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X UNITED STATES DEPARTMENT OF AGRICULTURE AGRICULTURAL RESEARCH ADMINISTRATION BUREAU OF ANIMAL INDUSTRY WASHINGTON 25, D. C. ADDRESS REPLY TO "CHIEF OF BUREAU OF ANIMAL INDUSTRY" AND REFER TO YLYJune 6, 1950 fir. William E. McCormick Department of Industrial Hygiene and Toxicology The B. F. Goodrich Company Akron, Ohio Dear Dr. McCormick: This refers to your request of June 6 for approval of acetyl tributyl citrate as a plasticizer of synthetic resin materials used in federally inspected meat packing establishments. Ho objection will be made by this Division to the use of acetyl tributyl citrate as a plasticizer in synthetic resin filmB or containers used in federally inspected meat packing establishments. Very truly yours. R. M. Mehurin, Chief Laboratory Section Meat Inspection Division 20470001 BpG03604