The Koppers Company’s main businesses
were architectural and construction materials, plastics, chemical
and coatings, engineering production, environmental control systems,
engineering and construction.
The Koppers Company was one of the world’s
largest producers of industrial piston and sealing rings and flexible
couplings. (The American Hammered Piston Ring Co., was a subsidiary
of Barlett Hayward when it was purchased by Koppers in 1928.)
The Koppers Company was the world’s leading
contractor in the design and construction of basic oxygen steel
making plants. One-third of all basic oxygen furnace capacity in
the U.S. was designed by Koppers.
The Koppers Company had built more than 120 blast
furnaces throughout the world, about one-eighth of the world’s
capacity in 1970. Equipment supplied by Koppers Company is installed
in 99 percent of all U.S. blast furnaces.
In 1944, the combined production of all of the
Koppers Company byproduct coke plants was 4.5 million tons per
year, about seven percent of the coke production in the U.S.
In 1970, the Koppers Company was the nation’s
largest producer of coal-based chemicals. It had 125 plants in
32 states, more than 13,000 employees and about 17,000 stockholders.
With 125 major products, it was among the 250 largest industrial
companies in the U.S.
Today, at the "new" Koppers, we continue to be
the leaders in the industries of the old Koppers Company that we
acquired.
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