2 8. TOPSIDE TELEPHONE 



Primary communication between topside and the sphere 

 while on the surface is through a two-way telephone system 

 which, in the past, was unreliable. The system was com- 

 pletely re-engineered, and has proved successful in recent 

 use. 



2 9. CAMERA BRACKETS 



Mounting the cameras in the sphere was difficult owing 

 to the makeshift arrangement. The new camera arrange- 

 ment consists of a trolley that holds both movie and still 

 cameras with tripod steadiness. When not in use, the 

 trolley can be moved well away from the window without 

 disassembling either camera. The two cameras presently 

 in use are a 16 -mm Arriflex movie camera with a 400- 

 foot magazine and a 12 0- size Hasselblad camera with a 

 12 -picture magazine. 



46 



