Guy Nielson Company is a Refractory Contractor based out of Pocatello, Idaho. Guy Nielson also has office locations in Washington, Oregon, and Montana. We strive to be a reliable partner with our customers and provide the highest level of service through quality, skilled employees, innovative products and safe work practices. Guy Nielson Company is your Refractory Solution. Our diversified portfolio keeps us at the forefront of technology and innovation regarding refractory installation.