SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	2,468
15	GENERAL BUILDING CONTRACTORS	654
17	SPECIAL TRADE CONTRACTORS	378
20	FOOD AND KINDRED PRODUCTS	185
22	TEXTILE MILL PRODUCTS	1,173	442
24	LUMBER AND WOOD PRODUCTS	257
26	PAPER AND ALLIED PRODUCTS	108
28	CHEMICALS AND ALLIED PRODUCTS	3,272	209
30	RUBBER AND MISC. PLASTICS PRODUCTS	1,534	1,168
32	STONE, CLAY, AND GLASS PRODUCTS	1,316
33	PRIMARY METAL INDUSTRIES	510
34	FABRICATED METAL PRODUCTS	1,525	912
35	MACHINERY, EXCEPT ELECTRICAL	4,413	1,407
36	ELECTRIC AND ELECTRONIC EQUIPMENT	2,536	1,978
37	TRANSPORTATION EQUIPMENT	5,318	492
38	INSTRUMENTS AND RELATED PRODUCTS	24
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	2,153	967
42	TRUCKING AND WAREHOUSING	616
45	TRANSPORTATION BY AIR	4,709
55	AUTOMOTIVE DEALERS & SERVICE STATIONS	1,312
73	BUSINESS SERVICES	7
TOTAL		34,469	7,576

*(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.