as foreign steel imports outpaced domestic production. Its overall population plummeted from 180,000 people in 1960 to less than half that number today - and around 10,000 buildings now lay abandoned.

Iron is the main ingredient in various forms of iron and steel ... used structural metal. Its great strength and affordability allowed craftsmen to construct sturdier bridges and higher buildings.

Part of the Daniel Carter Beard Bridge's steel structure is said to have been ... It was named after the founder of the Boy Scouts of America, who was born in Cincinnati. The bridge is 2,100 ...

However, cross-laminated timber (CLT), a building material that is becoming more common, is designed to be fire resistant and unlike steel, remains more structurally stable when subjected to high ...