Mining Institute of Transbaikalia State University (Chita, Russia):

Lizunkin V. M., Head of a Chair, Professor, Doctor of Engineering Sciences, e-mail: prmpi_chitgue@mail.ru

Gavrilov A. A., Assistant Professor, Candidate of Engineering Sciences

“Priargunsky Industrial Mining and Chemical Union” JSC (Krasnokamensk, Russia):

Morozov A. A., Head of Central Research Laboratory, Candidate of Engineering Sciences

This article gives the mining-geological and mining engineering peculiarities of development of poor uranium veins. On the basis of the carried out researches, there were recommended the process flowsheets of underground leaching of ores, according to the dip and strinke complexity of veins. Taking into account the maximal excavation completeness and impoverishment minimum, there were defined the rational values of the depth of blast holes and minable width. As a result of analytic researches, there was established the ratio between the obtaining costs of average weighted prill size and acchievement of project uranium extraction from this prill at the level of 65–70%. There was also established the area of efficient application of underground leaching technology of poor uranium ores in low-powerful steeply dipping bodies.

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