SPECTROCIIEMICA L A NA L YSIS 



385 



jAT FRACTURE 

 FLEXIBLE PORTION 



Fig. 1 — Field complaint on failure of zinc straps for supporting aerial cables. 



MpHWMIini 



Aa Pt 



■■■■■■iniin 



pininiiiiiiiinni 



Fig. 2 — Identification of contact alloys. 



%S102 

 I 0.25 



Fig. 3 — Silica in beryllium oxide and aluminum oxide. 



