Skip to main content
Wednesday, November 11, 2026Nov 11

Buzzi Unicem USA’s Signal Mountain Cement Plant celebrates 100 years in business

Contributed photo / Luigi Buzzi cuts a cake celebrating his family's 100-year-old business, Buzzi Unicem USA's Signal Mountain Cement Plant.
Contributed photo / Luigi Buzzi cuts a cake celebrating his family's 100-year-old business, Buzzi Unicem USA's Signal Mountain Cement Plant. Contributed photo / Luigi Buzzi cuts a cake celebrating his family's 100-year-old business, Buzzi Unicem USA's Signal Mountain Cement Plant.

In the early 1920s, as Chattanooga began to develop into the 20th century, local businessmen set out to solve a pressing problem: they needed a local source of cement.

Their new idea soon became a new factory. On the Suck Creek side of the Tennessee River, under the foot of a then-quiet Signal Mountain, the Signal Mountain Cement Co. began production on Oct. 12, 1923.

Today, 100 years later, the facility is still producing.

Owned by the Buzzi family of Italy, the Signal Mountain plant — known as Buzzi Unicem USA — produces a staggering 930,000 tons of cement annually.

“There’s a good chance if you buy concrete in Chattanooga, you’re using our cement,” says David Puzan, plant manager.