[en] Peculiarities of metamorphogenetic uranium deposits distributed within the limits of ancient platforms in rocks of the early Proterozoic age are considered. A diagram of uranium deposits formation, stages of uranium ore-formation in metamorphism is shown. Metamorphosed (gold-uranium conglomerates) metamorphic (ferro-uranium, copper-uranium, rare-metal-uranium and other formations) and ultrametamorphic (pegmatoid, sodium-uranium and other formations) deposits are described and distribution patterns on all ancient platforms of the world are given. Main industrial types of uranium metamorphogenetic deposits (ancient uranium-bearing conglomerates, deposits of ''non-conformity''-type, uranium-bearing alkali metasomatites) and uranium-bearing provinces are enumerated. Uranium metamorphogenetic deposit distribution in main ore-localizing regional platform structures is shown

[en] The modern data on the technique of uranium underground leaching from ore bodies in-situ are presented. The general geological and hydrogeological conditions for organization of uranium underground leaching (UL) are pointed out. Uranium deposits where UL is applied are classified. The types of uranium deposits with the natural pore-crack permeability, crack permeability with stratum-like and stockwork ore bodies are considered in detail. Hydrogeologic conditions in the process of uranium leaching during of well development of ores with natural permeability are discussed