I II HISTORICAL SUMMARY OP PCB ENVIRONMENTAL ISSUE r By !

7 1 York, Binghamton, New York; Master's degree in 2 radiation biology, University of Rochester in New 3 York in 1955.

NEWS OR R E LEA SE IMMEDIATELY SUBJECT TO PROTECTIVE ORDER.

*' *' M onsanto Chemical C ompany St .

Tabic 0.

V XI.

HA 7 ^^* M arch 20, 1957 H alogen D erivatives of D ibenzo-P-dioxin 1409 ( k>ncd abnve was added dropwue to a 300-ml. ether solution with that of tbe sample of the trimer obtained by the hy of phenyllithium , which had been made from 110 [. (0.70 drolysis of pbcnylbromosilane.

V s t ^ 5 /O S * JOT'S / . . . t ---- : r * r y ~ '" > r r " ` T ' - o p u i D'JZ TC TRiCHLORPKZNGL Persons Present: Dr.

C o m m e n t a r ie s .*** Reconciling Old and New Findings on Dioxin James J.

responsibilities of a navigator of a C-123 airplane during herbicide operations in Vietnam; the duties and responsibilities of a targeting officer for herbicide operations in Vietnam; the health experience of persons in Vietnam who used or were otherwise exposed to herbicides containing 2,4,5-T. 23.

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FROM L E R I T Z , P L U N K E R T , AND B R U H I N S 11. 15.1953 16:51 J0 9 E P H L LC IT t MOMAS J.

O t.% * --- *From M onsanto Ch em ica l Com pany At- S t .

NEWS FOR RELEASE IMMEDIATELY SUBJECT TO PROTECTIVE ORDER.

cu Q December 10, 1957 11Q0 In the vear 1899 Carl Herxheimer first described acnefo tions in persons exposed to chlorinated compounds.