Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Illumination by light projectors at coal mines
Need for greater application of advanced principles in correct illumination; hazards of poor lighting; function of reflector; focusing headlight.
Illumination by light projectors at coal mines
Need for greater application of advanced principles in correct illumination; hazards of poor lighting; function of reflector; focusing headlight.
Illumination by light projectors at coal mines
Coal Age
Coal Age ; 24
1923
4 pages
11 Figs.
Aufsatz (Zeitschrift)
Englisch
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Development of Illumination Systems for Low Coal Mines
| NTIS | 1976
| Engineering Index Backfile | 1894
| Engineering Index Backfile | 1926
Assessment of illumination in mines
| Engineering Index Backfile | 1952