Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
189	PHOTOGRAPHERS	1,007
195	EDITORS AND REPORTERS	102
206	RADIOLOGIC TECHNICIANS	1,422	1,052
216	ENGINEERING TECHNICIANS, N.E.C.	233
453	JANITORS AND CLEANERS	770	36
549	NOT SPECIFIED MECHANICS AND REPAIRERS	91
633	SUPERVISORS, PRODUCTION OCCUPATIONS	793
735	PHOTOENGRAVERS AND LITHOGRAPHERS	686	28
774	PHOTOGRAPHIC PROCESS MACHINE OPERATORS	3,401	106
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	329
783	WELDERS AND CUTTERS	326
784	SOLDERERS AND BRAZERS	14
785	ASSEMBLERS	524
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	679
TOTAL		10,379	1,222

*(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.