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7-Digit SIC Codes

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Christine M. Drew

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May 21, 1996, 3:00:00 AM5/21/96
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We are trying to track down a list of 7-digit SIC codes. According to the
U.S. Dept. of Commerce Library, (I just talked with them on the telephone)
the government only publishes the 4 digit codes in the _SIC Manual_.
Predicasts has come up with their own 7-digit extension and D&B publishes
the _Standard Industrial Classification Manual SIC 2+2_. It is my
understanding that the Census of Manufactures uses some 7-SIC levels in
their Industry Series. Where do these codes come from?

A faculty member needs these 7-digit codes to search a database called
CRISP. This databank is supposed to contain stock market data. Any info
on this databank would be appreciated as well.

Thanks.

|...Christine Drew dre...@sncac.snc.edu
|...Coordinator of Library User Services
|...St. Norbert College Library
|...414/337-3453

Mike Lavin

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May 21, 1996, 3:00:00 AM5/21/96
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On Tue, 21 May 1996 15:02:33 -0500 you said:
>We are trying to track down a list of 7-digit SIC codes. According to the
>U.S. Dept. of Commerce Library, (I just talked with them on the telephone)
>the government only publishes the 4 digit codes in the _SIC Manual_.
>Predicasts has come up with their own 7-digit extension and D&B publishes
>the _Standard Industrial Classification Manual SIC 2+2_. It is my
>understanding that the Census of Manufactures uses some 7-SIC levels in
>their Industry Series. Where do these codes come from?
>
>A faculty member needs these 7-digit codes to search a database called
>CRISP. This databank is supposed to contain stock market data. Any info
>on this databank would be appreciated as well.
>
>Thanks.
>
>|...Christine Drew dre...@sncac.snc.edu


The source of the Census codes you ask about is entitled "Numeric
List of Manufactured and Mineral Products." It is published every
five years, in conjunction with the Economic Censuses. Latest
edition was published in 1993, for use with the 1992 Census.

Note the title: it is intended for use with the Census of Manufactures
and the Census of Mineral Industries, so it covers only those
industry groups. Also note that these are not industry codes at
all, but *product* codes based on the OMB's SIC codes. The
Census Bureau uses them to show relationships between industries
and products (to calculate specialization ratios, etc.)

Since this is a government publication, anyone is free to use
these codes, but I'm not aware that any commercial publishers do
so.

I didn't realize that the CRSP tapes employed seven-digit codes,
but then again, I don't have a working knowledge of CRSP. If
they do, then I recommend getting your answer from the horse's
mouth. Call the Center for Research in Securities Prices at
(312) 702-7275. If they employ extended codes, they should be
able to tell you where they came from.

BTW, the info in Christine's query is absolutely correct, but
since this is a pet peeve of mine, allow me to restate it for
clarification: if an industry classification code is
longer than four digits, it *ain't* an SIC Code.

Mike Lavin
Lockwood Library
University at Buffalo

WRCrowley

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May 24, 1996, 3:00:00 AM5/24/96
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I find the Industrial classification codes at the following internet
address to be very useful. However, they may not be the official SIC
codes.

SIC Help
http://wyp.net/Info/Help/SIC/

W. R. Crowley
Competitive Analysis Technologies
Cypress, TX 77429
Phone 713-370-3846
Fax 713-376-6231

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