Document wrd37v6boN7xxrXepqZ7K673E
FILE NAME: Metropolitan Life (ML)
DATE: 1934
DOC#: ML095
DOCUMENT DESCRIPTION: Dr. Lanza Correspondence RE US Public Health Service Silicosis Standard among Granite Workers with Threshold of Safety
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"The United States 'Public Health Set^Ice^et up..4-standard in a -
bulletin dealing with silicosis among the granite 'workers in B&rre of""te` n milli-on *parti-:cl' es* pT,ejr-_'ll*c:*u,b i;_c_r<fjo^o.vjtL'iE'a:. s .the__t_hrel shold of safety., This standard .referred specfica1lytb that one indsutry
and cannot be construed as to mean that five Billion particles
would,|j#vthe:;threshold If ^e: dust'^nt4d!:;7dl,''pf'ttm silica
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