical design of tailings and water dams. Designs incorporate seismicity, seepage control, stability, natural hazards, and water management. Waste Rock Dumps Geotechnical and environmental design of waste rock dumps. Water balance, water management and hydraulic structure design associated with dams waste dumps and open pits. Construc on Focus on building projects that work for the client and the community. Provision of QA / QC services, construction supervision / monitoring and cost control. Mine Opera ons Integration of international best practices following ANCOLD, ICOLD and World Bank / IFC guidelines. Preparation of Operation Maintenance and Surveillance Manuals and Emergency Preparedness Plans. Surface Water Management Design Hydraulic and hydrological assessment and modelling of project sites including dam break assessments and flood mapping. Design and implementation of site-wide surface water management plans capturing diversion, drainage, and attenuation. Development of projectspecific erosion and sediment control strategies to industry best practice. Tailings Technologies Designs to improve water management and reduce project footprints using dewatered, paste and thickened tailings. Alternative technologies using co-disposal with waste rock, cells to limit evaporation losses, cycloning and thickening of select tailings streams and combinations of conventional tailings storage and new technologies. Closure Design for long-term sustainable closure of dams, tailings impoundments and waste dumps. Risk and Benefit Assessment Risk assessment and risk management plans for mine waste and water facilities. Benefits assessment to balance and mitigate potential risks.

5 MINE WASTE ENGINEERING Experience Hidden Valley Mine, Papua New Guinea Over a 15 year period KCB has undertaken numerous work scopes at this open pit gold mine spanning concept to detailed design and construction monitoring for waste rock dumps and PNG s first large scale TSF which comprises two large earth-fill dams. Ok Tedi Mine, Papua New Guinea KCB has been working at Ok Tedi Mine since the mid 1980s with scopes ranging from detailed design and construction supervision of the Ok Menga hydroelectric power plant to the detailed design and construction supervision of the dredged sand stockpiles and pyrite concentrate pits at Bige. KCB has also carried out numerous studies for potential TSF sites and is currently undertaking scopes related to mine closure. KCB is retained by OTML to provide periodic site inspections and audits of the Bige site. Tampakan Project, Philippines KCB has undertaken feasibility investigations and designs for waste storage facilities and appurtenant structures for the proposed Tampakan copper mine in Mindanao. Facilities included a 1.4 Bt capacity TSF using centerline construction methods, a 2 Bt stable waste rock dump and a freshwater dam upstream of the TSF to manage the 55 km 2 catchment. Waisoi Copper Project, Fiji KCB undertook an integrated water and waste management prefeasibility study. This comprised of geotechnical and hydrogeological site investigations for proposed mine waste disposal options including co-disposal. Porgera Mine, Papua New Guinea KCB designed the stable waste rock dumps and the Waile Creek fresh water supply dam at the Porgera Mine. KCB also developed the concept for the eroding waste dumps, and undertook the investigation and design for the plant site. Several studies were undertaken to assess potential (tailings and waste rock) co-mingling options. Simberi Mine, Papua New Guinea Conceptual and detailed designs have been completed for stable waste rock dumps at the Simberi Gold Mine, PNG. Designs included geochemical segregation of waste and seepage, water management to reduce dump erosion and static and seismic geotechnical stability analyses. Collingwood Tin Mine, Qld, Australia KCB undertook the geotechnical and hydrotechnical designs, and provided construction supervision for the tailings storage facility at Collingwood mine.

6 GEOSCIENCES Services Geochemistry and Predic ve Water Quality Modelling Geochemical assessment of mine materials. Predictive water quality modelling for pre-mining environmental impact assessment, and mine operations and closure. Prevention of acid rock drainage and metal leaching through waste and water management strategies, and integration with engineering design and construction. Water Balance and Water Management Optimising water recovery in arid climates and improving storage, treatment and release of water in wet climates. Mine Dewatering & Depressurisa on Design of mine dewatering systems that manage both quantity and quality of mine water. Design of depressurisation systems for pit wall stability. Water Supply and Regulatory Approvals Groundwater and surface water supply and storage assessments for project requirements. Regulatory engagement and technical support for regulatory submission. Hydraulic Structures Design and construction of diversion structures, diversion channels, spillways, sediment ponds and decant systems. Assessment of dam break and tailings run-out scenarios to support emergency preparedness planning (EPP). Environmental Design Water quality modelling to integrate facility engineering design with limiting environmental factors in the receiving waters, such as aquatic life or downstream water use. Groundwater Modelling Groundwater modelling to allow predictive simulation of potential modifications to the hydrogeological system as a result of project development, operation, closure and post-closure. Modelling includes the predictive simulation of both flow and water quality characteristics. Baseline Characterisa on Groundwater and surface water monitoring program development and implementation for the characterisation of baseline conditions relative to proposed project infrastructure / footprint and potential receiving environment. Total Water Management Solu ons Holistic approach to water management incorporating project usage efficiency; re-use and discharge requirements; and, receiving environment compliance.

