Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 70
e twyers, which are the pipesthat carry the hot air into the furnace. Theyhave copper nozl^s, and are made hollow so thatwater can keep circulating through them; other-wise the intense heat of the furnace would burnthem right out. But why does nt the furnace itself melt? Iqueried. It is made of… … THE UNLOADING MACHINES. Why, they dump it in at the top. Dont yousee that inclined elevator leading up to the top ofthe furnace? There goes a car of ore now. But there must be a furnace door somewhereto let the coal in, I persisted. Oh, no. In the first place, they dont use coal,but coke, which is…
Children's literature
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