Class Code: 4062
Per NCCI's Scopes Code Description:
Code 4062 applies to the manufacture of porcelain ware pottery by a mechanical press forming process. Using such a process enables an employer to produce one product in large quantities. Some of the products included in the scope of this classification are electrical porcelain ware such as insulators, spark plugs, ceramic cores, ceramic wire spools, thread guides and pulleys. Other products are ceramic floor, ceiling, wall and fireplace tiles that are decorative rather than structural in nature. Kaolin and china clay, steatite, talc, flint, feldspar, calcium carbonate, bauxite, silica sand, aluminum oxide, chrome oxide, pentuntse, potash or sometimes soda are received from others. The ingredients are mixed in a typical batch mixer with water and dumped into a hammer mill. The stock is poured into a feed hopper and fed into various types of clay-forming machines that press the stock mechanically, either by hand or power. The formed stock is placed on trays and carts that pass through fired kilns under great heat, which produces the desired glassy porcelain product. Some formed stock prior to passing through the kilns may be hand- or machine-brushed to remove fins. The products are inspected, sorted and placed into cartons for shipment.
Refer to Code 4036 for the manufacture of cultured marble products such as bathroom vanity tops, shower pans and bathtubs.
Massachusetts Refer to Code 4484 for the manufacture of cultured marble products such as bathroom vanity tops, shower pans and bathtubs.
Refer to Code 4053 for the following operations: Pottery Mfg.—China or Tableware and Terra-Cotta Mfg.