“attenuation” means the proven capability of hearing protectors to reduce the equivalent noise level to which the wearer thereof is exposed;
“building work” means work defined as such in regulation 1 of the General Administrative Regulations promulgated in terms of section 35 of the Act and published under Government Notice R. 2206 of 5 October 1984;
“dB (A)” means a unit of measurement of sound pressure level as contemplated in SABS 083;