SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
16	HEAVY CONSTRUCTION CONTRACTORS	31	31
17	SPECIAL TRADE CONTRACTORS	325	84
32	STONE, CLAY, AND GLASS PRODUCTS	293	176
34	FABRICATED METAL PRODUCTS	249
35	MACHINERY, EXCEPT ELECTRICAL	566	66
36	ELECTRIC AND ELECTRONIC EQUIPMENT	13	13
37	TRANSPORTATION EQUIPMENT	24	7
38	INSTRUMENTS AND RELATED PRODUCTS	1,677	989
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	301	221
73	BUSINESS SERVICES	3,662	1,221
TOTAL		7,140	2,808

*(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.