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 LANTHANUM OXIDE (LA2O3)
CAS # 1312-81-8
RTECS #  
Agent Code X2060

STONE, CLAY, AND GLASS PRODUCTS (SIC 32)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
216 ENGINEERING TECHNICIANS, N.E.C. 25.0%
0.0%
0.0%
0.0%
75.0%
67
677 OPTICAL GOODS WORKERS 0.0%
0.0%
0.0%
0.0%
100.0%
503
709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 34.4%
0.0%
0.0%
0.0%
65.6%
2,683
779 MACHINE OPERATORS, NOT SPECIFIED 0.0%
0.0%
0.0%
0.0%
100.0%
1,207
789 HAND PAINTING, COATING, AND DECORATING OCCUPATIONS 100.0%
0.0%
0.0%
0.0%
0.0%
299
SUBTOTAL 26.0%
0.0%
0.0%
0.0%
73.9%
4,759
ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
213 ELECTRICAL AND ELECTRONIC TECHNICIANS 100.0%
0.0%
0.0%
0.0%
0.0%
69,373
453 JANITORS AND CLEANERS 33.3%
0.0%
33.3%
33.3%
0.0%
1,848
709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
99
785 ASSEMBLERS 0.0%
0.0%
50.0%
50.0%
0.0%
1,035
SUBTOTAL 96.8%
0.0%
1.5%
1.5%
0.0%
72,355
TRANSPORTATION EQUIPMENT (SIC 37)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
214 INDUSTRIAL ENGINEERING TECHNICIANS 100.0%
0.0%
0.0%
0.0%
0.0%
14
SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
14
INSTRUMENTS AND RELATED PRODUCTS (SIC 38)
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%
110
644 PRECISION GRINDERS, FITTERS, AND TOOL SHARPENERS 0.0%
0.0%
100.0%
0.0%
0.0%
65
677 OPTICAL GOODS WORKERS 100.0%
0.0%
0.0%
0.0%
0.0%
1,239
709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
662
SUBTOTAL 96.8%
0.0%
3.1%
0.0%
0.0%
2,076
HEALTH SERVICES (SIC 80)
Code Occupation Description (1980) No
Control
Resp
Prot
Other
PPE

Vent
Other
Control

Exposures
203 CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS 0.0%
0.0%
0.0%
100.0%
0.0%
22
SUBTOTAL 0.0%
0.0%
0.0%
100.0%
0.0%
22
TOTAL 92.5%
0.0%
1.5%
1.4%
4.4%
79,226
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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