34f08f34_rials_patent_application_class__Description
20090314461 12-24-2009 [Description] 
Anti-Veining Agent for Metal Casting - Additives to foundry sand cores are provided for reducing or eliminating surface defects in metal castings. The additives generally comprise an iron oxide component and a glass component which is preferably free of lithium oxide.
Utilizing particular mold materials patent application class