Such equipment was placed in operation to monitor fallout radiation during the 1953 test series, and refined equipment of the same type was used again in 1955. The system involves the transmission of radiation information by means of long distance telephone lines for off-site detector locations, by means of direct field wire for stations within about 15 miles of control stations and which are not accessible by commercial telephone lines; and by means of radio link where neither telephones nor field ling transmission is feasible. The equipment permits a single operator to obtain radiation data from the 30 stations which are located from 50 to 350 miles from the Nevada Test Site. The operator at the site simply places a telephone call to the station in the usual manner when information is sought. The station answers automatically, sends in its data, then hangs up. Field stations andradio stations are reached similarly by the operator from the control console. Stations were placed on the basis of fallout patterns from previous tests and on the basis of population density. They are located generally so as to supplement the manned teams of off-site radiation monitors. After each shot, infor- mation from radiation recorded in each station is obtained even from areas where no fallout has been predicted. The fallout data is méde available to the off-site radiation safety unit for use in evaluatingthe significance of fallout and as a cross check with other data collection units and programs. Location of the stations and the distances in miles from the Nevada Test Site follow: Alamo 50, Austin 180, Carson City 245, Elko 260, Ely 170, Eureka 170, Hawthorne 175, Henderson 80, Logandale 80, Pioche 110, Reno 260, Tonopah 100, Wells 280, Winnemucca 280, (Nevada); Barstow 156, Lone Pine 115, Needles 150, (California); Beaver 195, Cedar City 165, Delta 245, Eureka 280, Kanab 205, Manti 275, Mount Pleasant 290, Parowan 175, Provo 315, Richfield 240, St. George 135, Salt Lake City 330, (Utah); Kingman (Arizona), 160 Other Data Collecting Projects Several hundred fallout trays, coated with waterproof adhesive, have been distributed in areas generally adjacent to the Test Site. The contents are collected regularly and analyzed for beta particle fallout. at The Atomic Energy Project of the University of California, Los Angeles, is utilizing the test series to continue studies of the uptake of fission products in plant and animal life and the distribution of fallout particles. The Project has conducted such studies in connection with all continental tests since the first one in 1945. - 56 -