Elimination of Asbestos-Related Diseases at the Bazhenovskoye Chrysotile Asbestos Deposit
80 years Yekaterinburg Medical Research Center carried out monitoring of dust levels and health effects at the worlds largest Bazhenovskoye chrysotile asbestos deposit. During this period established that all the technological operations of chrysotile asbestos mining and milling are accompanied by the formation of high-disperse asbestos-contained disintegration aerosols. All the identified fibres belonged to chrysotile asbestos. The analysis of dust content at the miners and ore dressing working places has proved to the fact that the concentration at the absolute majority of the working places in mines for the last 37 years (1970-2006) were at the level or below of Russian maximum allowable concentrations (RMAC)-4.0 mg/m3 and fibres concentration was 0.2 f/cm3. At ore dressing at the working places exceeded concentrations 2-3 times the RMAC (2.0 mg/m3) and fibres concentration was 1.8 f/cm3. Improvements of technological processes along with medical and preventive measures taken at the Bazhenovskoye deposit during the past 46 years (1960-2006) resulted in a 10 to 100-fold decrease in MAC concentrations and, therefore, in the lowering of asbestosis, lung and stomach cancer risks. From 1981 till 2006 only 8 mesotheliomas was diagnosis. The efforts to control the health hazards of various chrysotile dust concentration have focused on a strategy of clinical surveillance and controlling exposures yielding results that indicate controlled using. The experience obtained in the course of medical and hygienic studies carried out by Yekaterinburg Medical Research Center at Bazhenovskoye deposit may serve as a good basis for substantiation of safe allowable controlled application of chrysotile asbestos.
elimination of asbestos-related disease bazhenovskoye chrysotile asbestos deposit dust levels health effects
Kashanskiy S.V. Kovalevskiy E.V.
Yekaterinburg Medical Research Center for Prophylaxis and Health Protection in Industrial Workers, Yekaterinburg, Institute of Occupational Health of Russian Academy of Medical Sciences, Moscow, Russian Federation
国际会议
北京
英文
63-70
2008-10-29（万方平台首次上网日期，不代表论文的发表时间）