.-Every shelter shall-(a)have a floor area of not less than [14 square metres] [ Substituted by G.S.R. 31, dated 29.12.1960.]; and(i)[ in the case of a flat roof, a height of not less than 2.5 metres to the lowest part of the roof; and [Substituted by G.S.R. 31, dated 29.12.1960. ](ii)where the roof is a sloping one, a height of not less than 1.8 metres to the lowest part of the roof and not less than 2.5 metres to the highest part of the roof;](b)be so constructed as to afford effective protection from the weather;(c)be constantly provided with as adequate supply of cool and wholesome drinking water during the working hours of the mine;(d)be kept in a clean and tidy condition.
