Idaho Materials & Construction, a CRH company, formerly International Stone, has worked to be the preferred source of quality ready-mixed concrete in Idaho since 1972. The company has received numerous awards recognizing its achievements in safety, quality, innovation, and service. From the roads you drive on to the parks you play in, you can count on the Idaho Materials & Construction team to manufacture and deliver quality products and projects in a safe, timely, and efficient manner. Idaho Materials & Construction is part of a team of companies including Staker Parson Materials & Construction, Hales Sand & Gravel, Burdick Materials, Nielson Construction & Materials, Western Rock Products and Reynolds Excavation, Demolition & Utilities.