US Lime & Minerals operates lime quarries, processing plants, and distribution facilities across the United States. The company manages four quarries and two mines, extracting approximately four million tonnes of limestone annually.

Lime has a diverse range of applications, with its largest single use in steel manufacturing, where it is essential for impurity removal. The construction industry is also a major consumer, as lime is a key ingredient in cement and asphalt production. Additionally, the enactment of the Clean Air Act in 1970 significantly increased demand for lime in flue gas desulphurisation, which has since become the second-largest market for lime in the United States.

The company serves approximately 650 customers, with lime and limestone products transported by truck and rail from the nearest production facility to ensure efficient distribution.