Studying of the main sources of radiation at the enterprise for production the rare metals ores

Radio-ecological researches in region of rare metal ore production with high content of natural radionuclides are executed. The main sources of internal and external radiation of employees at the enterprise are established. It is established that the gamma-phone on mine is at level 0,1-1,5 μSv/h and doesn't exceed normative value in the conditions of underground mining; integral values of specific alpha and beta activity of underground waters in separate reference points of mine exceeded normative requirements to potable water in 7 times and 2,1 times respectively. Radioactivity of underground water is caused by the content in rocks of uranium-238 (radium-226), thorium-232 and products of their disintegration. Concentration of radon in underground waters the settlement exceeded intervention level for it in 1,3 times. Use of underground water as the drinking can lead to padding radiation of the population.