Rocky Mountain Industrials, Inc. is a materials infrastructure and distribution company operating industrial assets in the United States, including minerals, materials, and services. The Company's segments include Aggregates and Rail Park. The Aggregates segment produces chemical-grade limestone for the aggregates market. The Rail Park segment includes land under development for a rail terminal and services facility. The Company has subsidiaries such as RMR Aggregates, Inc. and Rail Land Company, LLC. RMR Aggregates operates the Mid-Continent Quarry, producing chemical-grade calcium carbonate for local and regional customers. Rail Land Company is developing Rocky Mountain Rail Park, a rail-served industrial business park serving the Denver market. The Mid-Continent Quarry in Garfield County, Colorado, consists of approximately 44 unpatented mining claims controlled by the Company. It produces and sells approximately 21,578 and 26,356 tons of high-calcium limestone from the quarry.