Using data on 3117 rats exposed by inhalation to radon, radon progeny and uranium ore dust, the hazard function (or age-specific risk) for lung tumor incidence was modeled as a function of exposure, exposure rate and other factors. The overall estimate of lifetime risk was 237 cases per 10(6) rats per WLM (237 per 10(6) WLM), reasonably comparable to estimates obtained from data for humans. The...

The mining and export of uranium and the impacts (and risks) of the nuclear industry have long been a contentious issue in Australia. The ongoing debate primarily relates to the established and potential dangers of ionizing radiation released to the environment from nuclear facilities, such as uranium mines or research reactors. By 2002, three uranium milling projects are operating with a furth...

The article provides information on mineralization of the Ustuk mineral field with uranium and other rare metals.The distribution radioactive elements in rocks was studied studies. As a result research, it found that uranium-rich vanadium secondary minerals carnotite-tyuyamunite series were formed. Also, primary earth enriched metamorphic quartzization front. A favorable environment (geochemica...

To produce nuclear fuels, it is necessary to convert uranium′s ore into UO2-ceramic grade, using several quantities of kerosene, methanol, nitric acid, ammonia, and, in low level, tributyl phosphate (TBP). Thus, the effluent generated by industries one most toxic since contains high concentrations dangerous compounds. This paper explores biological parameters on real wastewater Monod model an O...

Uranium-containing glass samples with an age of 140–145 million years were collected within the volcanic rocks largest volcanic-related uranium ore deposit in world. Main features their composition are high concentrations silica and uranium, for this type. In contrast to this, ages fresh (unaltered) low-silica natural glasses a basic (basalts) usually do not exceed few years. The is unstable at...

The origins and near-surface distributions of the ~250 known uranium and/or thorium minerals elucidate principles of mineral evolution. This history can be divided into four phases. The first, from ~4.5 to 3.5 Ga, involved successive concentrations of uranium and thorium from their initial uniform trace distribution into magmatic-related fluids from which the first U4+ and Th4+ minerals, uranin...

Nuclear fuel cycle workers are exposed to a variety of hazardous materials. Uranium processing is one of the stages of the nuclear fuel cycle and, together with uranium underground mining, employs the largest number of workers, with much smaller groups of workers involved in uranium enrichment and reprocessing and reactor operation. To date, epidemiological studies of uranium underground miners...

Heterogeneous pyritaceous-polymetallic and copper-zinc-pyrrhotine deposits on the South slope of the Greater Caucasus are located in the Lower-Middle Jurassic terrigenous sediments. They were formed under a wide variation of physico-chemical parameters of mineral formation and are characterized by specific mineralogical-geochemical peculiarities. Ore-formation occurred in three stages. In the f...