so there was a demand for steel called low background steel, which was made before the trinity tests. The Bessemer process pumps air through the iron to remove impurities. shropshirehistory.com ...

so there was a demand for steel called low background steel, which was made before the trinity tests. The Bessemer process pumps air through the iron to remove impurities. shropshirehistory.com ...

A businessman who was also an innovator, Carnegie was known for his success in the market. Using the Bessemer process at his Homestead Steel Works plant, he successfully made steel more cheaply and ...

What were Andrew Carnegie accomplishments? A major part of his influence lay in the establishment of several trusts or institutions that bear his name, such as the Carnegie Museums of Pittsburgh, the ...