SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
15	GENERAL BUILDING CONTRACTORS	7,006
17	SPECIAL TRADE CONTRACTORS	465
20	FOOD AND KINDRED PRODUCTS	249
32	STONE, CLAY, AND GLASS PRODUCTS	2,898	419
33	PRIMARY METAL INDUSTRIES	2,846
35	MACHINERY, EXCEPT ELECTRICAL	527
36	ELECTRIC AND ELECTRONIC EQUIPMENT	58
37	TRANSPORTATION EQUIPMENT	34
38	INSTRUMENTS AND RELATED PRODUCTS	157
51	WHOLESALE TRADE - NONDURABLE GOODS	6,161	474
80	HEALTH SERVICES	54
TOTAL		20,455	893

*(1) By survey design, not all 2-digit SICs were surveyed. (2) The estimates for each 2-digit SIC apply only to the 3- and 4-digit SICs surveyed within the 2-digit SIC. Not all SICs were surveyed. (3) When using the estimates, standard errors associated with estimates should be considered. (4) Potential exposures to a chemical agent are categorized as actual (i.e., the surveyor observed the use of the specific agent) or tradename (i.e., the surveyor observed the use of a tradename product known to contain the specific agent). The estimates presented in the table combine both categories.