Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
216	ENGINEERING TECHNICIANS, N.E.C.	190	57
224	CHEMICAL TECHNICIANS	329	76
336	RECORDS CLERKS	1,848	623
453	JANITORS AND CLEANERS	438
458	HAIRDRESSERS AND COSMETOLOGISTS	304	304
579	PAINTERS, CONSTRUCTION AND MAINTENANCE	1,918	51
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	135
633	SUPERVISORS, PRODUCTION OCCUPATIONS	115
734	PRINTING MACHINE OPERATORS	2,971	1,164
756	MIXING AND BLENDING MACHINE OPERATORS	1,105	175
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	268
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	442	7
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	58
774	PHOTOGRAPHIC PROCESS MACHINE OPERATORS	2,053	1,398
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	1,465	113
779	MACHINE OPERATORS, NOT SPECIFIED	280
785	ASSEMBLERS	242	44
869	CONSTRUCTION LABORERS	1,714	5
873	PRODUCTION HELPERS	576
888	HAND PACKERS AND PACKAGERS	274
889	LABORERS, EXCEPT CONSTRUCTION	34
TOTAL		16,757	4,017

*(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.