SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	5,281
15	GENERAL BUILDING CONTRACTORS	21,455	76
16	HEAVY CONSTRUCTION CONTRACTORS	4,180
17	SPECIAL TRADE CONTRACTORS	24,288	141
20	FOOD AND KINDRED PRODUCTS	13,973	17
21	TOBACCO MANUFACTURERS	9
22	TEXTILE MILL PRODUCTS	768	106
23	APPAREL AND OTHER TEXTILE PRODUCTS	1,415
24	LUMBER AND WOOD PRODUCTS	1,750	608
25	FURNITURE AND FIXTURES	940
26	PAPER AND ALLIED PRODUCTS	8,562	110
27	PRINTING AND PUBLISHING	1,863	36
28	CHEMICALS AND ALLIED PRODUCTS	12,291	85
29	PETROLEUM AND COAL PRODUCTS	915	112
30	RUBBER AND MISC. PLASTICS PRODUCTS	7,729	1,239
31	LEATHER AND LEATHER PRODUCTS	48
32	STONE, CLAY, AND GLASS PRODUCTS	3,042
33	PRIMARY METAL INDUSTRIES	40,755	180
34	FABRICATED METAL PRODUCTS	59,738	1,948
35	MACHINERY, EXCEPT ELECTRICAL	44,897	457
36	ELECTRIC AND ELECTRONIC EQUIPMENT	6,639	646
37	TRANSPORTATION EQUIPMENT	31,087	415
38	INSTRUMENTS AND RELATED PRODUCTS	7,949	868
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	4,512	129
40	RAILROAD TRANSPORTATION	44
42	TRUCKING AND WAREHOUSING	3,023
44	WATER TRANSPORTATION	990
45	TRANSPORTATION BY AIR	11,865	57
49	ELECTRIC, GAS, AND SANITARY SERVICES	16,242	116
50	WHOLESALE TRADE - DURABLE GOODS	5,114	46
51	WHOLESALE TRADE - NONDURABLE GOODS	6,161	474
55	AUTOMOTIVE DEALERS & SERVICE STATIONS	684
73	BUSINESS SERVICES	2,783	729
75	AUTO REPAIR, SERVICES, AND GARAGES	21,170
76	MISCELLANEOUS REPAIR SERVICES	10,621
80	HEALTH SERVICES	3,276	1,838
TOTAL		386,142	10,433

*(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.