Insulation Outlook has published an article addressing the use of Firebricks to minimize wasted energy in iron and steel applications. “Recent studies conducted on IFBs using the 3 most common manufacturing methods—cast, slinger, and extrusion—show that the cast process offers the lowest thermal conductivity and provides the greatest energy savings.” Wasted energy must be addressed. This research had identified manufacturing processes that create the firebricks that have the lowest thermal conductivity and greatest energy savings.