Igor V. Bukhtiyarov
Izmerov Research Institute of Occupational Health
Russian Federation

31, Budennogo Ave., Moscow, Russia, 105275

Alaksandr G. Chebotarev
Izmerov Research Institute of Occupational Health
Russian Federation

Alexandr G. Chebotarev, leading researcher of laboratory of complex problems of the industry of
occupational medicine in leading industries, Dr. of Sci. (Med.)

31, Budennogo Ave., Moscow, Russia, 105275

Nikolay N. Courierov
Izmerov Research Institute of Occupational Health
Russian Federation

31, Budennogo Ave., Moscow, Russia, 105275

Oleg V. Sokur
Central Council of Mining and Metallurgical Trade Union of Russia
Russian Federation

5/6, Bolshaya Dmitrovka str., Moscow, Russia, 127994