SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	24,938	50
15	GENERAL BUILDING CONTRACTORS	31,945	634
16	HEAVY CONSTRUCTION CONTRACTORS	41,657	1,410
17	SPECIAL TRADE CONTRACTORS	126,959	443
20	FOOD AND KINDRED PRODUCTS	71,770	19,753
21	TOBACCO MANUFACTURERS	1,46
22	TEXTILE MILL PRODUCTS	8,854	2,170
23	APPAREL AND OTHER TEXTILE PRODUCTS	13,863	10,991
24	LUMBER AND WOOD PRODUCTS	2,965	209
25	FURNITURE AND FIXTURES	4,001
26	PAPER AND ALLIED PRODUCTS	26,287	5,608
27	PRINTING AND PUBLISHING	22,965	6,686
28	CHEMICALS AND ALLIED PRODUCTS	34,652	5,164
29	PETROLEUM AND COAL PRODUCTS	18,384	377
30	RUBBER AND MISC. PLASTICS PRODUCTS	6,745	75
31	LEATHER AND LEATHER PRODUCTS	836
32	STONE, CLAY, AND GLASS PRODUCTS	10,876	35
33	PRIMARY METAL INDUSTRIES	33,347	1,483
34	FABRICATED METAL PRODUCTS	39,557	1,232
35	MACHINERY, EXCEPT ELECTRICAL	88,188	15,867
36	ELECTRIC AND ELECTRONIC EQUIPMENT	27,576	9,944
37	TRANSPORTATION EQUIPMENT	29,529	1,457
38	INSTRUMENTS AND RELATED PRODUCTS	16,292	5,416
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	7,040	2,944
40	RAILROAD TRANSPORTATION	488
41	LOCAL AND INTERURBAN PASSENGER TRANSIT	5,698
42	TRUCKING AND WAREHOUSING	24,565	314
44	WATER TRANSPORTATION	12,278	88
45	TRANSPORTATION BY AIR	21,316	633
48	COMMUNICATION	23,566	1,093
49	ELECTRIC, GAS, AND SANITARY SERVICES	50,713	581
50	WHOLESALE TRADE - DURABLE GOODS	15,002	444
51	WHOLESALE TRADE - NONDURABLE GOODS	2,904
55	AUTOMOTIVE DEALERS & SERVICE STATIONS	30,360	3,051
72	PERSONAL SERVICES	14,102	9,106
73	BUSINESS SERVICES	26,889	7,449
75	AUTO REPAIR, SERVICES, AND GARAGES	38,411	509
76	MISCELLANEOUS REPAIR SERVICES	7,786
80	HEALTH SERVICES	154,640	107,234
84	MUSEUMS, BOTANICAL, ZOOLOGICAL GARDENS	1,643	164
TOTAL		1,121,046	222,613

*(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.