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Laser Barriers


        Any one out there have Barrier Threshold Limits for Plexyglass and 
Lexan in Watts/cm 2.
I am interested in protective barrier design for CO2 lasers 500 W Lens on 
Beam application
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Regards

Ian Fraser
Safety Office
University of Waterloo
200 University Ave. W.
Waterloo, ON.  N2L 3G1
1 (519) 888-4567 Ext 6268
Fax 1 (519) 746-5023

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