A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Lighting conditions in mines, with special reference to the eyesight of miners
It is said that nystagmus is common in all safety lamp pits and rare in candle pits. Standard of illumination based on this fact is suggested of one-tenth of a foot-candle over whole working area. (See also - discussion p 80-102)
Lighting conditions in mines, with special reference to the eyesight of miners
It is said that nystagmus is common in all safety lamp pits and rare in candle pits. Standard of illumination based on this fact is suggested of one-tenth of a foot-candle over whole working area. (See also - discussion p 80-102)
Lighting conditions in mines, with special reference to the eyesight of miners
Illuminating Engr
Lister Llewellyn, T. (author)
1920
13 pages
9 Figs.
Article (Journal)
English
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IEEE | 1926
The Roman Gold Mines of Northwestern Hispania: Miners and Peasants
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