Standard Interpretations - (Archived) Table of Contents|
| Standard Number:||1910.1000|
29 CFR 1910.1000 Table Z-3
July 14, 1975
MEMORANDUM FOR: DAVID H. RHONE Assistant Regional Director, Philadelphia FROM: BARRY J. WHITE Associate Assistant Secretary for Regional Programs SUBJECT: Mass Concentration Standard for Amorphous SilicaThis is in response to your memorandum of April 29, 1975.
The formula for calculating the mass concentration exposure limit for total dust containing amorphous silica was listed incorrectly when originally promulgated under the Walsh-Healey Public Contracts Act. The correct formula is:
% Si02+ 5.33% rather than
Any questions may be directed to Gail Brinkerhoff at 202/523-8096.
|Standard Interpretations - (Archived) Table of Contents|
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