SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	10,800
15	GENERAL BUILDING CONTRACTORS	2,237	25
16	HEAVY CONSTRUCTION CONTRACTORS	2,137
17	SPECIAL TRADE CONTRACTORS	9,160	77
20	FOOD AND KINDRED PRODUCTS	22,693	3,622
21	TOBACCO MANUFACTURERS	1,27
22	TEXTILE MILL PRODUCTS	30,229	2,762
23	APPAREL AND OTHER TEXTILE PRODUCTS	8,568	6,967
24	LUMBER AND WOOD PRODUCTS	5,482	1,979
25	FURNITURE AND FIXTURES	269
26	PAPER AND ALLIED PRODUCTS	15,354	1,307
27	PRINTING AND PUBLISHING	21,091	2,294
28	CHEMICALS AND ALLIED PRODUCTS	26,134	3,242
29	PETROLEUM AND COAL PRODUCTS	13,051	170
30	RUBBER AND MISC. PLASTICS PRODUCTS	8,407	2,265
31	LEATHER AND LEATHER PRODUCTS	185	185
32	STONE, CLAY, AND GLASS PRODUCTS	3,916	588
33	PRIMARY METAL INDUSTRIES	7,675	141
34	FABRICATED METAL PRODUCTS	20,503	3,930
35	MACHINERY, EXCEPT ELECTRICAL	97,765	8,590
36	ELECTRIC AND ELECTRONIC EQUIPMENT	11,910	2,362
37	TRANSPORTATION EQUIPMENT	33,371	1,107
38	INSTRUMENTS AND RELATED PRODUCTS	9,702	3,510
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	7,602	1,249
42	TRUCKING AND WAREHOUSING	10,076	1,897
44	WATER TRANSPORTATION	6,951	244
45	TRANSPORTATION BY AIR	16,338	2,107
47	TRANSPORTATION SERVICES	86
48	COMMUNICATION	2,291	338
49	ELECTRIC, GAS, AND SANITARY SERVICES	9,052	429
50	WHOLESALE TRADE - DURABLE GOODS	6,605	195
51	WHOLESALE TRADE - NONDURABLE GOODS	2,462
55	AUTOMOTIVE DEALERS & SERVICE STATIONS	5,107
72	PERSONAL SERVICES	16,702	10,583
73	BUSINESS SERVICES	90,504	31,351
75	AUTO REPAIR, SERVICES, AND GARAGES	22,747
76	MISCELLANEOUS REPAIR SERVICES	2,326
80	HEALTH SERVICES	339,980	267,136
84	MUSEUMS, BOTANICAL, ZOOLOGICAL GARDENS	1,035	338
TOTAL		901,781	360,988

*(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.