SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
20	FOOD AND KINDRED PRODUCTS	29	29
29	PETROLEUM AND COAL PRODUCTS	81	74
35	MACHINERY, EXCEPT ELECTRICAL	23	23
36	ELECTRIC AND ELECTRONIC EQUIPMENT	26	26
80	HEALTH SERVICES	9,113	8,763
TOTAL		9,273	8,916

*(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.