Practical experience of the acid and bacterial underground leaching of uranium at the Semizbay field

The discovery and investigation of the uranium field Semizbay are considered. The main parameters of lithological filtration inhomogeneity as well as geotechnological properties of the ore-bearing rocks are defined in terms of their influence on the borehole underground leaching of uranium. Works on the acid-bacterial underground leaching of uranium give positive results on two experimental cells. Carbonate ores have not significant influence on the process of the underground leaching.