Figure B-8. Post-implosion view of 

 specimen 1-1 (t/D^ = 0.024, sim- 

 ple support). 



Figure B-9. Fragments of failure 

 hole from specimen 1-1. 



Figure B-10. Post-implosion view of 

 specimen 2-1 (t/D^ = 0.037, free 

 support). 



Figure B-11. Post-implosion view of 

 specimen 2-2 (t/D^ = 0.037, free 

 support). 



59 



