Table Name: TRI_FACILITY_NAICS_HISTORY

Description: Historical representations of the North American Industry Classification System (NAICS) code or codes which best describe the business activities conducted at the facility or establishment. NAICS codes are 6 digit numbers used by the Bureau of Census as part of a system to categorize and track the types of business activities conducted in the United States.

The individual digits within the NAICS code indicate different levels of granularity in identifying a business. Here is an example of the granularity the individual digits provide:

No.	Example
Digits	NAICS	Definition / Granularity
- - - - -	- - - - - - -	- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Two	31xxxx	Manufacturing
Three	311xxx	Food Manufacturing
Four	3115xx	Food Manufacturing, Diary Products
Five	31151x	Food Manufacturing, Diary Products, (Not Frozen)
Six	311511	Food Manufacturing, Diary Products, (Not Frozen), Fluid Milk

Relationships:

Must represent historical NAICS data for and only one TRI_FACILITY_HISTORY related by column TRI_FACILITY_ID.

Columns:

Definition Source: TRI Program Division; Envirofacts Development Team

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Table Name: TRI_FACILITY_NAICS_HISTORY

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