1. Health and Safety Executive. Noise at work regulation, statutory instrument no. 1790. London: HMSO, 1989.
2. The Council of European Communities, Council Directive of 12 May 1986 on the protection of workers from the risks related to exposure to noise at work. 86/188/EEC, 1986.
3. Directive 89/392/EEC, OJ no. L 183/9-32, 1989.
4. Health and Safety Executive. Noise at work. Noise assessment information and control. Noise Guides 3 to 8. London: HMSO, 1990. p. 3.
5. Wharton RK, Slater HJ. Further studies of the noise levels produced by fireworks. Pyrotechnica 1995;16:20–29.