Section 61(10)(e) in The West Bengal Factories Rules, 1958
(e)[ The exits shall be clearly visible and sufficiently illuminated with suitable arrangement by such artificial lighting, as is needed to be adopted for this purpose, to maintain the required illumination in case of failure of the normal source of electric supply.] [Substituted by W. B. Factories (Amendment) Rules, 1991 dated 27.11.1991]