1. The Mining (Safety Occupational Health and Environment) Regulations 2010, 211(2).
2. The Occupational Health and Safety Act 2003, 5.
3. Hearing impairment among workers in a surface gold mining company in Ghana;Amedofu;Afr J Health Sci,2002
4. Hearing loss in white South African goldminers;Hessel;S Afr Med J,1987