106 THE BELL SYSTEM TECHNICAL JOURNAL, JANUARY 1957 



outside atmosphere. Two separate air conditioning systems were in use. 

 One, of 300 tons capacity, provided for most of the plant, while a smaller 

 unit of 30 tons capacity served the capacitor winding, testing, and im- 

 pregnating rooms. Each installation had its own air filtering and condi- 

 tioning equipment. 



Plant Layout 



The plant layout is illustrated in Fig. 1. All working areas, with the 

 exception of the repeater enclosure area, were individually enclosed, 

 and walls from approximately four feet above the floor were almost 

 entirely of reinforced glass. This arrangment facilitated supervision by 

 other than first-line supervisors, who were located with the groups, and 

 provided a means of viewing the operations by the many visitors at 

 Hillside, without contaminating the critical areas or disturbing the 

 operators. 



Analysis of Design for Facilities and Operations 



In analyzing the design for manufacture there were, of course, numer- 

 ous instances where conventional methods and facilities were entirely 

 adequate for the job. Since their inclusion would contribute little to this 

 article, we shall confine the description to those cases which are new or 

 unusual. 



Collaboration with Bell Telephone Laboratories in Preparation of Manu- 

 factoring Informatio7i 



Early in 1953 a coordination committee was established, consisting 

 of representatives from the various Laboratories design groups and 

 Western engineers, which met on a bi-weekly basis during the entire 

 period preceding initial manufacturing operations. These meetings 

 provided a clearing house for questions and policies of a general nature 

 for this particular project and served to keep all concerned informed as 

 to the progress of design and the preparations for manufacture. 



It is customary, during the latter stages of development of any project 

 at the Laboratories, for Western engineers to participate in the prepara- 

 tion of manufacturing information as an aid in pointing the design to- 

 ward the most economical and satisfactory production methods and 

 facilities. Since the decision to use the Bell System repeater in the Trans- 

 atlantic system was based on the performance of the Key West-Havana 

 installation, and the fact that changes in design would require further 



