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For Gorilla Glass Testers, Life Is a Daily Grind (and Scratch and Drop...)

Corning glass lab

Inside the labs, where a Corning engineer performs a puncture test on glass.

Credit: Ben Fox Rubin/CNET

Using extra-fine sandpaper (320 grit, to be exact), Corning scientist Kevin Reiman lightly rubbed the surface of a small, thin square of transparent sapphire crystal.

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