Origin of open-hearth
Examples from the Web for open-hearth
Open-hearth steel is an important manufacture in Birmingham.Commercial Geography|Jacques W. Redway
I looked over at the eight stacks of the open-hearth, closed my eyes, and saw Seven tapping.
Of the fifty-six open-hearth and other steel furnaces contemplated in the original plan, forty-seven have been completed so far.United States Steel|Arundel Cotter
They may be either Bessemer, open-hearth, or crucible steel.
I entered the open-hearth mill by the tracks that ran close to the furnaces.