Document 2qDoDD4qvR3j05GokLJR3e00R

FILE NAME: US Gypsum (USG) DATE: May 5, 1937 DOC#: USG024 DOCUMENT DESCRIPTION: 1937 Letter to G King regarding Seranac lab study of asbestosis. i.'-r& J- --------- -- 134 i^ ( i , a(' r ic e , J c o tt, LacLoich <i ralJ> La S alle Street' Chicago, .ris U nited States Gypsum C ompany 4 Vv ; c m ic a o o O C T A O IT 300 W EST ADAMS STREET MCW VOUK O ftTO N u rra te ^M IU O IV tN tA WAAlt>tMH IO* if6tCT O l C ltV C L A M O C IN C IN N A T I IND IA NA POLIS ATLANTA SIAM IN CM AN Chicago - Hay 5 , 1937 IS*. G. D. King Research llanttger 3. R, Laboratories Chicago f n -' A tte n tio n * Hr* C. C. S chuets The S aranac L ab o rato ry o f Sar&nao. Ijow York, i s making a th r e e year study o f asb esto eis. Ihey aro in v e stig a tin g in p articu l a r th e e ffe c t on guinea p ig s of breathing asbestos dust "'e u n d erstan d th a t th e d u st b eing used i s composed o f pure fib ro u s asbestos, fre e fro n a l l cerpontinc recic and o th er fo reig n p a r tic le s , ground a3 fin e as p o ssib le and then b all juXj le d i t I s su p p lie d by Jo h n s--iia n y llle f r o n t h e i r C anadies n in e s in th e D anville se c tio n o f th e Province of Quebec, I n crc-or t h a t vn can i n t e r p r e t r e s u l t s o b ta in e d , we would appreciate your advising us i f the various tynes of asbestos \79 uso u v u la v a ry i n c h e a ic a l com position o r p h y sic a l c h a r a c te r i s t i c s (v/iien ground and b a l l m ille d ) from the* Jo h n s -Iia n v ille asbestos being used in th is investigation