LTV Steel owns a 53.5% interest in Presque Isle Corporation of Alpena,
Michigan, which operates a limestone quarry in Stoneport, Michigan, on
Lake Huron. It is one of the top five producers in North America, serving
the midwestern metallurgical and construction markets.
LTV Steel operates a burnt lime plant at Grand River, Ohio, which processes
limestone from Presque Isle and other sources into a variety of burnt
lime products. In addition to its captive market, Grand River also serves
the expanding steel desulfurization market, as well as water treatment,
agricultural, sewage treatment and land stabilization markets.