SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
15	GENERAL BUILDING CONTRACTORS	3,788
16	HEAVY CONSTRUCTION CONTRACTORS	456
17	SPECIAL TRADE CONTRACTORS	2,573
20	FOOD AND KINDRED PRODUCTS	380
22	TEXTILE MILL PRODUCTS	4,847	141
23	APPAREL AND OTHER TEXTILE PRODUCTS	86	86
24	LUMBER AND WOOD PRODUCTS	2,540	355
27	PRINTING AND PUBLISHING	768
28	CHEMICALS AND ALLIED PRODUCTS	864
30	RUBBER AND MISC. PLASTICS PRODUCTS	4,042	2,262
31	LEATHER AND LEATHER PRODUCTS	1,095	783
32	STONE, CLAY, AND GLASS PRODUCTS	319	73
33	PRIMARY METAL INDUSTRIES	13
34	FABRICATED METAL PRODUCTS	3,118	888
35	MACHINERY, EXCEPT ELECTRICAL	9,841	4,057
36	ELECTRIC AND ELECTRONIC EQUIPMENT	5,187	1,920
37	TRANSPORTATION EQUIPMENT	9,342	679
38	INSTRUMENTS AND RELATED PRODUCTS	3,623	1,879
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	279	116
40	RAILROAD TRANSPORTATION	22
44	WATER TRANSPORTATION	774
45	TRANSPORTATION BY AIR	10,024	57
49	ELECTRIC, GAS, AND SANITARY SERVICES	6,453	119
80	HEALTH SERVICES	7,035	6,991
TOTAL		77,470	20,408

*(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.