Applies to the mfg. of glazed or porcelain earthenware pottery by a hand molded or casting process. Contemplates products such as porcelain bathtubs, sinks, pots, cruets, flower pots, urns and vases. Codes 4061 and 4062 shall not be assigned to the same risk unless the operations described by these classifications are conducted as a separate and distinct business. Mining, quarrying or clay digging to be separately rated. Refer to code 4036 for the mfg. of cultured marble products.