Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
048	CHEMICAL ENGINEERS	16
073	CHEMISTS, EXCEPT BIOCHEMISTS	177
075	GEOLOGISTS AND GEODESISTS	28
213	ELECTRICAL AND ELECTRONIC TECHNICIANS	297
216	ENGINEERING TECHNICIANS, N.E.C.	30
224	CHEMICAL TECHNICIANS	1,110	118
225	SCIENCE TECHNICIANS, N.E.C.	346	105
356	MAIL CLERKS, EXC. POSTAL SERVICE	98	14
453	JANITORS AND CLEANERS	1,830
516	HEAVY EQUIPMENT MECHANICS	3,129	75
534	HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS	3,199
535	CAMERA, WATCH, AND MUSICAL INSTRUMENT REPAIRERS	19
575	ELECTRICIANS	26,318	244
576	ELECTRICIAN APPRENTICES	368
577	ELECTRICAL POWER INSTALLERS AND REPAIRERS	3,653
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	308
633	SUPERVISORS, PRODUCTION OCCUPATIONS	109
637	MACHINISTS	980
696	STATIONARY ENGINEERS	62
699	MISCELLANEOUS PLANT AND SYSTEM OPERATORS	28
706	PUNCHING AND STAMPING PRESS MACHINE OPERATORS	3
734	PRINTING MACHINE OPERATORS	1,209	725
744	TEXTILE SEWING MACHINE OPERATORS	47
754	PACKAGING AND FILLING MACHINE OPERATORS	384
756	MIXING AND BLENDING MACHINE OPERATORS	4,856
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	7
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	115	87
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	151
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	2,150	43
779	MACHINE OPERATORS, NOT SPECIFIED	78
785	ASSEMBLERS	178
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	192
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	162
869	CONSTRUCTION LABORERS	332
TOTAL		51,971	1,410

*(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.