State Enterprise «Navoi Mining and Metallurgical Combine» (Navoi, Republic of Uzbekistan):

Malgin O. N., Deputy Chief Engineer of Navoi Mining and Metallurgical Combine in 1984–2009, Doctor of Engineering Sciences, e-mail: malgin.oleg@gmail.com

Larionov E. D., Head of Mining Bureau of Central Research Laboratory in 1991–2009

State Research, Constructor and Design Institute of Coal Industry «UkrNIIproekt» (Kiev, Ukraine):

Shelepov V. I., Chief Specialist, Candidate of Engineering Sciences

Since 2007, experimental exploitation of high-angle conveyor loader (mined rock lifting height of 30 m) has been carried out at Muruntau deep open pit of Navoi Mining and Metallurgical Combine. For the purpose of ore transporting, the high-angle conveyor elevator was designed with its following installation at the pit edge on the basis of positive experience of this loader functioning. Productive capacity of this elevator is 3500 t/hour, and its united flight deeping is 270 m. The elevator is continued by the main conveyor line on the surface. This line delivers ore to the load-store facility of enterprise. Industrial exploitation of the whole complex of equipment has begun since June 21, 2011. Since then, this complex has been successfuly functioning: its technical production capacity has been already increased. According to this, mined rock motor transportation consumptions were significantly decreased. Designing of open pit's transport system on the basis of high-angle conveyor was carried out by institute «UkrNIIproekt». The complex of equipment was manufactured by Novokramatorsky Mashynobudivny Zavod (Ukraine). Building and assembly jobs were carried out by forces of Navoi Mining and Metallurgical Combine.

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