SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
29	PETROLEUM AND COAL PRODUCTS	731
32	STONE, CLAY, AND GLASS PRODUCTS	1,970	419
33	PRIMARY METAL INDUSTRIES	1,366
36	ELECTRIC AND ELECTRONIC EQUIPMENT	1,404	110
37	TRANSPORTATION EQUIPMENT	11
38	INSTRUMENTS AND RELATED PRODUCTS	83	53
49	ELECTRIC, GAS, AND SANITARY SERVICES	9,084
73	BUSINESS SERVICES	641	165
80	HEALTH SERVICES	21,393	15,590
84	MUSEUMS, BOTANICAL, ZOOLOGICAL GARDENS	2,464	1,232
TOTAL		39,147	17,568

*(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.