SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
17	SPECIAL TRADE CONTRACTORS	7,430	645
20	FOOD AND KINDRED PRODUCTS	276	276
28	CHEMICALS AND ALLIED PRODUCTS	74	74
30	RUBBER AND MISC. PLASTICS PRODUCTS	6,552	4,668
32	STONE, CLAY, AND GLASS PRODUCTS	593
36	ELECTRIC AND ELECTRONIC EQUIPMENT	17	11
37	TRANSPORTATION EQUIPMENT	290	120
48	COMMUNICATION	2,760	1,533
51	WHOLESALE TRADE - NONDURABLE GOODS	352	352
TOTAL		18,344	7,680

*(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.