National Occupational Exposure Survey
(1981 - 1983)

Estimated Percentages of Controlled and Uncontrolled Potential Exposures to Specific Agents by Occupation within 2-Digit Standard Industrial Classification (SIC)*

Agent Name ZINC CYANIDE
CAS # 557-21-1
RTECS # ZH1575000 
Agent Code 80720

PRIMARY METAL INDUSTRIES (SIC 33)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
544 MILLWRIGHTS 0.0%
0.0%
0.0%
0.0%
100.0%
37
633 SUPERVISORS, PRODUCTION OCCUPATIONS 0.0%
0.0%
0.0%
100.0%
0.0%
37
723 METAL PLATING MACHINE OPERATORS 82.3%
0.0%
0.0%
17.7%
0.0%
842
796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 100.0%
0.0%
0.0%
0.0%
0.0%
187
SUBTOTAL 79.7%
0.0%
0.0%
16.8%
3.3%
1,103
FABRICATED METAL PRODUCTS (SIC 34)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
216 ENGINEERING TECHNICIANS, N.E.C. 48.2%
0.0%
51.8%
0.0%
0.0%
55
633 SUPERVISORS, PRODUCTION OCCUPATIONS 48.2%
0.0%
51.8%
0.0%
0.0%
111
709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
289
723 METAL PLATING MACHINE OPERATORS 30.2%
0.0%
38.0%
31.8%
0.0%
8,258
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 0.0%
0.0%
100.0%
0.0%
0.0%
170
873 PRODUCTION HELPERS 0.0%
0.0%
50.0%
50.0%
0.0%
905
878 MACHINE FEEDERS AND OFFBEARERS 100.0%
0.0%
0.0%
0.0%
0.0%
1,155
887 VEHICLE WASHERS AND EQUIPMENT CLEANERS 100.0%
0.0%
0.0%
0.0%
0.0%
289
SUBTOTAL 38.3%
0.0%
34.2%
27.4%
0.0%
11,232
MACHINERY, EXCEPT ELECTRICAL (SIC 35)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
723 METAL PLATING MACHINE OPERATORS 0.0%
0.0%
63.4%
36.6%
0.0%
635
SUBTOTAL 0.0%
0.0%
63.4%
36.6%
0.0%
635
ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
723 METAL PLATING MACHINE OPERATORS 25.9%
0.0%
68.7%
5.4%
0.0%
789
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 0.0%
0.0%
50.0%
50.0%
0.0%
63
783 WELDERS AND CUTTERS 0.0%
0.0%
33.3%
33.3%
33.3%
583
796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 0.0%
0.0%
75.1%
24.9%
0.0%
23
SUBTOTAL 14.0%
0.0%
53.8%
18.7%
13.3%
1,458
INSTRUMENTS AND RELATED PRODUCTS (SIC 38)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
235 TECHNICIANS, N.E.C. 0.0%
0.0%
100.0%
0.0%
0.0%
1,196
719 MOLDING AND CASTING MACHINE OPERATORS 0.0%
0.0%
100.0%
0.0%
0.0%
1,099
723 METAL PLATING MACHINE OPERATORS 0.0%
0.0%
73.6%
26.4%
0.0%
3,769
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 0.0%
0.0%
0.0%
100.0%
0.0%
36
SUBTOTAL 0.0%
0.0%
83.0%
16.9%
0.0%
6,100
MISCELLANEOUS MANUFACTURING INDUSTRIES (SIC 39)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
723 METAL PLATING MACHINE OPERATORS 0.0%
0.0%
0.0%
100.0%
0.0%
1,088
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 0.0%
0.0%
66.7%
33.3%
0.0%
2,229
SUBTOTAL 0.0%
0.0%
44.8%
55.1%
0.0%
3,317
TOTAL 22.6%
0.0%
48.6%
27.8%
0.9%
23,845
RELATED PAGES: Estimates by SIC, Estimates by Occupation, Estimates by Occupation within SIC
ABBREVIATIONS:
Resp Prot = Respiratory Protection
Other PPE = Personal Protective Equipment Other Than Respiratory Protection
Vent = Ventilation

*(1) The estimates for each occupation apply only to the 3- and 4-digit SICs surveyed within the 2-digit SIC where the agent was observed. Not all SICs were surveyed, and not all agents were observed in all surveyed SICs. (2) When using the estimated numbers of exposures, 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. (4) For a given occupation, the estimated number of potential exposures is not necessarily equal to the estimated total number of potentially exposed workers. For example, a worker may be exposed to the same agent from multiple sources; thus, it is not the worker that is controlled but the exposure. (5) The presence or absence of controls does not imply that controls are necessary or required. The estimates and the controls are strictly based on observations associated with potential exposures.

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