Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
073	CHEMISTS, EXCEPT BIOCHEMISTS	476
075	GEOLOGISTS AND GEODESISTS	28
216	ENGINEERING TECHNICIANS, N.E.C.	73	73
224	CHEMICAL TECHNICIANS	463	108
453	JANITORS AND CLEANERS	1,411	36
455	PEST CONTROL OCCUPATIONS	3,732	574
696	STATIONARY ENGINEERS	185
754	PACKAGING AND FILLING MACHINE OPERATORS	68
756	MIXING AND BLENDING MACHINE OPERATORS	98
829	SAILORS AND DECKHANDS	1,650
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	215
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	62
889	LABORERS, EXCEPT CONSTRUCTION	98
TOTAL		8,559	792

*(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.