The glass plate on a car's windshield has an ingredient added to ordinary glass to turn it into safety glass. The glass is constructed with two separate layers, something like a sandwich. Between each layer of glass there is a plastic filler that joins them in a process called lamination.
Even if the outer layer of glass were to break, the inner plastic layer would simply extend due to its elasticity, and keep the broken glass pieces together.
Fire glass with wire is a safety glass with a wire net between two layers of glass. It can withstand fire, and not break easily. Many schools and factories use this type of wired glass.
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