the tube. The electronic components were ex- 

 tensively damaged by the water-battery electro- 

 lyte mixture and the pressure. After the current 



TIME 



meters passed the pressure test, a final check 

 was made by activating the meters and listening 

 for sequencing sounds with a stethoscope. 



POLYETHYLENE 



10 20 30 40 5 GO 

 LOAD AS A PERCENT OF ULTIMATE TENSILE STRENGTH 



Figure 5. Comparison of rope strength (Written communication from Columbian Rope Company). 



70 



