SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
20	FOOD AND KINDRED PRODUCTS	2,821
30	RUBBER AND MISC. PLASTICS PRODUCTS	774	74
33	PRIMARY METAL INDUSTRIES	720
34	FABRICATED METAL PRODUCTS	837
36	ELECTRIC AND ELECTRONIC EQUIPMENT	262	131
38	INSTRUMENTS AND RELATED PRODUCTS	289	106
48	COMMUNICATION	14,687
49	ELECTRIC, GAS, AND SANITARY SERVICES	471
80	HEALTH SERVICES	363	244
TOTAL		21,225	555

*(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.