Show electricity aud and steel melling electricity in tile the iclal production of steel by use lisa of the electric furnace furn nce Is used almost wholly bolly BI be a source of heat beat rather than for tiny any direct chemical action slid a nl tile the steel hleb rehulita Is as a a rule purce of higher quality than that usually obtained through other pro processes cesmes of all factors facton in the progress of shaping steel into usable cross sett lond the invention of the rolling mill by cort bome time in ito IB eighteenth cin tury RI as the most important corts idea wag as that ettel could be squeezed loto into shapes bet berneen con rollen while bile tt it was still HUH hot an aal I 1 from his idea grew the roll ing mill industry bah ellch lu in tile the mutts prodie prod icis cs about 21 tons toni of product for emery ton of that li Is ludde W cao tribune |