66 



BELL SYSTEM TECHNICAL JOURNAL 



with the growth in requirements of the telephone construction and 

 maintenance organizations in handling their steadily increasing 

 activities. 



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Year 



Fig. 19 — Curve Showing Growth of Motor Vehicle Fleet in Bell System 



From the foregoing it will be noted that a period of 40 years has 

 witnessed a striking development in transportation and associated 

 equipment as applied to telephone construction work, and studies 

 now under way indicate that there is yet much to be accomplished. 



In a future issue will be discussed the adaptation to telephone work 

 of the more important items of labor saving machinery such as pole 

 derricks, trailers of various types, earthboring machines, air com- 

 pressors and compressed air tools, etc. 



