OMG what a joke...
http://frwebgate.access.gpo.gov/cgi-bin/useftp.cgi?IPaddress=162.140.64.21&filename=erp_c2.wais&directory=/disk2/wais/data/2004_erpBox 2-2: What Is Manufacturing?
The value of the output of the U.S. manufacturing sector as
defined in official U.S. statistics is larger than the economies of
all but a handful of other countries. The definition of a
manufactured product, however, is not straightforward. When a
fast-food restaurant sells a hamburger, for example, is it providing
a "service" or is it combining inputs to "manufacture" a product?
The official definition of manufacturing comes from the Census
Bureau's North American Industry Classification System, or NAICS.
NAICS classifies all business establishments in the United States
into categories based on how their output is produced. One such
category is "manufacturing." NAICS classifies an establishment as
in the manufacturing sector if it is "engaged in the mechanical,
physical, or chemical transformation of materials, substances, or
components into new products."
This definition is somewhat unspecific, as the Census Bureau has
recognized: "The boundaries of manufacturing and other sectors… can
be somewhat blurry." Some (perhaps surprising) examples of
manufacturers listed by the Bureau of Labor Statistics are:
bakeries, candy stores, custom tailors, milk bottling and
pasteurizing, fresh fish packaging (oyster shucking, fish
filleting), and tire retreading. Sometimes, seemingly subtle
differences can determine whether an industry is classified as
manufacturing. For example, mixing water and concentrate to produce
soft drinks is classified as manufacturing. However, if that
activity is performed at a snack bar, it is considered a service.
more.....
http://frwebgate.access.gpo.gov/cgi-bin/useftp.cgi?IPaddress=162.140.64.21&filename=erp_c2.wais&directory=/disk2/wais/data/2004_erp