SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
07	AGRICULTURAL SERVICES	1,838	1,608
17	SPECIAL TRADE CONTRACTORS	1,436
28	CHEMICALS AND ALLIED PRODUCTS	100	67
35	MACHINERY, EXCEPT ELECTRICAL	637	124
36	ELECTRIC AND ELECTRONIC EQUIPMENT	132
37	TRANSPORTATION EQUIPMENT	9	9
80	HEALTH SERVICES	128,683	114,357
TOTAL		132,833	116,164

*(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.