of which must have been in bonding work including the operation of a pressure furnace, or two years of Bell Material Bonder B or Material... Bonder – I classification experience or one year Bell Material Bonder B experience combined with one year metal fitting...
of which must have been in bonding work including the operation of a pressure furnace, or two years of Bell Material Bonder B or Material... Bonder – I classification experience or one year Bell Material Bonder B experience combined with one year metal fitting...