Vulcan Materials Company is a company that supplies important materials used in construction. They provide things like crushed stones, sand, and gravel, which are needed to build roads, houses, and other buildings. They also make asphalt for paving roads and concrete for various construction projects. Additionally, they produce calcium products used in animal feed and other industries. Founded in 1909 and based in Birmingham, Alabama, Vulcan Materials plays a key role in helping build and maintain infrastructure across the United States.