Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
073	CHEMISTS, EXCEPT BIOCHEMISTS	250	250
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	2,616	1,568
216	ENGINEERING TECHNICIANS, N.E.C.	7
243	SUPERVISORS AND PROPRIETORS, SALES OCCUPATIONS	307
365	STOCK AND INVENTORY CLERKS	180	155
446	HEALTH AIDES, EXCEPT NURSING	235	139
453	JANITORS AND CLEANERS	5,761	31
505	AUTOMOBILE MECHANICS	29,015
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	639	8
508	AIRCRAFT ENGINE MECHANICS	2,015
515	AIRCRAFT MECHANICS, EXC. ENGINE	1,064
516	HEAVY EQUIPMENT MECHANICS	1,042
518	INDUSTRIAL MACHINERY REPAIRERS	332
519	MACHINERY MAINTENANCE OCCUPATIONS	57
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	1,506
549	NOT SPECIFIED MECHANICS AND REPAIRERS	5,580	14
563	BRICKMASONS AND STONEMASONS	185
579	PAINTERS, CONSTRUCTION AND MAINTENANCE	132
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	11
785	ASSEMBLERS	1,217	21
804	TRUCK DRIVERS, HEAVY	307
844	OPERATING ENGINEERS	3,219
883	FREIGHT, STOCK, AND MATERIAL MOVERS, HAND, N.E.C.	216
TOTAL		55,891	2,185

*(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.