Document qdwy3E5QpngZ57YyXQOyQbnVK

St. Louis Post-Dispatch July 17, 1970 City Edition Chemical's Use Is Restricted By Monsanto Monsanto Co., the only United producer of polychlorinated bi phenyl (PCB), has taken steps to restrict use of the industrial chemical. Howard L. Minckler, a Mon santo vice president, said the restriction program was begun voluntarily two yenrs ago be cause ol evidence that "PBC Is a persistent chemical which | builds up in the environment.", lie denied thnl the action was1 taken because of recent reports that PCB can induce birth de fects in laboratory animols. He said that PCB toxicity studies sponsoreds by Monsanto had | failed to produce such effects. Theonly reason for the St. Louts Item's ection is because it is a persistent chemical, he said; PCD was developed for use as a* coolant in electrical trans formers and In heating and cool ing systems. Minckler said Mon santo would continue to sell PCB for use in such closed sys tems. However, it is discontinuing sales of the chemical in socalled open systems like ad hesives, sealants, rubber com pounds and paints. HONS 031481