Working conditions of employees of mining enterprises are characterized by class 3 (harmful) 2–4 degrees, which determine the level of occupational disease. T e highest rate of occupational morbidity (111.2 cases per 10 thousand workers who have undergone periodic medical examinations) occurs in mine workers, and it is signif cantly higher than in quarry workers. In underground workers in the structure of occupational disease, the f rst place is occupied by diseases of the bronchopulmonary system (30.1%), in quarry workers — vibration disease (48.3%). T ese enterprises have shown an increasing trend in recent years of deaths in the workplace, mainly from diseases of the cardiovascular system.

The digital transformation of the economy and society prompts the renewal of methods in occupational health as well. There are outlined fundamentals of the draft revision of the “Guidelines for the Assessment of Occupational Risk to Employee Health. Organizational and methodological foundations, principles and criteria for the assessment». R 2.2.1766-03. The draft contains methods of occupational risk (OR) assessment supplied with information materials and software for working on the Internet in real-time. Algorithms and models for calculating the probability of impairment of health according to data of the Special Assessment of Working Conditions (SAWC) as well as causation algorithms - work-relatedness assessment according to data of periodic medical examinations (PME) for the validity of risk assessment from the standpoint of evidence-based medicine are presented. There are set out methods for calculating the probability of the formation of occupational diseases (OD) of the main nosological forms from the exposure of noise, hand-arm and whole-body vibration, heat and cool microclimate, fibrogenic dusts, physical labor (local, regional and general loads), strenuous work, standing work with the likelihood of varicose lower veins limbs, multi-factor exposure and low-back pain. Risk assessments for the reproductive health of workers are also discussed. The models are based on the documents of the WHO, ILO, ISO, domestic and foreign literature data that meet the principles of evidence-based medicine. The problems of work-related diseases (WRD) - the concept of WHO (1987) -basics of etiology, qualitative and quantitative criteria for causation, models of consensus and evidence-based medicine, as well as projects for integrated work on the detection systems for WRD in the European Union countries are considered. Single-digit indices of working conditions and health problems, moral harm caused to an employee suffering from OD or WRD. Hygienic recommendations to employers on OR management, prevention priorities, the role of personal protection equipment, the basics of corporate health promotion programs, and ethical and economic aspects are described. The calculation methods are provided by the software of the electronic online reference book “Occupational Risk” (URL: http://medtrud.com/) in order to ensure evidence-based decisions of hygienists. In conclusion, a turning point in occupational health is noted: a decrease in the detection of traditional ODs without compensation by the number of OD and WRD from new technologies, materials and risk factors; this problem requires urgent action.

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Introduction. Revision of the "Guidelines for the hygienic assessment of factors of the working environment and the labor process. Criteria and classification of working conditions" R 2.2.2006-05 determined the relevance of improving hygienic criteria and classification of working conditions, including noise, based on a risk-based approach. The study aims to substantiate risk-oriented hygienic criteria and classification of working conditions by noise, taking into account the group attributive (excessive) risk of hearing loss. Materials and methods. The researchers carried out an expert-analytical study and calculations of the attributive risk of hearing loss under the influence of noise. The authors used a technology (ARHL) according to the model of the third edition of the ISO 1999 standard. We performed the calculation of ARHL using several variants of the average values of hearing thresholds at various combinations of audiometric frequencies. Results. Scientists have substantiated a risk-oriented criteria and classification of working conditions depending on noise levels, taking into account the equal energy rule (q=3) and the data of the group attributive risk of hearing loss. Conclusion. We substantiated a risk-oriented hygienic criteria and classification of working conditions by noise, harmonizing the hygienic assessment of the noise risk factor with international practice. Ethics. In preparing the article, the authors guided by the Ethical principles of medical research set out in the Helsinki Declaration of the World Medical Association of the last revision. Limitation of studies. There are the features of the model for assessing hearing loss due to noise exposure according to GOST R ISO 1999:2013.

Introduction. Prevention of occupation hearing loss should be based on mathematical models and computational methods to predict changes in hearing thresholds (HT) with age and under the action of noise on the hearing organ. There is an urgent need for quantitative methods to determine the health risk of exposure to noise above 80 dBA.The aim of the study was to determine the group excessive risk of hearing loss (ERHL) under the action of noise using the model of the third edition of ISO 1999.Materials and methods. Developed technology for the determination of the HT model, the third edition of ISO 1999, depending on the gender, age, length of service and experienced noise exposure on the basis of the related sett lement tables MSExcell for population percentiles 1 to 99% in 1% step. Results. With the use of the developed technology, the initial data were determined and the main indicators of the group risk of hearing loss at the levels of criteria for the diagnosis of sensorineural hearing loss (SNT) were calculated. Th eir dependences on age, length of service and noise level are calculated.Conclusions: Th e developed technology allows us to calculate the probable hearing thresholds of the quantile of the population exposed to and unaff ected by noise and the magnitude of the group excess risk.