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 W, TUNGSTEN-PURE
CAS # 7440-33-7
RTECS # YO7175000 
Agent Code X5928

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

Vent
Other
Control

Exposures
216 ENGINEERING TECHNICIANS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
126
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
126
ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
453 JANITORS AND CLEANERS 100.0%
0.0%
0.0%
0.0%
0.0%
1,554
633 SUPERVISORS, PRODUCTION OCCUPATIONS 100.0%
0.0%
0.0%
0.0%
0.0%
1,036
703 LATHE AND TURNING MACHINE SET-UP OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
259
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
1,477
785 ASSEMBLERS 100.0%
0.0%
0.0%
0.0%
0.0%
544
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
4,870
TRANSPORTATION EQUIPMENT (SIC 37)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
057 MECHANICAL ENGINEERS 25.0%
0.0%
50.0%
25.0%
0.0%
1,534
515 AIRCRAFT MECHANICS, EXC. ENGINE 0.0%
0.0%
0.0%
0.0%
100.0%
567
637 MACHINISTS 25.0%
0.0%
50.0%
25.0%
0.0%
341
706 PUNCHING AND STAMPING PRESS MACHINE OPERATORS 25.0%
0.0%
50.0%
25.0%
0.0%
568
783 WELDERS AND CUTTERS 0.0%
0.0%
100.0%
0.0%
0.0%
44
SUBTOTAL 19.9%
0.0%
41.4%
19.9%
18.5%
3,054
TOTAL 69.6%
0.0%
15.7%
7.5%
7.0%
8,050
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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