7 GEOSCIENCES Experience Nullagine Gold Project, WA, Australia Design, constructed and implemented supplementary groundwater supply for the project demand; including resource management and whole of site water accounting. Browns Range Project, WA, Australia Whole of site water management including the establishment of groundwater supply for project demand, pit dewatering assessment, groundwater impact assessment and post-closure pit void assessment. Cobre Panama Project, Panama Whole of site water balance update for the assessment of water supply reliability from surface water sources. Mount Isa Mine, Qld, Australia Geochemical and hydrogeological assessment of various waste facility and aquifer systems for the purposes of operational management, impact assessment, closure requirements and regulatory approvals. MacArthur River Mine, NT, Australia Provision of geochemistry, hydrogeological and engineering services with respect to the overburden emplacement facility and tailings storage facility for the purpose of regulatory review, impact assessment and closure requirements. Lihir Gold Mine, Papua New Guinea Development of a regional scale hydrogeological model to predict a range of mine inflows with time, apportioned by source including potential seawater ingress and structurally derived flows. Model was adapted for proposed mining expansion under different development scenarios. Dewatering options were developed and consideration of dewatering effectiveness presented for consequent depressurisation studies. Ok Tedi Gold Mine, Papua New Guinea Several iterations of numerical modelling of the Ok Tedi Pit with a focus on post mining recovery, development of pit lake conditions (elevation and timing), assessment of regional post mining groundwater conditions and development of input for pit lake water quality assessments. Work included consideration of underground mining impacts on the pit void post closure. Goro Nickel Project, New Caledonia Groundwater monitoring reviews, PFS hydrogeological and hydrological studies for in pit tailings disposal, PFS level closure planning for tailings and concept design investigations (hydrological, hydrogeological and closure) for proposed tailings management facilities. Field studies, drill planning and specialised recommendations and programs to characterise the unique and complex hydrogeological conditions of the site. Antamina Mine, Peru Whole of site water balance / water quality model development, implementation and scenario modelling to predict water quality and flow predictions across the project site; and, allow operational management of waste and water facilities. Tampakan Project, Philippines Mine waste (rock and tailings) geochemical characterisation, site-wide water balance modelling and tailings storage facility seepage assessment.

8 ENVIRONMENTAL & CONSULTATION Services Baseline Studies Characterisation of pre-project environmental conditions in the potential project area of influence. Coordination of multidisciplinary studies relating to the physical, biological and social environment in a diverse range of environmental settings, covering tropical, subtropical and arid zone climates. Conducted for regulatory approval, project financing and corporate governance in both green fields and brown fields project settings. May include the identification of permitting requirements and strategies. Stakeholder Consulta on, Capacity Building and Social Management Plans Facilitating understanding, involvement and information exchange during all project stages through a variety of techniques, including the development of social management plans, communication and consultation plans and social impact assessments. Culturally appropriate materials and tools are devised to improve this process. Training, skills development and facilitation of workshops are undertaken with clients and local communities to build their capacity for working in a manner aligned with corporate social responsibility best practices. Impact Assessment and Mi ga on Plans Assessment of potential environmental and social impacts as well as cumulative effects that would be expected as a result of the proposed project. This assessment starts with the fundamental environmental and social conditions prevailing in the immediate area of the project and within the surrounding communities and includes the development of mitigation, enhancement, compensation and monitoring plans. Environmental Management Plans Developed for regulatory permitting and as part of a Company s Environmental Management System for both the construction and operational phases of projects. Content and structure are specifically designed to meet the requirements of the project and usually include monitoring, emissions control, impact mitigation and procedures for documentation and reporting. Hazard identification and risk assessments can be undertaken during EMP development to understand the pathway from a potential hazard to potential impact and best design the EMP to mitigate potential impacts and provide a better environmental outcome for the project. Monitoring and Regulatory Compliance Repor ng Establishment and installation of environmental and social monitoring programs during construction, operations and post-closure, including compliance monitoring and reporting for national regulatory agencies. Monitoring plans designed to follow on from baseline studies and measure levels of impact on the environment resulting from the project. Closure Planning Development of integrated conceptual and detailed closure plans and closure cost estimates, including the development of closure criteria and incorporating environmental and social factors into final land use planning, optimising opportunities and minimising long-term risk.

