SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	612
16	HEAVY CONSTRUCTION CONTRACTORS	78
17	SPECIAL TRADE CONTRACTORS	688
20	FOOD AND KINDRED PRODUCTS	451
21	TOBACCO MANUFACTURERS	16
23	APPAREL AND OTHER TEXTILE PRODUCTS	465
27	PRINTING AND PUBLISHING	113
28	CHEMICALS AND ALLIED PRODUCTS	2,175	7
32	STONE, CLAY, AND GLASS PRODUCTS	148
33	PRIMARY METAL INDUSTRIES	577	16
34	FABRICATED METAL PRODUCTS	639
35	MACHINERY, EXCEPT ELECTRICAL	9,573	5,471
36	ELECTRIC AND ELECTRONIC EQUIPMENT	10,434	6,896
37	TRANSPORTATION EQUIPMENT	1,221	603
38	INSTRUMENTS AND RELATED PRODUCTS	4,687	3,342
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	550
45	TRANSPORTATION BY AIR	2,890
48	COMMUNICATION	6,298
49	ELECTRIC, GAS, AND SANITARY SERVICES	1,879	21
73	BUSINESS SERVICES	261
76	MISCELLANEOUS REPAIR SERVICES	7,884
80	HEALTH SERVICES	1,822	384
TOTAL		53,611	16,742

*(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.