SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
17	SPECIAL TRADE CONTRACTORS	1,851
28	CHEMICALS AND ALLIED PRODUCTS	4,730	3,829
29	PETROLEUM AND COAL PRODUCTS	1,795	161
30	RUBBER AND MISC. PLASTICS PRODUCTS	1,069	69
72	PERSONAL SERVICES	17,387	12,660
80	HEALTH SERVICES	1,936	1,924
TOTAL		28,769	18,644

*(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.