Rolled aluminum sheet made from 57S 1/2H is employed; design, fabrication and testing.
Use of aluminum for lighting towers at railroad switch yard in Biel, Switzerland
Tours d'eclairage en aluminium
Aluminium Suisse ; 4 , n 1 ; p 8-14
1954
7 pages
Article (Journal)
French
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Lighting railroad yards with projectors installed on high towers
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