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The Illuminating Engineering Research Institute and illumination levels currently being recommended in the United States.

NIOSH 1975 Mar; :17-27
The position of the Illuminating Engineering Research Institute (IERI) with respect to the recommended levels of illumination was reviewed and defined. The main topics of the research carried out by IERI were outlined in terms of the task, the amount of light required by a given task, veiling reflections in offices and schools, brightness differences, discomfort glare, pleasantness of interiors, older and subnormal eyes, light and heat, biological effects, and visual task evaluator. Evaluation studies were carried out to determine the amount of light necessary to create an adequate and safe environment in the glass container industry, miniature electronic circuit industry, rubber industry, dairy farms, poultry and egg processing industry, atomic power generator plants, roadways, hospital surgical rooms, aircraft maintenance plants and steel mills. Practical demonstrations were carried out to determine methods for the conservation of light energy in offices by studying the actual work layout. In most instances, the architects were not to blame for the original lighting arrangements because they did not know enough about the intended use and work layout of the building. The author recommends that the architects or engineers return to the scene a few months after the completion of the building to arrange the light switching system according to the visual work being carried out.
Lighting-systems; Standards; Eyesight; Human-factors-engineering; Accident-prevention; Safety-measures; Health-hazards; Occupational-health; Visual-perception
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The Occupational Safety and Health Effects Associated with Reduced Levels of Illumination. Proceedings of a Symposium, July 11-12, 1974, Cincinnati, Ohio, NIOSH, Division of Laboratory and Criteria Development, HEW Publication No. (NIOSH) 75-142