Skull generated from the hot metal. i explain as under we have some confusion that our product SKULL & SLUG is treat as either Scape or By product. skull is a result of some overflow of steel liquid & then the recovery of steel is 75 to 80 % as compare to PIG IRON. second slug is two type granulated or non-granulated we are not capable to sale non-granulated slug so plz suggest this two product attract T.C.S. or not.