New shelters which Ministry of Home Security is completing underneath sections of underground railway system make provision for furnishing duplicate supplies of power; shelters are situated 40 ft immediately beneath railway, or 100 ft below ground level. (see also Elec Times v 102 n 2657 Sept 24 1942 p 446 and 455)
Deep shelters
Elec Rev
Electrical Review ; 131 , n 3386
1942
4 pages
Article (Journal)
English
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Engineering Index Backfile | 1942
Online Contents | 2004
NTIS | 1973
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