Mr. Clark was a tall slender person, with glasses and an aspect of unfamiliarity with a blast-furnace environment.
In the blast-furnace all lead ores are successfully smelted.
Suddenly there was a rushing noise like an escape of air from some blast-furnace.
Through the quick sparks of fire I tried to watch the blast-furnace below.
It has been noted that the old type of blast-furnace gave off great quantities of combustible gases which became waste products.
On the blast-furnace the stove-tender pours the test and knocks it out of the mould.
This pours into them the molten cast iron which it has just received directly from the blast-furnace.
The blast-furnace rose in the eighteenth century and developed with the use of coke.
It was a Pittsburgh blast-furnace ten thousand times as big as all of Pittsburgh itself, belching fire and flames of sparks.
They were giant sparks flung from that blast-furnace which was booming and roaring behind Fuji.