“BELAZ” JSC – management company of holding “BELAZHOLDING” (Zhodino, Republic of Belarus):

Stepuk O. G., Acting First Deputy Chief Executive Officer on Engineering Policy and Innovation Technologies – Chief Engineer, e-mail: O.Stepuk@belaz.minsk.by

Semko S. N., Chief Design Engineer of Underground and Road-construction Equipment (Department of the Chief Design Engineer of Scientific and Engineering Center), e-mail: ogkpsdt@belaz.minsk.by

Zuenok A. S., Head of the Bureau (Department of the Chief Design Engineer of Scientific and Engineering Center), e-mail: kbok@belaz.minsk.by

This article presents the whole lineup of the special-purpose machines for servicing of technological transport at open pits (towing vehicle tractors, watering and irrigating machines), road-construction equipment (front-end loaders, wheeled bulldozers), and concrete- pumping complex (stationary-trailer concrete pumps, distributing and dispensing hydraulic boom, high-discharge mixers). All these machines were produced by “BELAZ” JSC and Mogilev Automobile Plant, named after S. M. Kirov (Mogilev Automobile Plant). “BELAZ” serially produces the towing vehicle tractors, which makes it possible to tow the mine dump trucks with 30-360 t of payload capacity. There is presented an information about two types of new road-construction equipment. The first type is the concrete-pumping complex, which consists of the stationary-trailer concrete pumps and distributing and dispensing hydraulic boom. The second type are the highdischarge mixers. The stationary-trailer concrete pumps are used at the construction of high-level buildings in cases, when it is impossible to send the concrete mix by means of high-discharge mixer. The distributing hydraulic boom is used for sending the concrete mix feeding to the height and into the hard-to-reach areas. This operation is held during the construction of high-level buildings, made of the mix-insitu concrete and reinforced concrete; construction of bridges, tunnels, etc. Nowadays, high-discharge mixers are made with 4–10 m³ of useful capacity of blending drum. The high-discharge mixers, produced by Mogilev Automobile Plant, can be used both for preparation and delivery of concrete mix and for delivery of ready-mixed concrete, with directing it to the concreting object at above +5 С of ambient temperature. The low temperatures make it possible to obtain only the dry mix preparation without the servicing of power supply system. There are given the basic technical characteristics and information about the basic structural improvements of open pit equipment.