The Uralmashplant Joint-Stock Company is the leading Russian supplier of plants and machinery for oil-and- gas production and mining sectors, as well

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1 EXCAVATORS

2 The Uralmashplant Joint-Stock Company is the leading Russian supplier of plants and machinery for oil-and- gas production and mining sectors, as well as the iron and steel industry. In the middle of 90ths, the Uralmashplant was included in OMZ United Heavy Machinery (Uralmash Izhora Group), and since 2007 it constitutes a part of the Machine- Building Corporation Uralmash. Engineering, marketing and sales of equipment are organized on a product basis: Oil-and-gas Division: complete mobile, cluster, and stationary drilling rigs with capacity from t to 00t, sets of drilling equipment. Mining Equipment Division: mining shovels and draglines, grinding and crushing equipment, cement production machinery, etc. Metallurgical Equipment Division: sintering equipment, pelletizing plants, presses, blast furnace equipment, continuous casters, equipment for hot and cold rolling shops, rolls for rolling mills, etc. NPO VNIIMETMASH focuses on design and engineering of materials handling equipment: heavy-duty cranes for iron and steel companies, materials handling machinery for nuclear power plants, special- and general-purpose overhead travelling cranes. We strive to become a world-class machinebuilding company, which will be able to fully meet the Customer's needs. For many years walking draglines and shovels are manufactured at Uralmash, have been used in more than 20 countries worldwide. Our machines are notable for high reliability, ensure high output and environmental safety, are easy to operate and maintain. Since 1947 it were delivered 253 walking draglines, over 13 thousands shovels EKG-5A (and its forerunners), 20 shovels EKG-20, 11 shovels EKG-12, 1 shovel EKG-18 and 7 crawler-mounted draglines EKG-3,2.20 by Uralmashplant. EKG-30 is under process of manufacturing. 2

3 EXCAVATORS Walking Draglines They are used in open pit mining (coal, shale, ferrous and nonferrous metal ores, gold, raw materials for chemical industry and refractories, etc.). The draglines are designed for stripping overburden with direct dumping the waste either into the mined-out space or to the pit side. Walking draglines may transport the material to relatively large distances. When mining rocky material partial or whole blast-loosening is demanded. The simplicity of erection, maintenance, repairs, reliability of the equipment in operation, increased availability, high maneuverability, wide technological possibilities allow to use our machines with high efficiency. Walking draglines operate reliably in the temperature range from minus 50 to plus 40 C. We offer our Customers 13 types of walking draglines with bucket capacity from 11 up to 3 0 m and boom length from 75 to 130 m, including six types of draglines with decreased ground pressure.

4 Walking Draglines The high performance of walking draglines is achieved due to the following specific technical features: the boom is a triangular three-dimensional construction made of tubular elements. The top dragline boom chord is preliminarily compressed with a force, exceeding the tension caused by the working loads. This increases the fatigue strength of the structure, its reliability and service life; the base and revolving frame consist of segments connected by high-strength bolts, this decreases erection costs and time; the hydraulic walking mechanism provides smooth moving and high maneuverability of the machine. Depending on the model the walking mechanism may be made with two or four walking shoes; the smallest dragline model has a mechanical four-link crank driven walking mechanism with d.c. electric drive; the swinging mechanism may be equipped with a different number of planetary or conventional gear cases; large dragline models have gearless drive of swinging mechanism with 4, or 8 low-speed electric motors; roller circle with tapered rollers and forged rails; two operator s cabs enable control either from the left or the right side depending on particular conditions in the pit-face. The cabs are designed in compliance with the latest requirements of ergonomic standards and are comfortable to work in; automatic lubrication system ensures durability of the dragline mechanisms and units with minimum power loss for friction and provides for saving of lubricants; the main mechanisms are driven by d.c. electric motors powered via the motor-generator system excited by static thyristor converters. The control system is based on the use of semiconductor elements; the information and diagnostic system created on the microprocessor base allows to monitor the dragline output, electric power consumption, setting parameters, loading and ventilation of electric machines, temperature of bearings and field windings; the electric machines and control systems have been designed specifically for the operation conditions of draglines. 4

