Copies will be available from the Superintendent of Documents of the Government Printing Office. Industry Ascertained for persons 14 years of age and over in the experienced civilian labor force and in the labor reserve. Employed persons were to report the job at which they worked the most hours during the reference week. The experienced unemployed and persons in the labor reserve were to report the job they last held. The name of employer is a basic tool in coding industry, since coders refer to lists of establishments showing their industrial classification from the quinquennial Economic Censuses.
Information supplied by respondents is assigned an industry code.
These groups were further classified into 150 specific categories. Intermediate levels of industry classification scheme were presented in some tables. 96.13 Industry not reported For the 1970 census, the Industry Classification System, like that for occupation, has been revised. This system is designed for use in classifying the industry returns for the 1970 population census and demographic surveys to be conducted by the Bureau of the Census during the decade of the seventies. For 1970, there are 226 uniquely identified groups in the classification in contrast to the 150 groups in the 1960 classification.