▁company ' s ▁production ▁facilities ▁in ▁A skim ▁and ▁St j ø rd al . ▁Gla va ▁emp lo ys ▁around ▁ 5 0 0 ▁people , ▁and ▁in ▁ 2 0 0 7 ▁had ▁a ▁re venue ▁just ▁short ▁of ▁N OK ▁ 1 , 5 0 0 ▁million . ▁ ▁The ▁company ' s ▁history ▁goes ▁back ▁to ▁ 1 9 3 5 , ▁when ▁industrial ist ▁J ens ▁Bull ▁was ▁offered ▁lic ensed ▁production ▁in ▁Norway ▁of ▁glass ▁w ool , ▁originally ▁a ▁German ▁in vention . ▁The ▁company ▁was ▁originally ▁called ▁" G lass v att ". ▁During ▁the ▁post - war ▁reconst ruction ▁of ▁Norway , ▁Gla va ▁grew ▁dram atically , ▁as ▁the ▁need ▁for ▁ins ulation ▁of ▁buildings ▁became ▁clear . ▁The ▁product ▁is ▁today ▁made ▁on ▁a ▁lic ence ▁from ▁the ▁French ▁company ▁Saint - G ob ain . ▁It ▁is ▁produced ▁from ▁bor os il icate ▁glass , ▁which ▁is ▁he ated ▁to ▁around ▁ 1 , 4 0 0   ° C ▁before ▁being ▁stretch ed ▁into ▁fib res . ▁ ▁In ▁ 1 9 5 9 , ▁the ▁company ▁was ▁responsible ▁for ▁the ▁so - called ▁" ice ▁block ▁expedition ", ▁later ▁called ▁" the ▁world ' s ▁greatest ▁public ity ▁st unt ". ▁The ▁expedition ▁consisted ▁in ▁bringing ▁a ▁three - ton ▁block ▁of ▁ice ▁from ▁Mo ▁i ▁R ana ▁by ▁the ▁Ar ctic ▁Circle , ▁to ▁Lib re ville ▁by ▁the ▁Equ ator , ▁without ▁using ▁any ▁form ▁of ▁re