Ships fabricated by welding; cutting with blowpipe.
Oxy-acetylene blowpipes extensively used for ship work
Mar. Eng. Ship. Age
Marine Engineering and Shipping Age ; 31 , n 6 ; p 350-351
1926
2 pages
8 Figs.
Aufsatz (Zeitschrift)
Englisch
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Spring switches used extensively on Chicago and north western
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