Read more: The Best Concrete Repair Products On The Market (And 4 To Skip) Cement is quite a complicated material, typically made with bauxite, gypsum, limestone, sand, and a few other ingredients.

Gypsum is mined and used for many purpose including making concrete, drywall and several other building materials. In 1965, USG sold the land above the old mines to the Ohio Department of ...

It operates through the following business segments: Cement, Concrete and Aggregates, Gypsum Wallboard, and Recycled Paperboard. The Cement segment deals with the manufacture, production ...