SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
17	SPECIAL TRADE CONTRACTORS	2,648
20	FOOD AND KINDRED PRODUCTS	279
32	STONE, CLAY, AND GLASS PRODUCTS	826
33	PRIMARY METAL INDUSTRIES	49
34	FABRICATED METAL PRODUCTS	16
35	MACHINERY, EXCEPT ELECTRICAL	7,654	1,881
36	ELECTRIC AND ELECTRONIC EQUIPMENT	424	165
37	TRANSPORTATION EQUIPMENT	136
38	INSTRUMENTS AND RELATED PRODUCTS	512	229
42	TRUCKING AND WAREHOUSING	471
48	COMMUNICATION	352
51	WHOLESALE TRADE - NONDURABLE GOODS	2,669
76	MISCELLANEOUS REPAIR SERVICES	2,950
80	HEALTH SERVICES	601
TOTAL		19,589	2,276

*(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.