Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	439	376
216	ENGINEERING TECHNICIANS, N.E.C.	1,977	1,412
223	BIOLOGICAL TECHNICIANS	656	509
365	STOCK AND INVENTORY CLERKS	195
368	WEIGHERS, MEASURERS, AND CHECKERS	103
453	JANITORS AND CLEANERS	690
518	INDUSTRIAL MACHINERY REPAIRERS	103
633	SUPERVISORS, PRODUCTION OCCUPATIONS	33
637	MACHINISTS	880
688	FOOD BATCHMAKERS	1,521	124
696	STATIONARY ENGINEERS	130
754	PACKAGING AND FILLING MACHINE OPERATORS	163
756	MIXING AND BLENDING MACHINE OPERATORS	409
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	401
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	2,645	886
804	TRUCK DRIVERS, HEAVY	856
883	FREIGHT, STOCK, AND MATERIAL MOVERS, HAND, N.E.C.	33
888	HAND PACKERS AND PACKAGERS	951
889	LABORERS, EXCEPT CONSTRUCTION	5,823	439
TOTAL		18,009	3,747

*(1) The estimates for each occupation apply across the surveyed industries in which the agent was observed. Not all industries were surveyed, and not all agents were observed in all surveyed industries. (2) When using the estimates, standard errors associated with estimates should be considered. (3) 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.