5.9.14 Lighting
1) As well as supplementing poor daylight and enabling work to continue after dark, site lighting is always necessary in those areas devoid of natural light, e.g. shafts and enclosed stairways. Apart from permitting men to see what they are doing, adequate lighting helps to minimize physical hazards; it facilitates the delivery and movement of material after dark; it is an effective deterrent to intruders, pilfers and vandals. In short it safeguards men, equipment and materials and makes for efficient, economic production.
But, site lighting must be sufficient, well planned, of the right type and in the right place for it to be properly effective.