SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
20	FOOD AND KINDRED PRODUCTS	240
35	MACHINERY, EXCEPT ELECTRICAL	171
36	ELECTRIC AND ELECTRONIC EQUIPMENT	959	480
37	TRANSPORTATION EQUIPMENT	138
42	TRUCKING AND WAREHOUSING	243
45	TRANSPORTATION BY AIR	3
72	PERSONAL SERVICES	6,670
73	BUSINESS SERVICES	574	159
80	HEALTH SERVICES	39,442	28,397
TOTAL		48,439	29,036

*(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.