Document 37kJJOzXORJpw4Xz38Z8Gwp16

e-oo i7-7 December 29, 1970 ^ Nr. ward Stephenson ' Stephenson end Shoqpsen Stephenson luildiag 712 Division Street Orange, Texas 77620 Dear Mr. Stephensont Your letter to Dr. John A. Sapp, Jr. inquiring about hygienic standards for the inhalation of asbestos dust has been referred to as. Dr. Zapp participates in the work of the Z37 Cowittee on Acceptable Concentrations of Oases and Dusts of ths American nations! standards Institute (AHSX). Beither AB82 nor its prods- ' cessors, ths Oh sited State* of America Standards Institute end American Standards Association has ever recommended an acceptable {concentration of asbestos dust in the air. .A A history of Hygienic standards for Asbestos is givtn n the paper with that titla by I. A. loach. Annals of Oecupa- ~ tional HygieSnheo, pVeotluhmaet t1h3i,sPwp. il7l-1s5a,tis19fy70y, oeuorpnyeoedf sw. h. icXhf nisot, ;Vr paltetaacsheedle. t me know. s'* ^ \ -iy" Very truly yours, *7 A . or,<3|nal s.gnco b> James a. mohga.n JPH/bjd Xnoloeure James r. Morgan 4Z2 tr:V .* DUP 0901678 SC-DP-03250