Class Code: 1747
Per NCCI's Scopes Code Description:
Code 1747 is applicable to the grinding of emery, talc or other silicate minerals (silica in a combined form) such as kaolin and other related clays, e.g., bauxite, fullers earth, ochre, marl, etc. The raw material is received at the grinding mill, where it is first crushed to marble size and then ground to various grades of fineness. Further refining may be accomplished by blowing the ground material through a series of screens prior to packaging.