SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
28	CHEMICALS AND ALLIED PRODUCTS	136
29	PETROLEUM AND COAL PRODUCTS	5,713	136
30	RUBBER AND MISC. PLASTICS PRODUCTS	244
31	LEATHER AND LEATHER PRODUCTS	36
32	STONE, CLAY, AND GLASS PRODUCTS	17,918	2,213
33	PRIMARY METAL INDUSTRIES	1,828
34	FABRICATED METAL PRODUCTS	41
35	MACHINERY, EXCEPT ELECTRICAL	1,378	21
36	ELECTRIC AND ELECTRONIC EQUIPMENT	5,086	439
37	TRANSPORTATION EQUIPMENT	37
38	INSTRUMENTS AND RELATED PRODUCTS	87
45	TRANSPORTATION BY AIR	55
73	BUSINESS SERVICES	2,974	370
TOTAL		35,532	3,178

*(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.