Document zQ8gpq9RVDymxr3EeD4jZJ05a

FILE NAME DuPont DUP DATE 1970 Dec 16 DOC DUP115 DOCUMENT DESCRIPTION Letter from Law Office Stephenson and Thomson to Dr. John A. Zapp Jr. KEMPER W. STEPPENSON 1958 20,04 - WARD STEPHENSON MARLIN THOMPSON 20,044 Las Las offiend ofiend offiend ofiend offiend offiend ofof ofiend offiend STEPHENSON AND THOMPSON STEPHENSON BUILDING / 712 DIVISION STREET ORANGE TEXAS 77630 883-9396 1 December 16 1970 AIRMAIL Dr. John A. Zapp Jr. E.I. DuPont Nemours & Company Haskell Laboratories Wilmington Delaware 19898 Dear Dr. Zapp Your name was given to us this morning by Dr. Shield over the telephone of Industrial with the American Conference that Hygienists in Cincinnati Dr. Shield stated you were a member of a committee referred to as 34 assist us We desire to obtain as soon information or as possible ay literature concerning the standard threshold limit values on the inhalation of asbestoosr . 1940 or prior thereto up to about the year 1950 We understand that in about the year 1950 the tfhoer A thCeIHsetting of these threshold limits wasresshpiofntseidbilto ity . We will be pleased to or to pay you for any research pay anyone you might request to do this for as well as for copies of any publications us limit values recommended or threshold years mentioned by this Committee during the 4 if you If will you let will be us hear so kind from you we as will soon appreciate it as possible Yours truly Men Men Ward Stephenson J RECEIVED RECEIVED RECEIVED RECEIVED RECEIVED RECEIVED RECEIVED DEC18 1970 HASKELL LAGORATI LAGORATI HASKELL