About the Business With over 25 years' experience, GrayCor LLC is the leading value engineering and consulting firm in the Kalispell area, with the expertise to offer a wide variety of services to the construction industry. Whether you need an excavation expert to prepare a site for a new building or a demolition specialist to clear away an old one, you can rely on GrayCor LLC for prompt service and high-quality work.Their range of abilities includes sand and gravel hauling, as well as deliveries of topsoil, pit run, mulch, and... read full review »