A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Points out that good illumination is one of best safety precautions against accidents in coal mines and good illumination with minimum risk means closed lights.
Points out that good illumination is one of best safety precautions against accidents in coal mines and good illumination with minimum risk means closed lights.
Closed light in coal mines
Modern Min
Virgin, R.Z. (author)
Modern Mining ; 3
1926
2 pages
Article (Journal)
English
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Illumination by light projectors at coal mines
Engineering Index Backfile | 1923
| Engineering Index Backfile | 1922
| Engineering Index Backfile | 1925