Introduction: Noise is a common pollutant in the workplace, particularly in the mining sector, which uses equipment that generates noisy environments. The aim of this study was to assess the occupational noise exposure of workers at a mining company in Senegal. Methodology: This was a retrospective, cross-sectional, and descriptive study that covered data recorded from May 2, 2016 to December 31, 2020. Results: A total of 393 noise exposure points were measured, with 17.6% exceeding 85 dB. The power plant was the noisiest area, with 53.8% of measurements exceeding 85 dB. Individual measurements of 51 workers in similar exposure groups (SEGs) from each department showed daily average exposure values ​​ (AELs) ranging from 55 dB in the SEG of WCP control room operators to 109 dB in the SEG of power plant electricians. Instantaneous noise exposure values ​​ (peaks) ranged from 115 dB in the WCP mechanics’ Similar Exposure Group to 143 dB in the MSP maintenance workers’ Similar Exposure Group. 85.6% of respondents had at least 5 years of service. Hypertension (4.9%) and moderate hearing loss (0.7%) were also recorded. Conclusion: Noise pollution is a reality at the Grande Côte Opération (GCO) mine. However, the technical and organizational measures implemented by the company have helped to reduce its harmful effects on workers’ health.

Objectives: To identify occupational risks factors in the artisanal dyeing factories of Bamako and to propose appropriate preventive measures. Equipment and methods: This is a prospective and descriptive study conducted over a period of 6 months, from April to September 2014, among dyers in Bamako. The study instrument was a 24-item questionnaire on socio-professional characteristics and data analysis was performed by the Epi Info software, version 6.4. Results: Our study population was 100 dyers with a sex ratio of 5.67 in favour of women (17 women for 3 men). The average age was 31.9 years with extremes of 15 and 70 years. Married people were in the majority with 70% and 38% of the dyers had between 1 and 3 children. The dyers were enrolled in school in 44% of cases, 30% of which were in Arabic. Soakers were more numerous with 43%, followed by rinsers 28% and blenders 15%. The majority had no professional qualification, i.e. 94%, and 48% had more than 5 years of experience in the profession. The main risks were repetitive movements and manual handling 100%, noise 98%, lack of lighting 96%, chemical risks 94%, dermatological risks 93%, falls on the same level 74%, puncture wounds 66%, lack of PPE 38% and musculoskeletal disorders 76%. Conclusion: Our study shows the diversity of occupational risks present in the craft sector, hence the urgent need to regulate this sector and implement an effective prevention policy.