AGGREKO: AN INTRODUCTION

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2 AGGREKO: AN INTRODUCTION Aggreko has more than 45 years of experience with operations spanning across all continents of the globe and today is the largest rental power generation services company in the world. With over 2,200 highly skilled and experienced staff in more than 100 locations, Aggreko has the capability to design and deliver tailor-made power solutions for the mining industry. Aggreko precisely understands the needs of the mining industry. Increasingly called upon to provide power rental solutions for mining projects around the world, we understand that no two mining projects are the same. Through our experience we have gained invaluable knowledge to effectively tailor the power solution to the specific requirements of your mining project. Aggreko owns and maintains the world s largest power rental fleet, consisting of diesel and natural gas fired generating sets. We can quickly install single or multi-megawatt capacity power plants at a project site to serve various mining applications. AGGREKO RENTAL POWER GENERATION SERVICES INCLUDE Rental of Complete Range of Equipment Power Assessment and Power Plant Design Preparation, Testing, Mobilization and Transportation of Equipment Installation and Commissioning Operation and Maintenance Decommissioning and Demobilization

3 APPLICATIONS OF AGGREKO RENTAL POWER SERVICES Power for mine construction Power for accommodation and support facilities Remote mine power where grid supply is unavailable or unreliable Early power before grid supply or main power plant is installed Supplemental power during upgrade/expansion of mine Emergency breakdown coverage BENEFITS OF AGGREKO RENTAL POWER SERVICES Turnkey Power Solution - Aggreko assumes total responsibility for design, installation, commissioning, operation and maintenance of the power plant. No Capital Expenditure - Allows you to pay for power capacity as per your need. Improves cashflow. Reliability - Aggreko equipment is designed for rental operation in harsh environments and manufactured in-house to stringent ISO standards to ensure failproof operation. Flexibility - Modular 1MW power units allow increase/decrease in plant capacity in line with load demand during the project. Rapid Deployment - Equipment housed in standard 20 ft. ISO containers for ease of transportation by land, sea or air.

4 BENEFITS OF AGGREKO RENTAL POWER SERVICES TURNKEY POWER SOLUTION At Aggreko, we don t merely supply power rental equipment. We assume total responsibility for providing a turnkey solution right from the design of the power plant to its operation and maintenance on-site and finally decommisioning and transportation of the equipment at the end of the contract. Aggreko s turnkey approach allows you, the client, to focus on your core operation mining. NO CAPITAL EXPENDITURE - PAY AS YOU PRODUCE Aggreko power solutions impact positively on the cash flow of a mining project by providing an alternative to making up-front capital expenditure in purchasing power equipment. Renting a power plant releases the miner from the costs and administration associated with plant ownership. Furthermore, this arrangement enables the client to make staged payments over the duration of the rental period that can be financed from the sale of the commodity being mined. "Within three weeks of signing a contract the necessary equipment had been sourced, checked, mobilized, installed and commissioned on the mine site. During the six month crisis, the power station performed without fault and ensured continuous mine production by supplementing the national grid." Dave Ingle, General Manager, Abosso Goldfields Limited

5 RELIABILITY Over the years Aggreko has built a reputation as a supplier of reliable and guaranteed power. Aggreko generators are designed, assembled and tested to stringent standards at the company s own ISO 9001:2000 accredited manufacturing facility in the UK. Aggreko equipment is designed to operate in harsh environments and in extreme climatic conditions from very high ambient to sub zero temperatures. Based on the site, the Aggreko service and maintenance staff provide round-the-clock supervision to ensure the power plant operates at peak performance, delivering a guaranteed power supply. FLEXIBILITY Aggreko power solutions come with the flexibility to accommodate the fluctuation in power requirement over the life cycle of a mining project. The modular design of Aggreko power plant utilizes synchronised base 1MW units to build the required multi-mw capacity. During the course of the project, if the demand increases or decreases we can add or take away the generating capacity as required. RAPID DEPLOYMENT Aggreko power plants can be operational on-site within a matter of days from the date of signing a contract. With full control over the world s largest rental fleet located in strategic locations around the world, Aggreko is able to mobilize, transport, install and commission the power plant within very short timescales. Aggreko equipment is housed in standard 20 ft. ISO seaworthy containers that facilitates ease of handling and transportation by sea, land or air.

