SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
20	FOOD AND KINDRED PRODUCTS	48,150	14,247
28	CHEMICALS AND ALLIED PRODUCTS	2,456	37
41	LOCAL AND INTERURBAN PASSENGER TRANSIT	650
47	TRANSPORTATION SERVICES	1,333	1,075
73	BUSINESS SERVICES	3,270	915
80	HEALTH SERVICES	16
TOTAL		55,874	16,274

*(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.