How Millions of Construction Materials Are Made Inside Giant Production Line

How Millions of Construction Materials Are Made Inside Giant Production Line Did you know that every year, billions of tons of raw materials are transformed into the construction materials that build our roads, bridges, and cities — from cement and steel to glass, asphalt, bricks, and advanced composites? In this documentary, The Factoran takes you inside massive industrial production lines, where raw resources like limestone, sand, clay, and iron ore are extracted, processed, and engineered into the materials that shape modern infrastructure.