wT IOS The New Pork Times TIMES SQUARE, NEW YORK 3, X. Y. Dr. James R, Killian, Jr. Special Assistant to the President for Science and Technology White House Washington 25, D.C, Dear Dr. Killian, As you may know, the New York Times learne< | of the plans for Argus more than six months ago -- wejl in advance of its fulfillment. The infcrmation was not obtained on an off-the-record basis. Nevertheless we were concerned at the implications of making the project public in advance, I consulted with Richard Porter, chairman of the IGY Panel on Rockets and Satellites, and as a result we were urgently requested by ARPA not to make any prjor disclosure of the project. We were given repeated assurances that we would be given sufficient prior notice of y announcement so that we should be the first to publish it. To avoid inadvertent disclosure, knowledge of the project has been limited, on the Times, to Hanson Baldwin and myself. We have consulted on the situation, from t ime to time, with officials in the Pentagon and elsewhere and understand that a policy decision was made some mohths ago not to make any disclosure about Argus. Meanwhile, however, there have been a number of developments: 1. Publication by Gristofiles of a report Christofilos Effect in terms of the injection of relativistic electrons into the region of closed of the earth's magnetic field, using a satellite electron accelerator. Methods for computing long migration time were given (University of Calif. on the lines -borne [tudinal Radiation Labcratory, Livermore, Calif. UCRL=5)07, Nov. 26 , 1958) K- an Co F? CS 2. Publication of various reports on the Ristant effects of se high thermonuclear explosion over J pbhnston Island on Aug. 1 and again on Aug. 12, 1958, ine Luding propegation of aurora 2,100 miles along the geom neEnetic meridian, similar propagation of magretic distur bance and a blackout of radio communications throughout th P Pacific

Select target paragraph3