National Occupational Exposure Survey
(1981 - 1983)

Estimated Numbers of Employees Potentially Exposed to Specific Agents by Occupation*

Agent Name UREA, 1,3-DIETHYL-2-THIO-
CAS # 105-55-5
RTECS # YS9800000
Agent Code 84809

Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
059 ENGINEERS, N.E.C. 61  
095 REGISTERED NURSES 31 31
208 HEALTH TECHNOLOGISTS AND TECHNICIANS, N.E.C. 31 31
224 CHEMICAL TECHNICIANS 44  
365 STOCK AND INVENTORY CLERKS 278 243
374 MATERIAL RECORDING, SCHEDULING, AND DISTRIBUTING CLERKS, N.E.C. 5  
453 JANITORS AND CLEANERS 937  
519 MACHINERY MAINTENANCE OCCUPATIONS 137  
534 HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS 12  
544 MILLWRIGHTS 135  
585 PLUMBERS, PIPEFITTERS, AND STEAMFITTERS 21  
633 SUPERVISORS, PRODUCTION OCCUPATIONS 253  
637 MACHINISTS 1,362  
643 BOILERMAKERS 141  
678 DENTAL LABORATORY AND MEDICAL APPLIANCE TECHNICIANS 948 316
696 STATIONARY ENGINEERS 91  
707 ROLLING MACHINE OPERATORS 1,031  
723 METAL PLATING MACHINE OPERATORS 1,804  
724 HEAT TREATING EQUIPMENT OPERATORS 10  
756 MIXING AND BLENDING MACHINE OPERATORS 231  
766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 188  
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 2,215 27
779 MACHINE OPERATORS, NOT SPECIFIED 361 37
796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 52  
849 CRANE AND TOWER OPERATORS 27  
873 PRODUCTION HELPERS 226  
878 MACHINE FEEDERS AND OFFBEARERS 135 54
887 VEHICLE WASHERS AND EQUIPMENT CLEANERS 716  
TOTAL 11,484 739

*(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.

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