SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
20	FOOD AND KINDRED PRODUCTS	2,117	1,412
28	CHEMICALS AND ALLIED PRODUCTS	4,459	1,880
49	ELECTRIC, GAS, AND SANITARY SERVICES	1,903	740
72	PERSONAL SERVICES	976
73	BUSINESS SERVICES	7
80	HEALTH SERVICES	6,948	4,310
TOTAL		16,412	8,342

*(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.