National Occupational Exposure Survey
(1981 - 1983)

Estimated Numbers of Employees Potentially Exposed to Specific Agents by Occupation within 2-Digit Standard Industrial Classification (SIC)*

Agent Name SILICON, DUST
CAS # 7440-21-3
RTECS #  
Agent Code X4229

ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
069 PHYSICISTS AND ASTRONOMERS 674
135
235 TECHNICIANS, N.E.C. 74

709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 221
61
769 SLICING AND CUTTING MACHINE OPERATORS 699
233
799 GRADERS AND SORTERS, EXCEPT AGRICULTURAL 74
74
SUBTOTAL 1,742
503
TOTAL 1,742 503
RELATED PAGES: Estimates by SIC, Estimates by Occupation

*(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 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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