SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
29	PETROLEUM AND COAL PRODUCTS	1,082
33	PRIMARY METAL INDUSTRIES	1,075	31
34	FABRICATED METAL PRODUCTS	352
35	MACHINERY, EXCEPT ELECTRICAL	7,043	22
36	ELECTRIC AND ELECTRONIC EQUIPMENT	217	12
37	TRANSPORTATION EQUIPMENT	10,857	82
73	BUSINESS SERVICES	382	25
TOTAL		21,007	171

*(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.