5 PARAMETERS 3 Bucket capacity, m Boom length, m Boom angle, degrees Suspended load (max.), tf Cycle duration (material of category I), s Dumping height, m Digging depth, m Dumping radius, m Revolving frame clearance, m Diameter of base, m Ground pressure when operating and moving, Mpa Walking shoe dimensions (length and width), m Working weight, t Hoist winch power, kw Swinging mechanism power, kw Drag winch power, kw Propel machinery power, kw Main motor power, kw Supply voltage, k Drive type ESH / õ GM ESH ,5 0.5/ õ ESH.0 * the draglines can be equipped with the following drive systems: thyristor converter d.c. motor and direct frequency converter induction motor / õ ESH / ESH / ESH ,3 0.3 / ESH / ESH / õ 00 3õ 30 2 EXCAVATORS Walking Draglines ESH / õ 00 3õ 30 2 ESH / õ õ õ 00 õ 30 2 GM ESH / õ õ õ GM ESH 0.0 ESH / x x 0 8x 00 4x x 300 GM / x x 0 8x 00 4x x 300 GM

6 Crawler-Mounted Draglines Crawler-mounted draglines are mobile machines created on the basis of the existing rope shovels EKG-5А and EKG-12. They are designed for mining mineral resources and overburden rock with direct dumping the waste into the mined-out space or loading onto transport facilities. On the Customer s request the dragline may be equipped with buckets of different types and fit to the specific operation conditions. Crawler-mounted draglines may be used in any small quarry for extraction of soft materials (clay, sand, marl), for stripping overburden, for opencast extraction of coal and construction materials, for mining gold from gravel deposits, as well as for digging ditches, construction of channels and dams, slag processing. Design Features: the main bearing structures boom, revolving frame and base frame are made of rolled alloy steel, ensuring the reliable operation of the machine all the year round; mechanisms are manufactured of high-alloy steels thus ensuring trouble- free operation under high dynamic loads; bucket geometry assures improved filling and emptying of the bucket. The bucket elements lip and teeth are made of manganese steel, ensuring the wear resistance and ncreasing the operation time; oscillating fairlead sheaves and boom point sheaves prevent rope run-off and wear; d.c. electric drive (GM system) with transistor excitation of the electric machines and digital control system; individual electric drives of the main mechanisms increase the operation time of the equipment and facilitate the control; ventilated electric drive allows continuous operation of the walking mechanism; the operator s cab conforms to the ergonomic requirements. Being situated apart from the machinery house, it ensures high noise insulation, complete visibility of fairlead and boom point sheave as well as excellent working pit-face visibility.

7 EXCAVATORS Crawler-Mounted Draglines PARAMETERS EDG EDG À* EDG-4.25 EDG-4.25À* EDG Bucket capacity, m Boom length, m Maximum dumping radius, m Maximum dumping height, m Maximum digging depth, m 27.5 Crawler belt width, mm Suspended load, kn Maximum hoist effort, kn Maximum drag effort, kn Average ground pressure at moving, 4 (1.57) 127 (1.3) 4 (1.57) 127 (1.3) 225 (2.3) 2 kpa (kgf/ñm ) 3 Theoretical output, m /h Calculated cycle time at swing angle of and discharge into dump, s Travel speed, km/h Main motor power, kw 1 Supply main voltage, kv Working weight, t * draglines with reduced ground pressure 7

8 Shovels with Rack Crowd The crawler-mounted mining shovels are designed for mining and loading rock in transport facilities in open mines, for dumping, loading operations in ore storage yards and for use in mines with in-pit crushing technology. Modifications of the basemodels allow adapting our machines for any technology. Depending on the mined rock category, mining is carried out with or without preliminary blasting. Our shovels are manufactured for operation in various climatic conditions. All mechanisms of the shovels represent separate units. This allows repairing of complete units. Design features of the mining shovels Uralmash: with double-leg handle; cable crowd.

