(a)  MECS covers only 98 percent of the payroll in manufacturing.  The remaining 2 percent of the payroll accounts for about 40 percent of the establishments according to the 1997 Census of Manufacturing (Appendix C) fielded by the U.S. Census Bureau.

   (b)  The Standard Industrial Classification (SIC) system has been replaced by the North American Industry Classification System (NAICS).  Since the Bureau of the Census has collected the information necessary to classify establishments on both an NAICS and an SIC basis, the same 1998 data can be shown on both the old and the new basis in bridge tables that allow comparisons between the two systems.  These data are hereby produced for the last time on an SIC basis for 1998 at the national level only.

    (c)  Any Energy Source represents the non-duplicative total of establishments identified with any of the listed energy sources.  This count includes only those establishments that reported this activity in 1998.

    (d)  Net Electricity is obtained by summing purchases, transfers in, and generation from noncombustible renewable resources, minus quantities sold and transferred out.  It does not include electricity inputs from onsite cogeneration or generation from combustible fuels because that energy has already been included as generating fuel (for example, coal).

    (e)  Distillate Fuel Oil includes Nos. 1, 2, and 4 fuel oils and Nos. 1, 2, and 4 diesel fuels.

    (f)  Natural Gas includes natural gas obtained from utilities, local distribution companies,and any other supplier(s), such as independent gas producers, gas brokers, marketers, and any marketing subsidiaries of utilities.

    (g)  Examples of Liquefied Petroleum Gases (LPG) are ethane, ethylene, propane, propylene, normal butane, butylene, ethane-propane mixtures, propane-butane mixtures, and isobutane produced at refineries or natural gas processing plants, including plants that fractionate raw Natural Gas Liquids (NGL).

    (h)  Other includes net steam (the sum of purchases, generation from renewables, and net transfers), and other energy that respondents indicated was used to produce heat and power.

     (i)  W=Withheld to avoid disclosing data for individual establishments.

      Notes:  The estimated number of establishments presented in this table are for the total consumption of energy (formerly total inputs of energy) for the production of heat, power, and electricity generation, regardless of where the energy was produced.  Specifically, the estimated number of establishments include the quantities of energy that were originally produced offsite and purchased by or transferred to the establishment, plus those that were produced onsite from other energy or input materials not classified as energy, or were extracted from captive (onsite) mines or wells.

    Source: Energy Information Administration, Office of Energy Markets and End Use, Energy Consumption Division, Form EIA-846, '1998 Manufacturing Energy Consumption Survey,' and Office of Oil and Gas, Petroleum Supply Division, Form EIA-810, 'Monthly Refinery Report' for 1994 and 1998.