SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
28	CHEMICALS AND ALLIED PRODUCTS	13
30	RUBBER AND MISC. PLASTICS PRODUCTS	322
33	PRIMARY METAL INDUSTRIES	342
34	FABRICATED METAL PRODUCTS	3,593	1,057
35	MACHINERY, EXCEPT ELECTRICAL	4,366
36	ELECTRIC AND ELECTRONIC EQUIPMENT	810	118
37	TRANSPORTATION EQUIPMENT	4,332	456
38	INSTRUMENTS AND RELATED PRODUCTS	51	4
42	TRUCKING AND WAREHOUSING	3,355
45	TRANSPORTATION BY AIR	24
50	WHOLESALE TRADE - DURABLE GOODS	3,090
80	HEALTH SERVICES	25	8
TOTAL		20,323	1,644

*(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.