Document 8204O1898jxqQR1DRVkY1OO2Z

M INTERNAL. CORRESPONDENCE CHEMICALS AMD PLASTICS rDM Paul W. McDaniel 4th Ploor NYC cm* P. 0. SOX K, KING CITY. CALIFORNIA 93930 January 11, 1968 OrigbilbfOal Aanrarisg Jalfar dote t.Afed Dear Paul: Enclosed la a copy of an article from the San Francisco Chronicle re mesothelioma and asbestos. I would be interested in your reaction. Is 5 MMPCP still considered good enough, or should- we go to remote-controlled equipment and air-line masks like the nuclear industry uses? I've seen one article which Implies that croeldollte may be the harmful variety rather than chrysotlle. Have you anything on comparative toxicology of various species of asbestos? Very truly yours. J. A. Riddle JAR/j cb Enc: TfitS /S P S*-/Ss0>1/oa//}4./&0 A/^uJSr/?/>& S>D'&Y' JV07- A/CSS&e /Z.y 778u-. kJe /4<e, tfouje^se, Cs/caz:/a;* /*r Kj/>>/ osep<ze/p'H/asJ /rfaO/CAK. Z>P7T yo S{? TH&Y H*t/ 4A/Y /AJPOg/Y)/*} Y^/OAjj /9A/D uu/tl. . fknze 113US (V* i'J '\J 1 / / 6/0 & ^-/oa/aS