Analysis of information sources in references of the Wikipedia article "Tempered glass" in English language version.
The security value of tempered glass, however, is questionable. Although it will resist a brick or rock, it is susceptible to sharp instruments such as ice picks or screwdrivers. When attacked in this manner, tempered glass tends to crumple easily and quietly, leaving no sharp edges.
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: CS1 maint: archived copy as title (link) accessed February 28, 2015{{cite web}}
: CS1 maint: archived copy as title (link) accessed February 28, 2015