Open-hearth steel

1.See under Open.
References in periodicals archive ?
The centre-piece of the project was a new open-hearth steel plant at Lackenby with a capacity of 10,000 tons of steel a week.
It is true, however, that, in modern economies, output levels may not be so rigidly constrained in the short run as they used to be when large segments of output were governed by facilities such as the old open-hearth steel furnaces that had rated capacities that could not be exceeded for long without breakdown.