Figs.5,6,7,8.9,10,11,12,13,14,15,18,19,20, N.A.C.A. Technical Memorandum Mo.532 … near soft material. Pig,9 I Knives with corroded bands produced in London flood (1928). granular defect (50 dia.) Pig.18 Welded "T" Pig.15 Stainless alloys with bronze rings after 26 weeks in sea. tube 15^158 J^.5
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