[Clinico-roentgenological and occupational correlations as a method of revealing the dose-effect dependence in the development of chrysotile-asbestos fibrosis].

: For understanding up-to-date situation with fibrosis caused by chrysotile-asbestos, the authors conducted X-ray and hygienic studies in 2 enterprises extracting and enriching asbestos--"Tuvaasbest" JSC and "Orenbourgasbest" JSC. Authors followed correlation between diffuse pulmonary changes and length of service, dust load and cumulative exposure dose of respirable fibers. The strongest correlation was demonstrated for dust load. Workers engaged into up-to-date industry extracting and enriching asbestos are diagnosed as having indistinct and moderate roentgenologic types of fibrosis. Examples of dose-effect dependence prove dust load to be informative and expedient integral parameter for hygienic regulation and evaluation of asbestos-containing dust and industrial aerosols doses.