1. Steel — 2021-08-12 20:31:45

   …ntensive. {{TOC}} == Before Steel == Before cheap steel wrought iron was used for construction. The furnaces heated molten iron, it was then stirred by puddlers using long oar-shaped tools, allowing oxygen to combine slowly remove carbon. {{I…

2. Float Glass — 2020-12-08 00:24:27

   …kingtons process == Pilkingtons new process works by floating a piece of glass that has been rolled flat onto a bath of molten tin. The molten glass then flows unhindered under the influence of gravity maintained at a high temperature so the glas…
   …lass company in the world. Alastair Pilkington was honoured with a knighthood in 1970. {{Tag ids="Glass float furnace molten tin "}} …

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