The data published with NAICS code 211112 include the following SIC industry:
1321 Natural gas liquids
This definition comes from the 1997 NAICS manual. However, for this industry, the 1997 Economic Census Mining did not fully implement the conversion to NAICS. Data for NAICS industry 211112 do not include establishments primarily engaged in sulfur recovery from natural gas. The NAICS definitions will be fully implemented with the 2002 Economic Census.