Quarried stone produced at the Rapid City Quarry in Rapid City, SD is primarily used for heavy and residential construction purposes. The Rapid City Quarry also produces feed stone for lime production at the Rapid City Lime Plant. Aggregates sold for construction purposes are primarily used in base and subbase layers as well as in asphalt concrete or Portland cement concrete. Many other uses for the material produced in Rapid City exist and new products can be produced based on the specifications
Quarried stone is produced near Livermore, Colorado. The products available include various sizes and colors of limestone, sandstone and dolomite. Products are sized for use in heavy or residential construction and landscaping. Color options include red, gray, tri-color, and "butter."
Gypsum is produced in Northern Colorado. Product sizes include 2"x3/16" and 3/16" minus. Gypsum produced by Pete Lien & Sons is primarily used for cement production or as a soil amendment.
A new gypsum product is our Standard Pulverized Gypsum which is a calcium sulfate ground to the particle size between 200 mesh (74 microns) and less than 325 mesh (44 microns). It has good flow properties, high surface area, and provides an excellent source of calcium and sulfur without signficantly raising the pH. Pulverized Gypsum is used in drilling fluids as a source of calcium for clay/shale stabilzation as well as drilling fluid water treatment. It is also used in the sugar beet industry as a pulp pressing aid as well as for soil amendment and other applications.
Iron ore is produced at the Nemo Quarry located near Nemo, South Dakota. Iron ore is primarily used in cement production at GCC in Rapid City, SD.