Document NnZyoDmNEVEwk7gaQGZLKm8E

R Kehoe'/ P. J. Schroeter September 27, 1957 Mr. Ronald D. Macfarlane Department of Chemistry CARNEGIE INSTITCTE OP TECHNOLOGY Schenley Paris Pittsburgh 13, Pennsylvania Itear Mr. Macfsriane: As requested in your recent letter, we are shipping this date 10 grains of tetramethyllead via Railway Express. la order to adhere to our Company's safety regulations, we must have a signed release concerning the use of this toxic material end have, therefore, enclosed a copy to be signed and returned to us at your earliest convenience. A booklet pertain ing to our precautions for handling organic lead compounds in laboratories is also enclosed for your study. If ve may be of further service, please feel free to call upon us at any time. Very truly yours. ETHYL CORPORATION 'P Sugiaato, Supervisor ^ Process Development Enel: 2 K& 0009823