SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
17	SPECIAL TRADE CONTRACTORS	9,443
20	FOOD AND KINDRED PRODUCTS	528
23	APPAREL AND OTHER TEXTILE PRODUCTS	272
26	PAPER AND ALLIED PRODUCTS	327
28	CHEMICALS AND ALLIED PRODUCTS	240
32	STONE, CLAY, AND GLASS PRODUCTS	1,249
33	PRIMARY METAL INDUSTRIES	3,232	417
34	FABRICATED METAL PRODUCTS	3,997	150
35	MACHINERY, EXCEPT ELECTRICAL	7,078	298
36	ELECTRIC AND ELECTRONIC EQUIPMENT	525
37	TRANSPORTATION EQUIPMENT	5,777	79
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	310
40	RAILROAD TRANSPORTATION	480
42	TRUCKING AND WAREHOUSING	1,734	2
44	WATER TRANSPORTATION	10,284	88
48	COMMUNICATION	2,013	387
50	WHOLESALE TRADE - DURABLE GOODS	722
TOTAL		48,209	1,420

*(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.