United States Lime & Minerals, Inc. is a manufacturer of lime and limestone products headquartered in Dallas, Texas, operating quarries, mines, and production facilities across six states with wholly owned subsidiaries. The company extracts high-calcium-carbonate limestone and produces processed products including crushed limestone, pulverized limestone, quicklime, hydrated lime, and lime slurry, which it sells to approximately 675 customers across nine states for diverse end-markets including construction, industrial, environmental, metals, agriculture, and oil and gas applications. The company generates revenue through direct sales and competitive bids, distributing products primarily by truck and rail within approximately 400 miles of its plants, competing on price, quality, service, and delivery while holding significant limestone reserves and benefiting from high barriers to entry in the regionalized lime industry.