seismograph records the earth tremors from both underground explosions and earthquakes seismogram shows the magnitude and epicenter of the earth tremors the public health service radiological and the atomic energy commission conduct an extensive public information brought graham to educate civic groups and other interested organizations as to the major purpose and procedures of the radiation safety program this public information program informs the people in the vicinity of the test area of the objectives of the test project and its potential probable and actual hazards they are also informed about the many save guards and precautions designed to protect them from radiation exposure and advised how era filters on appropriate counters will indicate any concentration of radiation in the area the people are in bor and about the film bad program and shown other devices for measuring radiation in their vicinity they are told about geiger counters and other radiation detection instruments all communications media are utilized to newspapers radio and t v stations and other communications sources the public is continuously informed to the extent of its interest as to the public information programs include informal discussions with public officials school authorities another group throughly is on the program communications with state and local health officials the radio logical safety program is augment and by their interest and produce a patient in the program in their respective communities continuous recorders air sampling units where experimental tests are undertaken continuous radiation recorders are operated in selected communities near the area these recorders will measure the natural background radiation and are capable of automatically recording the time of arrival intensity and length of stay of any additional radiation in other locations monitoring teams collect exposed air builders periodic lee and send them to the offsite laboratory where appropriate powders will indicate concentration of radioactive particles on the builder aircraft equipped with monitoring devices or radiological save these surveys are available and will be used as necessary to monitor up to a distance where the radiation is no longer deductible exposed badges are collected and replaced on a specific schedule and records are kept of all radiation exposure other monitoring operations include the sampling of foods indigenous to the area the sampling of soil in the vicinity milk produced in the area  potable and other water supplies at the public health service radiological held off site laboratory the environmental samples are prepared and counted for gross activity emphasis is given to water samples from underground sources radio analysis is undertaken on an intensive basis for one year with follow up or five years when indicated samples are examined to determine specific isotopes either by radio gamma goes operation or by gamma spectromet several types of counting instruments are used for measuring radio this gas flow counter automatically determines the radioactivity of each sample repair builders are checked for radiation after the laboratory analyses come to the task of correlating and analyzing all data relating to each test this comprehensive some of whom includes negative data associated with the operation and recommendations for future experiments a public health service position that was part of the medical liaison officer network is assigned to the radiological safety organization is primary function is to consult with local positions and medical societies to answer any of their questions on the biomedical objects of radiation nevada test site on a continuing basis a veterinarian officer is assigned to the radiological safeties that is available for consultation with private practicing veterinarians and farmers at other locations is primary function is to advise local veterinarians and ranchers about the effects of radiation on livestock and expensive animals study has been in progress for several years to provide data on the uptake of radioactive isotopes told pathological examinations are made on selected specimens results to date show no significant growth subject or disease conditions which suggest it will help or lowered resistance the public health service in cooperation with the atomic radiation exposure to an absolute minimum with guards and precautions taken in these program operations likely that the public will be exposed to radiation levels greater than the production guide recommended by the federal radiation coun