9 EXCAVATORS Shovels The crawler-mounted mining shovel EKG-5A is a basic model, embodying the designing and service experience accumulated for many years. EKG-5A is the smallest model in the range and nonetheless a widely used machine. A number of modifications being now successfully operated, have been created on the basis of EKG-5A, wellknown to our Customers as a reliable and high-productive machine: EKG-5B The bucket of the shovel is equipped with air-operated impact teeth, switched on automatically in case the resistance of the rock increases and breaking rock while digging. Such design allows mining of fissured rock, frozen ground, coals of low and medium hardness without preliminary loosening. The use of these machines is mostly efficient when blasting is impossible for the ecological or other reasons. EKG-5D The distinctive feature of this shovel is diesel drive of d.c. generators that feed the motors of the basic mechanisms. It enables mining and loading minerals or overburden rock in transport facilities in sites where electric power is not available. A remote control system allows the operator to monitor the operation of diesels from the cab. EKG-5Us The shovel with elongated front-end equipment, is designed for mining higher pitfaces, may load trucks with 75-1 t capacity. Shovels EKG-5A and modifications are supplied to the Customers as large assembled units, what ensures their easy erection on the site. 9

10 Shovels Shovel EKG-12 is a basic model remarkable for its high technical parameters, wide technological capabilities and operation reliability and meets the sternest Customer s requirements the following modifications have been created on the basis of EKG-12: EKG-12V is designed to mine the minerals without preliminary blasting and is equipped with air-operated impact teeth built in the dipper. The use of EKG-12V permits to lower considerably or exclude blasting and related expenses, as well as to avoid to some degree environment pollution; EKG-9Us with elongated frontend equipment. Shovel EKG-20A a basic model is a heavy-duty high-production mining shovel designed for operations in severe mining, geological and climatic conditions. The shovels EKG-12 and EKG-20A are considered as heavy models. The powerful rack crowd mechanism and rigid double-leg handle make these shovels indispensable in mining heavy rocks. Design Features: rack-and-pinion crowd with doubleleg dipper handle and welded boxshaped boom ensure successful operation in heavy rocky benches or in poorly blasted rocks; direct rope hoist with automatic equalizing of efforts in both rope strings; dipper, welded of heavy castings, with self-tightened wedge fixed teeth. The free suspended dipper door has widely extended hinges to exclude shocks against the boom; the shovels are equipped with the boom hoist winch to facilitate the erection and repairs; the filtered air ventilation units ensure clean air supply and create a positive pressure in the machinery house; the shoe brakes of the main mechanisms are air released; double crawler undercarriage with open large rollers and individual drive for each crawler, easy accessible for maintenance and repair. The tumbler sprockets with replaceable teeth are arranged above the ground level and do not bear the support forces. The crawlers are tensioned with built-in hydraulic cylinders. The propel motors are forced aircooled; the main bearing structures are manufactured of alloy steel, the boom and dipper handle of highstrength steel; the shovels are equipped with cable reel with at least m cable reeling capacity; the main mechanisms of the shovel have individual adjustable d.c. drives and digital control system; automatic lubrication system minimizes the expenses for maintenance during operation.

11 EXCAVATORS Shovels PARAMETERS 3 Capacity, m Maximum digging radius, m Digging radius at floor level, m Maximum digging height, m Maximum dumping radius, m Maximum dumping height, m Radius of rear end, m Revolving frame clearance, m Overall length of crawlers, m Crawler belt width, mm 2 Average ground pressure at moving, kgf/cm Average ground pressure at moving, kpa Maximum hoist effort on the dipper, kn Designed cycle time with swing angle of 90, s Maximum climbing angle, rad (degree) Travel speed on the level floor, km/h Supply voltage, kv Electric drive type Main motor power, kw (transformer power, kva) Working weight, t EKG-5A EKG-5V EKG-5D EKG-5A-US EKG-12 EKG-18 EKG-30* /10/ /1.72/ /12/ (12) 0,55 3; 3.3; ;. GM with MA* /10/ /1.79/1.52 2/17/ (12) 0,55 3; 3.3; ;. GM with MA* (400) / /1.72/ /12/ (12) 0,55 - dieselelectrical* /10 2.2/ / (12) 0,55 3; 3.3; ;. GM with MA* / / / () 1.1 GM 1 55/ () 1.1 AC () 1.1 AC * - generator-motor drives with thyristor excitation or microprocessor control have been developed ** - in development 11

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