SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	14,540
15	GENERAL BUILDING CONTRACTORS	10,527
16	HEAVY CONSTRUCTION CONTRACTORS	9,078	75
17	SPECIAL TRADE CONTRACTORS	38,743	236
20	FOOD AND KINDRED PRODUCTS	2,161
21	TOBACCO MANUFACTURERS	7
22	TEXTILE MILL PRODUCTS	1,564	725
23	APPAREL AND OTHER TEXTILE PRODUCTS	454
24	LUMBER AND WOOD PRODUCTS	6,121	3,067
25	FURNITURE AND FIXTURES	3,621	1,643
26	PAPER AND ALLIED PRODUCTS	4,096
27	PRINTING AND PUBLISHING	21,904	2,648
28	CHEMICALS AND ALLIED PRODUCTS	12,973	2,533
29	PETROLEUM AND COAL PRODUCTS	2,205
30	RUBBER AND MISC. PLASTICS PRODUCTS	6,591	477
31	LEATHER AND LEATHER PRODUCTS	36
32	STONE, CLAY, AND GLASS PRODUCTS	2,348
33	PRIMARY METAL INDUSTRIES	4,008
34	FABRICATED METAL PRODUCTS	33,644	222
35	MACHINERY, EXCEPT ELECTRICAL	35,859	4,231
36	ELECTRIC AND ELECTRONIC EQUIPMENT	7,524	2,218
37	TRANSPORTATION EQUIPMENT	31,119	1,737
38	INSTRUMENTS AND RELATED PRODUCTS	3,371	1,746
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	4,030	362
41	LOCAL AND INTERURBAN PASSENGER TRANSIT	3,897
42	TRUCKING AND WAREHOUSING	4,584	448
44	WATER TRANSPORTATION	3,744	244
45	TRANSPORTATION BY AIR	5,900	57
49	ELECTRIC, GAS, AND SANITARY SERVICES	14,802	116
50	WHOLESALE TRADE - DURABLE GOODS	10,770	86
72	PERSONAL SERVICES	216
73	BUSINESS SERVICES	1,824	63
75	AUTO REPAIR, SERVICES, AND GARAGES	1,830
76	MISCELLANEOUS REPAIR SERVICES	1,044
80	HEALTH SERVICES	6,250	2,510
84	MUSEUMS, BOTANICAL, ZOOLOGICAL GARDENS	1,735	164
TOTAL		313,185	25,609

*(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.