Further new plant was added over the next decade, including a billet mill and three open hearth furnaces.
12.
The nation with the highest share of steel produced with open hearth furnaces ( almost 50 % ) is Ukraine.
13.
Carnegie made major technological innovations in the 1880s, especially the installation of the open hearth furnace system at buggies.
14.
By the end of the 19th century the Bessemer process was displaced by the open hearth furnace ( OHF ).
15.
In the US, steel production using the Bessemer process ended in 1968 and the open hearth furnaces had stopped by 1992.
16.
"' Steel was made for the first time in India "'in 1904, in open hearth furnaces.
17.
In 1910, a sixth open hearth furnace was built, and a 14 band mill was added to the production line.
18.
The blast furnaces and open hearth furnaces generated huge quantities of airborne particulates that coated every surface inside and outside of homes and buildings.
19.
Armco Steel closed the plant because they did not want to replace the obsolete Open Hearth Furnaces with the more efficient basic oxygen steel furnaces.
20.
The "'AJAX furnace "'was a modification of the tilting open hearth furnace that used blown oxygen to improve productivity.
