- Canadian manufacturing facility and satellite sales office is located in Nanticoke Ontario. Riverside Refractories is an Alumino-Silica, High Alumina and Alumina Spinel specialty refractory manufacturer that has been serving the needs of industry since 1929. Through an international network of distribution facilities we offer a full line of standard refractory products as well as custom-designed products to meet your specific needs. We have earned a strong reputation for innovation, service and quality; which stems from our ongoing commitment to exceptional work and unbeatable service. Canadian manufacturing facility and satellite sales office is located in Nanticoke Ontario. Riverside Refractories is an Alumino-Silica, High Alumina and Alumina Spinel specialty refractory manufacturer that has been serving the needs of industry since 1929. Through an international network of distribution facilities we offer a full line of standard refractory products as well as custom-designed products to meet your specific needs. We have earned a strong reputation for innovation, service and quality; which stems from our ongoing commitment to exceptional work and unbeatable service. more...See more text