Society of Glass Technology · [Sheffield] · leaf 284
sh batchon blocks containing, in the one case, a high percentage of aluminaand in the other a high percentage of silica. Fig. 1 is a view of the tank furnace looking towards the workingend. The bridge was built of blocks which contained a relativelyhigh percentage of alumina as shown by the… … •> / Fig. 1.
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
