The results of the examination of employees realizing the exploitation of the Severomuiski distance of railway in serving of the tunnels of the East-Siberian railway concerning studying the state of mineral bone tissue density are presented in this paper. Examined patients (66 men) were divided into two age groups — up to 50 years old. and. older than 50 years old. The double-energetic x-ray absorptiometry (osteodensitometry) was performed. The reduction in the mineral bone tissue density was found to be in both studied groups.

Workers (men) at Severomuyskiy tunnel – 31 workers aged from 24 till 55 years are surveyed. The middle age was 42,5±1,6 years, middle age of training – 11,8±1,1 years. In group of tunnel workers contacting to a complex of adverse factors, were registered: expressed in 19,3±3,2%, moderate – in 64,5±6,5% and light in 16,2±2,9% cases the diffusion changes in EEG. For trained tunnel workers low-amplitude EEG with moderated and expressed diffusion changes in a type of irregularity α-rythm, strengthenings of expressiveness of slow and wave activity, mainly δ-range, existence of pathological center of various localization and signs of stem structures interest is characteristic.