SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	8,604
15	GENERAL BUILDING CONTRACTORS	12,914
16	HEAVY CONSTRUCTION CONTRACTORS	19,825	75
17	SPECIAL TRADE CONTRACTORS	158,291	77
20	FOOD AND KINDRED PRODUCTS	28,935	626
21	TOBACCO MANUFACTURERS	10
22	TEXTILE MILL PRODUCTS	4,244	149
23	APPAREL AND OTHER TEXTILE PRODUCTS	575
24	LUMBER AND WOOD PRODUCTS	3,845	601
25	FURNITURE AND FIXTURES	2,231	36
26	PAPER AND ALLIED PRODUCTS	22,104	603
27	PRINTING AND PUBLISHING	10,028	616
28	CHEMICALS AND ALLIED PRODUCTS	22,950	463
29	PETROLEUM AND COAL PRODUCTS	8,063	483
30	RUBBER AND MISC. PLASTICS PRODUCTS	11,803	275
31	LEATHER AND LEATHER PRODUCTS	48
32	STONE, CLAY, AND GLASS PRODUCTS	19,354	1,986
33	PRIMARY METAL INDUSTRIES	57,624	1,335
34	FABRICATED METAL PRODUCTS	101,335	13,533
35	MACHINERY, EXCEPT ELECTRICAL	112,965	16,653
36	ELECTRIC AND ELECTRONIC EQUIPMENT	47,272	16,831
37	TRANSPORTATION EQUIPMENT	57,593	2,174
38	INSTRUMENTS AND RELATED PRODUCTS	23,755	8,094
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	13,566	3,596
40	RAILROAD TRANSPORTATION	44
41	LOCAL AND INTERURBAN PASSENGER TRANSIT	626
42	TRUCKING AND WAREHOUSING	7,955	25
44	WATER TRANSPORTATION	5,558
45	TRANSPORTATION BY AIR	20,569	256
48	COMMUNICATION	6,637
49	ELECTRIC, GAS, AND SANITARY SERVICES	15,972
50	WHOLESALE TRADE - DURABLE GOODS	11,673	40
51	WHOLESALE TRADE - NONDURABLE GOODS	3,335
55	AUTOMOTIVE DEALERS & SERVICE STATIONS	6,767	427
73	BUSINESS SERVICES	9,179	882
75	AUTO REPAIR, SERVICES, AND GARAGES	47,945
76	MISCELLANEOUS REPAIR SERVICES	26,088
80	HEALTH SERVICES	8,433	2,821
84	MUSEUMS, BOTANICAL, ZOOLOGICAL GARDENS	1,643	164
TOTAL		920,449	72,821

*(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.