SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	6,127
15	GENERAL BUILDING CONTRACTORS	4,178
17	SPECIAL TRADE CONTRACTORS	19,694
20	FOOD AND KINDRED PRODUCTS	14,586	2,628
22	TEXTILE MILL PRODUCTS	1,022	476
23	APPAREL AND OTHER TEXTILE PRODUCTS	146	146
24	LUMBER AND WOOD PRODUCTS	104	14
26	PAPER AND ALLIED PRODUCTS	95
27	PRINTING AND PUBLISHING	105	7
28	CHEMICALS AND ALLIED PRODUCTS	2,010	186
30	RUBBER AND MISC. PLASTICS PRODUCTS	59	59
31	LEATHER AND LEATHER PRODUCTS	2,193	1,571
32	STONE, CLAY, AND GLASS PRODUCTS	9,872	1,077
33	PRIMARY METAL INDUSTRIES	1,835	89
34	FABRICATED METAL PRODUCTS	35
35	MACHINERY, EXCEPT ELECTRICAL	3,851	953
36	ELECTRIC AND ELECTRONIC EQUIPMENT	1,467	1,081
37	TRANSPORTATION EQUIPMENT	8,638	1,180
38	INSTRUMENTS AND RELATED PRODUCTS	1,588	944
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	183
41	LOCAL AND INTERURBAN PASSENGER TRANSIT	273	273
42	TRUCKING AND WAREHOUSING	1,915
48	COMMUNICATION	215	29
49	ELECTRIC, GAS, AND SANITARY SERVICES	2,848
50	WHOLESALE TRADE - DURABLE GOODS	610	138
55	AUTOMOTIVE DEALERS & SERVICE STATIONS	4,717	2,975
72	PERSONAL SERVICES	1,141	597
80	HEALTH SERVICES	11,104	7,929
84	MUSEUMS, BOTANICAL, ZOOLOGICAL GARDENS	92
TOTAL		100,704	22,352

*(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.