USLM vs IRDM Comparison

United States Lime & Minerals Inc is engaged in the business of manufacturing lime and limestone products including PLS, quicklime, hydrated lime and lime slurry. It supplies its products predominantly to the construction (including highway, road, and building contractors), industrial (including paper and glass manufacturers), environmental (including municipal sanitation and water treatment facilities and flue gas treatment processes), metals (including steel producers), oil and gas services, roof shingle manufacturers and agriculture (including poultry and cattle feed producers) industries. The company operates through its Lime and Limestone Operations segment.

Iridium Communications Inc is the commercial provider of communications services offering true globalised coverage, connecting people, organizations and assets to and from anywhere, in real time. The company is a provider of mobile voice and data communications services through a constellation of low earth-orbiting satellites. Iridium's solutions are ideally suited for industries such as maritime, aviation, government/military, emergency/humanitarian services, mining, forestry, oil and gas, heavy equipment, transportation, and utilities. Iridium also provides service to subscribers from the U.S. Department of Defense, as well as other civil and government agencies world-wide. The Company operates in one business segment, providing satellite communications services and products.