United States Lime & Minerals, Inc.

The Lime and Limestone Operations manufactures lime and limestone products, supplying primarily the construction (including highway, road and parking lot contractors), metals (including steel producers), environmental (including municipal sanitation and water treatement facilities and flue gas treatment), oil and gas services, industrial (including paper and glass manufacturers), roof shingle and agriculture (including poultry and cattle feed producers) industries. The company is headquartered in Dallas, Texas, and primarily serves markets in the Central United States and consists of open-pit quarries and an underground mine, plants and distributions facilities owned by US Lime`s wholly owned subsidiaries: Arkansas Lime Company, Colorado Lime Company, Texas Lime Company, U.S. Lime Company, U.S. Lime Company — Shreveport, U.S. Lime Company — St. Clair and U.S. Lime Company — Transportation.