SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	4,732
15	GENERAL BUILDING CONTRACTORS	15,461	684
16	HEAVY CONSTRUCTION CONTRACTORS	5,420	5,306
17	SPECIAL TRADE CONTRACTORS	24,350	1,446
20	FOOD AND KINDRED PRODUCTS	624	443
21	TOBACCO MANUFACTURERS	5
22	TEXTILE MILL PRODUCTS	2,296	178
23	APPAREL AND OTHER TEXTILE PRODUCTS	5,602	3,884
24	LUMBER AND WOOD PRODUCTS	14,568	2,520
25	FURNITURE AND FIXTURES	22,229	7,701
26	PAPER AND ALLIED PRODUCTS	3,949	684
27	PRINTING AND PUBLISHING	10,718	6,482
28	CHEMICALS AND ALLIED PRODUCTS	11,556	4,272
29	PETROLEUM AND COAL PRODUCTS	1,457
30	RUBBER AND MISC. PLASTICS PRODUCTS	7,475	1,637
31	LEATHER AND LEATHER PRODUCTS	2,626	1,208
32	STONE, CLAY, AND GLASS PRODUCTS	4,199	776
33	PRIMARY METAL INDUSTRIES	8,965	45
34	FABRICATED METAL PRODUCTS	13,092	1,224
35	MACHINERY, EXCEPT ELECTRICAL	19,484	1,931
36	ELECTRIC AND ELECTRONIC EQUIPMENT	3,609	800
37	TRANSPORTATION EQUIPMENT	30,126	1,630
38	INSTRUMENTS AND RELATED PRODUCTS	16,609	5,501
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	5,237	2,537
41	LOCAL AND INTERURBAN PASSENGER TRANSIT	28
42	TRUCKING AND WAREHOUSING	2,245	1,564
44	WATER TRANSPORTATION	1,708
45	TRANSPORTATION BY AIR	4,268	48
48	COMMUNICATION	2,652	1,830
49	ELECTRIC, GAS, AND SANITARY SERVICES	2,703	374
50	WHOLESALE TRADE - DURABLE GOODS	7,687	2,260
51	WHOLESALE TRADE - NONDURABLE GOODS	6,161	474
72	PERSONAL SERVICES	4,975	3,615
73	BUSINESS SERVICES	2,167	2,148
75	AUTO REPAIR, SERVICES, AND GARAGES	18,566	4,149
76	MISCELLANEOUS REPAIR SERVICES	5,180
80	HEALTH SERVICES	12,464	9,003
TOTAL		305,243	76,355

*(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.