6 AGGREKO EQUIPMENT 1 POWERING A MINE SITE Key elements on a mine site that need reliable power for smooth operations AGGREKO GENERATORS Diesel or natural gas powered. Dual frequency capable - 50Hz or 60Hz. Suitable for high or low ambient temperature and harsh environments. Sound attenuated enclosure. Save ALL containment base - Prevents spillage of ids or fuel and eliminates need for temporary bunds. Power to operate essential mining equipment 2 Power to drive conveyor belts to transport ore between the mine, storage and processing areas FUEL TANKS Flexible fuel storage capacities to meet the client s requirement. Environmentally safe tanks - Double wall construction. Containerized or cylindrical design with drip tray. 2 3 FUEL SKID Fuel unloading and transfer of fuel to bulk storage tanks. Includes high accuracy ow metering. Power to operate the hoists supported by a headframe for lifting and lowering people and ore in an underground mine. 1

7 AGGREKO EQUIPMENT 4 HIGH VOLTAGE POWER TRANSFORMER Manufactured and tested to meet or exceed IEEE. NEMA and ANSI standards. UL 1562 listed. Multi-tap, multi-voltage for range of common utility voltages from 3.3kV to 15kV Self contained modules with switchgear and built-in protection. Power for the workers accommodation blocks and site offices Power to operate machinery in the ore processing plant SPARES CONTAINER A comprehensive stock of spare parts and consumables are always available at site CONTROL AND METERING Microprocessor based generator set metering, monitoring and control system including automatic synchronization with KW and PF control in parallel mode.

8 CASE STUDIES POWER FOR MINE CONSTRUCTION The client was constructing what was to become the second largest copper and gold mine in the world. The site was located in the middle of the Gobi Desert, one of the most remote places on earth with an extremely harsh climate. With no utility power available for the first years of development, the client would need temporary power to begin sinking the shaft to facilitate underground mining. Aggreko was selected to provide a 4MW temporary power package due to our experience and reputation for performing in adverse site conditions. Aggreko provided a standard six pack configuration consisting of five 1MW units plus HV transformer, modified for use in Arctic-like conditions. "We were extremely impressed with the rapid, professional response received from Aggreko. Within six weeks of contract effectiveness the necessary equipment had been mobilized, installed and commissioned on site ensuring a continuous power supply. At all times, Aggreko personnel demonstrated a thorough grasp of the urgency and critical nature of our needs and acted accordingly." Francis Gbeddy, AG, Director, Ministry of Mines & Energy, Ghana

9 POWER FOR STAFF ACCOMMODATION AND ESSENTIAL FACILITIES Power was required for operations at a mine situated at an altitude of 4,400 metres in the Andes mountains. As well as the main mining operations, a reliable power supply was also required to ensure that more than 400 resident workers, housed in a base camp, were comfortable during the freezing conditions in winter. Aggreko supplied an 8MW / 11kV power package including operation and maintenance personnel to ensure 100% power availability to support mining activities and provide safety and comfort to the workers living there. POWER FOR REMOTE MINE WHERE GRID IS UNAVAILABLE Often mines are located in isolated areas where there is no grid connection or where it is too expensive to install a power line. Power was required for one such mine in Ghana, the Damang gold mine owned by Abosso Goldfields. Aggreko s capability to deliver power solutions in remote areas was well known to the customer. Within three weeks of signing the contract, the necessary equipment was mobilized, transported, installed and commissioned on site.

