4 particularly noisy occupations
- the use of power driven grinding, chiselling, cutting or percussive tools on rocks, concrete or marble, or work wholly or mainly in the immediate vicinity of those tools whilst they are being so used;
- the use of, or work wholly or mainly in the immediate vicinity of, machines engaged in percussive pile or metal plank driving on construction sites;
- work wholly or mainly in the immediate vicinity of abrasive blasting operations; or
- work wholly or mainly in the immediate vicinity of gun-firing operation.