work including the operation of a pressure furnace, or two years Bell Material Bonder B or Material Bonder... – I classification experience or one year Bell Material Bonder B experience combined with one year metal fitting or forming experience...
work including the operation of a pressure furnace, or two years Bell Material Bonder B or Material Bonder... – I classification experience or one year Bell Material Bonder B experience combined with one year metal fitting or forming experience...