SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
16	HEAVY CONSTRUCTION CONTRACTORS	1,766
17	SPECIAL TRADE CONTRACTORS	2,798
20	FOOD AND KINDRED PRODUCTS	1,334
22	TEXTILE MILL PRODUCTS	1,780
26	PAPER AND ALLIED PRODUCTS	1,092
30	RUBBER AND MISC. PLASTICS PRODUCTS	452
32	STONE, CLAY, AND GLASS PRODUCTS	194
33	PRIMARY METAL INDUSTRIES	7,779	81
34	FABRICATED METAL PRODUCTS	1,731
35	MACHINERY, EXCEPT ELECTRICAL	8,825
36	ELECTRIC AND ELECTRONIC EQUIPMENT	14
37	TRANSPORTATION EQUIPMENT	556	28
40	RAILROAD TRANSPORTATION	436
45	TRANSPORTATION BY AIR	207
49	ELECTRIC, GAS, AND SANITARY SERVICES	997
50	WHOLESALE TRADE - DURABLE GOODS	546
72	PERSONAL SERVICES	32
76	MISCELLANEOUS REPAIR SERVICES	7,169
TOTAL		37,708	109

*(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.