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A 33-page U.S. Bureau of Mines Information Circular of June 1950 listing every respirator and gas mask the Bureau had approved, by type, with approval numbers, makers and dates. Its section on dust respirators lists devices from Mine Safety Appliances, Willson Products, Pulmosan and others approved since 1935 "only for protection against the inhalation of pneumoconiosis- (silicosis- and asbestosis-) producing dusts" and nuisance dusts.
- Author
- S. J. Pearce; L. B. Berger
- Published by
- U.S. Bureau of Mines
- Agency
- Bureau of Mines
- Date
- June 1950
- Library no.
- ACL Doc 25217 · asbestosclaims.law/library/25217
- Rights
- US government work, in the public domain.
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Read online Download the PDF Information Circular 7570, June 1950 · 1.7 MB
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Cite this document
“S. J. Pearce and L. B. Berger, List of Respiratory Protective Devices Approved by the Bureau of Mines, Information Circular 7570.” June 1950. U.S. Bureau of Mines. AsbestosClaims.Law Library, ACL Doc 25217. https://asbestosclaims.law/library/25217.
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