SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
34	FABRICATED METAL PRODUCTS	661	54
35	MACHINERY, EXCEPT ELECTRICAL	15,233	4,352
36	ELECTRIC AND ELECTRONIC EQUIPMENT	2,310	466
37	TRANSPORTATION EQUIPMENT	5,312	418
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	609	217
45	TRANSPORTATION BY AIR	7,987	57
73	BUSINESS SERVICES	16
TOTAL		32,129	5,565

*(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.