G.R.Averall 2017

General Asbestos Photos

Asbestos sheild

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Asbestos sheild
Circa 1937: Expert glass blower behind an asbestos shield, applying heat of 1,800 degrees to fuse a rod of quartz which is a non-conductor of heat & is used chiefly for ultra violet lamps, at the American Assoc. for the Advancement of Science meeting.
Posted on January 9, 2011 Slideshow

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