SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	649	50
15	GENERAL BUILDING CONTRACTORS	6,474
16	HEAVY CONSTRUCTION CONTRACTORS	4,246	75
17	SPECIAL TRADE CONTRACTORS	14,117
20	FOOD AND KINDRED PRODUCTS	541
22	TEXTILE MILL PRODUCTS	823	35
24	LUMBER AND WOOD PRODUCTS	2,892
26	PAPER AND ALLIED PRODUCTS	5,622
27	PRINTING AND PUBLISHING	2,074
28	CHEMICALS AND ALLIED PRODUCTS	4,044	189
29	PETROLEUM AND COAL PRODUCTS	2,985
30	RUBBER AND MISC. PLASTICS PRODUCTS	638
33	PRIMARY METAL INDUSTRIES	1,146
34	FABRICATED METAL PRODUCTS	883
35	MACHINERY, EXCEPT ELECTRICAL	5,408	63
36	ELECTRIC AND ELECTRONIC EQUIPMENT	3,779	407
37	TRANSPORTATION EQUIPMENT	12,652	54
38	INSTRUMENTS AND RELATED PRODUCTS	165
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	584
41	LOCAL AND INTERURBAN PASSENGER TRANSIT	2,267
42	TRUCKING AND WAREHOUSING	4,424
45	TRANSPORTATION BY AIR	2,357
49	ELECTRIC, GAS, AND SANITARY SERVICES	16,458	172
50	WHOLESALE TRADE - DURABLE GOODS	3,550	81
51	WHOLESALE TRADE - NONDURABLE GOODS	1,359
55	AUTOMOTIVE DEALERS & SERVICE STATIONS	3,240
72	PERSONAL SERVICES	213
73	BUSINESS SERVICES	476
75	AUTO REPAIR, SERVICES, AND GARAGES	11,180
76	MISCELLANEOUS REPAIR SERVICES	1,380
80	HEALTH SERVICES	539
TOTAL		117,167	1,125

*(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.