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RECFIVED JUN 24 1925 HERBERT N. MC COY 1623 HYDE PARK BOUL. CHICAGO,ILL. Dear m. Rorder: gener if 22 1925 UNITEB STATES I seuk you a long telegram GORP. last might which you doubtless will have received long before this Maches you I han frin very busy since d got home a work ago, otheraise d should have written somer. I had a datis factory visit ax Pitts burgh. Before writing you in full about the possible effect of radiation on refiners of Ra etc., d wanted to read & digest some find the 30r4 papers to which Viol called my allention (one by himself). Viol told me they had had no trouble about dial painters and nothing more than finger burns in the case of crystallizers. HE told me how they test the condition of people exposed to radiation. I will write you about this later.