SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
20	FOOD AND KINDRED PRODUCTS	274	91
28	CHEMICALS AND ALLIED PRODUCTS	1,189	787
32	STONE, CLAY, AND GLASS PRODUCTS	69
35	MACHINERY, EXCEPT ELECTRICAL	35
36	ELECTRIC AND ELECTRONIC EQUIPMENT	560	224
72	PERSONAL SERVICES	2,898
TOTAL		5,025	1,102

*(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.