Figure A-1. Flat acrylic disc windows prior to implosion testing. The impacted window 
on the left is monolithic, while the impacted window on the right is of 
laminated construction. 
Figure A-4. Flat acrylic disc windows after implosion testing; low pressure faces. 
A — non-impacted laminated window 
B — impacted laminated window 
C — non-impacted monolithic window 
D — impacted monolithic window 
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