SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
15	GENERAL BUILDING CONTRACTORS	9,664
17	SPECIAL TRADE CONTRACTORS	2,062
27	PRINTING AND PUBLISHING	1,264
28	CHEMICALS AND ALLIED PRODUCTS	583
29	PETROLEUM AND COAL PRODUCTS	1,082
30	RUBBER AND MISC. PLASTICS PRODUCTS	5,188	3,234
33	PRIMARY METAL INDUSTRIES	215
34	FABRICATED METAL PRODUCTS	2,464	61
35	MACHINERY, EXCEPT ELECTRICAL	12,416	1,360
36	ELECTRIC AND ELECTRONIC EQUIPMENT	246
37	TRANSPORTATION EQUIPMENT	484
38	INSTRUMENTS AND RELATED PRODUCTS	12
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	1,679	1,469
45	TRANSPORTATION BY AIR	193
49	ELECTRIC, GAS, AND SANITARY SERVICES	3,809
73	BUSINESS SERVICES	2,422	384
84	MUSEUMS, BOTANICAL, ZOOLOGICAL GARDENS	575	246
TOTAL		44,358	6,755

*(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.