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Underground uranium mine No 8 of Priargunsky Industrial Mining and Chemical Union reaches design capacity production
Since the start of mining the horizon 7D sinking of which was finished today 366 thousand tons of ore (705 t of uranium) will be mined here annually.
The horizon 7D was sunk from two sides – from the shaft 14B and 14 RESH. Works from the side 14RESH were carried out by the division No 3 of the Shaft-sinking division headed by Gennady Damaskin, and from the shaft 14B – by the division No 2 of Sergey Kiselev. Breakthrough took place today and the divisions met at the depth of 527 meters.
In total the divisions have covered 1960 meters in the main dip. The works were conducted under difficult geological conditions. To speed up bridging the horizon into service shaft sinkers were applying counter-stope mining. Compressed-air and service water lines, contact line were mounted along the horizon, cable lines were laid. Together with the main direction works for cross drifting and roadway driving for preparation for sinking of the new stopes were conducted. At the moment the horizon is started to be prepared for bridging into service.
“The new horizon has good production capacity which enables constant and rhythmic operation of the eighth mine. Uranium mining at 7D has started, units 8-701 и 8-706 are ready for service.” – says director of the mine No 8 Alexandr Rabolt.
It is worth mentioning that mining the horizon 7D is an important component of the project Reserves development optimization designed by the Shaft-sinking division of Priargunsky Industrial Mining and Chemical Union. Its idea is to increase the height of the level between the horizons at the mine No 8 up to 30 m, from 60 to 90 m. An effective opening system will allow reducing costs of the mine development by approximately 1.5 bln rubles. In future such system is planned to be applied at the mine No 6 with the height of the level of 120 m.
«Increasing the height of the level will allow to reduce timescales and costs of mine openings construction, consequently enabling well-timed preparation of actual mining works to implement a medium-term uranium ore mining program.” – explains chief engineer of the Shaft-sinking division Andrey Radchenko.