Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
075	GEOLOGISTS AND GEODESISTS	28
189	PHOTOGRAPHERS	239
216	ENGINEERING TECHNICIANS, N.E.C.	107	53
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	493
426	GUARDS AND POLICE, EXC. PUBLIC SERVICE	140
453	JANITORS AND CLEANERS	930
534	HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS	7,630
549	NOT SPECIFIED MECHANICS AND REPAIRERS	414
575	ELECTRICIANS	9
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	629
675	HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS	232
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	62
719	MOLDING AND CASTING MACHINE OPERATORS	221	125
756	MIXING AND BLENDING MACHINE OPERATORS	32
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	51	51
779	MACHINE OPERATORS, NOT SPECIFIED	811	255
785	ASSEMBLERS	3,108	603
789	HAND PAINTING, COATING, AND DECORATING OCCUPATIONS	374	187
TOTAL		15,511	1,274

*(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.