The city of Atlanta, Georgia, in Fulton County, was an important rail and commercial center during the American Civil War. Although relatively small in population, the city became a critical point of contention during the Atlanta Campaign in 1864 when a powerful Union army approached from Union-held Tennessee.
Rare-earth compounds containing lanthanum are extensively used in carbon lighting applications, especially by the motion picture industry for studio lighting and projection.
Vanadium is an element that occurs in nature as a white-to-gray metal compounds, and is often found as crystals. Pure vanadium has no smell. It usually combines with other elements such as oxygen, sodium, sulfur, or chloride.Vanadium and vanadium compounds can be found in the earth's crust and in rocks, some iron ores, and crude petroleum deposits.Vanadium is used in producing rust-resistant, spring, and high-speed tool steels.Vanadium pentoxide is used in ceramics, as a catalyst, and in the production of superconductive magnets. Vanadyl sulfate and sodium metavanadate have been used as dietary supplements.anadium is used in producing rust-resistant, spring, and high-speed tool steels. Vanadium pentoxide is used in ceramics, as a catalyst, and in the production of superconductive magnets. Vanadyl sulfate and sodium metavanadate have been used as dietary supplements.