9 Experience ENVIRONMENTAL & CONSULTATION Hidden Valley Mine Advisory Commi ee, Papua New Guinea KCB was appointed as AC members for a period of four years in The AC provided high level review, recommendations and general advice addressing mine site waste and environmental management strategies, general riverine impacts and social issues covering a range of community and government stakeholders. Ok Tedi Mine SEIA, Papua New Guinea As part of the 15 year extension to its current mine plan, KCB was commissioned to undertake a socioeconomic assessment of this proposal. The work was completed following an extensive analysis of unedited community engagement and consultation reports involving 156 separate villages. Ok Tedi Mine Community Rela ons, Papua New Guinea The Ok Tedi Mine community relations team is responsible for gaining and maintaining the company s license to operate covering a demographic of over 100,000 people. The team has a current staffing level of 40 with varying levels of qualifications and experience. KCB has been commissioned to undertake a CR capacity review, develop a strategic CR management plan and, facilitate training programs aimed at updating the present skills base. Tampakan Copper Mine, Philippines KCB completed a Social Impact Assessment and Community Consultation Program for a mine access road. Using IFC performance standards we worked closely with local consultants and experts from the local university to complete the project. Cracow Mine, Qld, Australia Development and implementation of Receiving Environment Monitoring Program (REMP). Involved site selection for surface water quality and macroinvertebrate sampling, development of trigger values and submission to regulator for approval. Quarterly monitoring results are interpreted against the trigger values, which are constantly reassessed as more data is generated. Lihir Gold Mine, Papua New Guinea Comprehensive mine closure plan update including environmental and socio-economic aspects and cost estimate update.

10 RESOURCE INFRASTRUCTURE Services We integrate engineering, geoscience and socio-environmental consultation to study, design, build and close projects in the mining and energy sectors. Our engineering is supported by environmental, permitting, social and consultation teams. Process, Pipeline and Mechanical Conceptual through to detail design of water / slurry pipelines for water supply, reclaim systems, drainage and irrigation. Designs also relate to pump / barge specifications, boilers and steam distribution, industrial heating and ventilation. Electrical, Power and Instrumenta on Assessment, design and implementation management of generators, transmission lines, power distribution (and associated load studies), transformers and switchyards, instrumentation control systems, and excitation and SCADA systems. Ports and Transporta on Assessment and design of container terminals, drydocks, wharves and project access roads. Hydroelectric Power Genera on Investigations, design and construction management of large hydro-electrical projects to smaller run-of-river hydro schemes. Design incorporation of Kaplan, Bulb and Francis & Pelton turbines and generators. Specific design components include gates, stoplogs, trash racks, turbine valves and hydraulic control systems. Bridges, Tunnels and Structures Bridge designs include pre-fabricated truss stream crossings to larger cable stay bridges; and swing and floating span structures. Design aspects for tunnel infrastructure include hard rock and cut / cover tunnels; and, associated retaining walls and rock fall protections. Infrastructure foundation assessments include mill and plant structures; truck shops; camps; and, auxiliary support facilities. Cranes, Li ing Equipment and Conveyors Design of loading facilities include bridge, container, hammerhead and level luffing cranes; ship unloaders; marine loading ramps and drydock equipment.

11 Experience RESOURCE INFRASTRUCTURE Ok Tedi Mine, Papua New Guinea Mechanical and electrical design of cyclone systems. Retrofit of valve chambers and capacity upgrade at hydro-electric plant site. Browns Range Mine, WA, Australia Design of water supply reticulation system, including equipment selection, control philosophy, quality estimates and CAPEX / OPEX cost build-ups. Nam Theun 2 Hydroelectric Project, Laos Provided bid design, final design and construction engineering services for the two main civil works packages for this 1074 MW project. Antamina Mine Water Pump-back System, Peru Designed a new pump-back system to accommodate the low-grade ore stockpile. The surface water management plan comprised a system of lined ponds, ditches, pump-back stations and sodium-hydroxide dosing to control the quality of surface water released to the environment. Vale Inco, Canada Pre-feasibility study to assess options to improve reliability of the reclaim pumping system that supplies water to the Upper Pond. Votoran m Metals Goethite Pumping System, Peru Design for the replacement of a goethite pumping system at the Votorantim zinc refinery in Peru. Upgrade of pumps and associated piped infrastructure.

12 OFFICES Canada Vancouver Calgary Edmonton Saskatoon Sudbury Toronto Peru Lima Australia Brisbane Perth Brazil Belo Horizonte ALSO REGISTERED IN Indonesia Mauritania United Kingdom United States BRISBANE OFFICE LEVEL 5 43 PEEL STREET SOUTH BRISBANE, QLD 4101 AUSTRALIA PHONE: PERTH OFFICE LEVEL MURRAY STREET WEST PERTH, WA 6005 AUSTRALIA PHONE: Visit us on: