SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	58,881
15	GENERAL BUILDING CONTRACTORS	12,961	768
16	HEAVY CONSTRUCTION CONTRACTORS	48,204	774
17	SPECIAL TRADE CONTRACTORS	50,995	107
20	FOOD AND KINDRED PRODUCTS	30,580	1,456
21	TOBACCO MANUFACTURERS	78
22	TEXTILE MILL PRODUCTS	40,151	17,654
23	APPAREL AND OTHER TEXTILE PRODUCTS	64,484	54,643
24	LUMBER AND WOOD PRODUCTS	23,993	714
25	FURNITURE AND FIXTURES	3,835	801
26	PAPER AND ALLIED PRODUCTS	39,980	5,286
27	PRINTING AND PUBLISHING	58,480	6,267
28	CHEMICALS AND ALLIED PRODUCTS	8,176
29	PETROLEUM AND COAL PRODUCTS	12,784	253
30	RUBBER AND MISC. PLASTICS PRODUCTS	33,961	5,083
31	LEATHER AND LEATHER PRODUCTS	2,288	1,749
32	STONE, CLAY, AND GLASS PRODUCTS	28,332	985
33	PRIMARY METAL INDUSTRIES	64,356	1,062
34	FABRICATED METAL PRODUCTS	83,803	5,632
35	MACHINERY, EXCEPT ELECTRICAL	277,869	13,961
36	ELECTRIC AND ELECTRONIC EQUIPMENT	28,278	6,115
37	TRANSPORTATION EQUIPMENT	82,886	2,709
38	INSTRUMENTS AND RELATED PRODUCTS	9,432	1,022
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	8,532	1,932
40	RAILROAD TRANSPORTATION	436
41	LOCAL AND INTERURBAN PASSENGER TRANSIT	7,832
42	TRUCKING AND WAREHOUSING	24,675	10
44	WATER TRANSPORTATION	3,542
45	TRANSPORTATION BY AIR	27,254	57
48	COMMUNICATION	4,017	387
49	ELECTRIC, GAS, AND SANITARY SERVICES	76,799	1,196
50	WHOLESALE TRADE - DURABLE GOODS	38,036	5,428
51	WHOLESALE TRADE - NONDURABLE GOODS	6,641	431
55	AUTOMOTIVE DEALERS & SERVICE STATIONS	37,263	1,098
72	PERSONAL SERVICES	1,301	185
73	BUSINESS SERVICES	7,858	49
75	AUTO REPAIR, SERVICES, AND GARAGES	31,895
76	MISCELLANEOUS REPAIR SERVICES	7,401
80	HEALTH SERVICES	7,496	436
TOTAL		1,356,466	138,248

*(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.