SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
15	GENERAL BUILDING CONTRACTORS	870
17	SPECIAL TRADE CONTRACTORS	9,402
20	FOOD AND KINDRED PRODUCTS	678	91
22	TEXTILE MILL PRODUCTS	17
23	APPAREL AND OTHER TEXTILE PRODUCTS	108	22
27	PRINTING AND PUBLISHING	4,549	917
28	CHEMICALS AND ALLIED PRODUCTS	3,627	523
30	RUBBER AND MISC. PLASTICS PRODUCTS	457	25
31	LEATHER AND LEATHER PRODUCTS	2,418	1,640
32	STONE, CLAY, AND GLASS PRODUCTS	37	37
33	PRIMARY METAL INDUSTRIES	369	102
34	FABRICATED METAL PRODUCTS	3,584	538
35	MACHINERY, EXCEPT ELECTRICAL	2,212	114
36	ELECTRIC AND ELECTRONIC EQUIPMENT	2,020	725
37	TRANSPORTATION EQUIPMENT	3,521	356
38	INSTRUMENTS AND RELATED PRODUCTS	698	140
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	589	159
40	RAILROAD TRANSPORTATION	1,351	392
42	TRUCKING AND WAREHOUSING	3,508	15
45	TRANSPORTATION BY AIR	8,433	2,836
48	COMMUNICATION	712	178
49	ELECTRIC, GAS, AND SANITARY SERVICES	2,232
50	WHOLESALE TRADE - DURABLE GOODS	80	40
55	AUTOMOTIVE DEALERS & SERVICE STATIONS	339
72	PERSONAL SERVICES	426
73	BUSINESS SERVICES	136,678	57,890
80	HEALTH SERVICES	68,140	38,672
84	MUSEUMS, BOTANICAL, ZOOLOGICAL GARDENS	365	365
TOTAL		257,421	105,777

*(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.