10 EARLY POWER BEFORE AVAILABILITY OF LOCAL GRID The client was unable to begin mining operations at a remote gold mine in Guatemala as construction of the grid line that was to power the mine was indefinitely delayed. Aggreko was asked to provide a quick solution so that production at the mine could begin without any further delay. At short notice Aggreko shipped and installed 8.8MW of power at 4.16kV to power the mine processing equipment for commissioning and later full operation of the ore processing equipment. "Aggreko were only too happy to help us and gave good advice on what to use and why. Our requirements were met to complete satisfaction." John Watson, Contract Manager, Norilsk Nickel, Australia

11 POWER FOR EMERGENCY/BREAKDOWN COVERAGE Operated by Ashanti Goldfields in Guinea, the Siguiri gold mine had a problem when the mine s on-site generators broke down. The mining operations came to a halt as there was no other reliable source of power that could be made available quickly. Aggreko was contacted in this dire situation to provide a solution. Aggreko responded by air freighting a 3.2MVA power package within 3 days from receiving the initial call from the customer. The equipment was delivered to the airport at Conakry (the capital of Guinea) and then transported some 550 kilometers by road to the mine site in north-east Guinea. Aggreko personnel then installed and commissioned the power plant ensuring minimal downtime. The mine was back in business within a week of the SOS call to Aggreko. POWER FOR MINE EXPANSION The Sunrise Dam gold mine in Western Australia, owned by Anglo American needed an upgrade of its process mill as part of the mine expansion activities. Additional baseload power was needed on a short term basis to cater for the increased processing capacity. Aggreko installed a 4.8MW / 6.6kV temporary power station that fed directly into the Bus-Bar of the main power plant to meet the short term rise in power demand. The power package comprised of 6 x 1250kVA diesel generators, 1.3 km length of LV cables and service engineers to maintain and operate the equipment. Aggreko also carried out commissioning and management of a fuel control system on its generators. The generators were configured to start, automatically synchronise and run in parallel with the main power plant. "Aggreko are very professional and set their standards very high. The services they provide is always of the highest level." Mike Owen, Services Engineer, Xstrata Coal, Australia

12 AGGREKO PEOPLE The fact that Aggreko enjoys such an enviable reputation in the marketplace is largely due to the skill, experience and competence of the people who work at Aggreko. Not only do we provide our customers with specialised rental equipment, we also help engineer and design integrated solutions to meet the exacting needs of our customers. Aggreko engineering teams will work alongside your engineers to specify the most reliable and cost effective solution to your power needs. The Aggreko team will mobilize, test, dispatch and install all the equipment required in the shortest time possible. Throughout the project our specialist project managers and technicians will operate and maintain the equipment at peak performance. Our engineers will interface with you regularly to ensure we deliver seamless power on a 24/7 basis.

13 SPECIALIST SERVICES QUALITY, HEALTH, SAFETY AND ENVIRONMENT (QHSE) The scope of Aggreko service goes beyond just providing reliable power solutions. Above all, Aggreko values quality and safety for every project that we undertake. Stringent quality processes are applied to comply with the best operating practices in the industry. Aggreko not only operates to its own quality standards but also adheres to the local environmental and safety regulations as applicable to Aggreko s nature of services. AS A STANDARD: All Aggreko processes are ISO 9001:2001 compliant QHSE system is implemented at all sites Environmental, Health and Safety (EH&S) kits delivered to every site EH&S training is provided for our own staff and local employees in Basic first aid Fire fighting Crane and forklift operation High voltage operation Defensive driving Periodic audits are carried out by trained auditors and actions are completed within aggreed time frame. EH&S Key Performance Indicators (KPIs) monitored and reported periodically to the Aggreko Senior Management FUEL MANAGEMENT Along with the power generation equipment, Aggreko can also supply large fuel storage tanks to facilitate storage of fuel on site. All fuel tanks are fully bunded and pressure tested to prevent the risk of spillage. To monitor and conrol the quality and quantity of fuel, Aggreko can also supply: Fuel filtration system High accuracy fuel flow meters Winterization packages with trace heating systems. TEMPERATURE CONTROL SERVICES In addition to power generation, Aggreko also offers a range of specialist temperature control and cooling rental solutions for the mining industry. Applications include ventilation of underground mines, process cooling and decreasing downtime during scheduled maintenance shutdowns. Please contact us for more information about our temperature control services.