Society of Glass Technology · [Sheffield] · leaf 488
DXJD Fig. 16. FUELS, REFRACTORIES, AND FURNACES. 43 of the first type 4-5 m.x20 m. reached 1400° on 300 kw. andproduced 1500 kg. of glass per day, whilst one of the second type £ JL
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
