The data published with NAICS code 311212 include the following SIC industry:
2044 Rice milling
This definition comes from the 1997 NAICS manual. However, for this industry, the 1997 Economic Census Manufacturing did not fully implement the conversion to NAICS. Data for NAICS industry 311212 do not include rice mills primarily engaged in packaging uncooked rice with other ingredients. The NAICS definitions will be fully implemented with the 2002 Economic Census.