SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	20,297
15	GENERAL BUILDING CONTRACTORS	9,527	453
16	HEAVY CONSTRUCTION CONTRACTORS	16,334	614
17	SPECIAL TRADE CONTRACTORS	4,411
20	FOOD AND KINDRED PRODUCTS	6,534	87
21	TOBACCO MANUFACTURERS	81
22	TEXTILE MILL PRODUCTS	3,391	1,000
23	APPAREL AND OTHER TEXTILE PRODUCTS	642
24	LUMBER AND WOOD PRODUCTS	4,281	118
25	FURNITURE AND FIXTURES	961
26	PAPER AND ALLIED PRODUCTS	2,640	497
27	PRINTING AND PUBLISHING	3,152
28	CHEMICALS AND ALLIED PRODUCTS	15,040	3,146
29	PETROLEUM AND COAL PRODUCTS	3,018
30	RUBBER AND MISC. PLASTICS PRODUCTS	6,953	410
31	LEATHER AND LEATHER PRODUCTS	108
32	STONE, CLAY, AND GLASS PRODUCTS	6,137
33	PRIMARY METAL INDUSTRIES	4,768	28
34	FABRICATED METAL PRODUCTS	16,025	4,238
35	MACHINERY, EXCEPT ELECTRICAL	12,844	616
36	ELECTRIC AND ELECTRONIC EQUIPMENT	4,591	1,046
37	TRANSPORTATION EQUIPMENT	17,804	786
38	INSTRUMENTS AND RELATED PRODUCTS	5,192	3,699
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	421	51
41	LOCAL AND INTERURBAN PASSENGER TRANSIT	445
42	TRUCKING AND WAREHOUSING	2,411	50
44	WATER TRANSPORTATION	1,600
45	TRANSPORTATION BY AIR	3,557
49	ELECTRIC, GAS, AND SANITARY SERVICES	3,553
50	WHOLESALE TRADE - DURABLE GOODS	8,349	5,039
72	PERSONAL SERVICES	995
73	BUSINESS SERVICES	576	144
75	AUTO REPAIR, SERVICES, AND GARAGES	15,336
80	HEALTH SERVICES	1,595	54
84	MUSEUMS, BOTANICAL, ZOOLOGICAL GARDENS	368
TOTAL		204,671	22,075

*(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.