216, else the results are not those which would command confiderce and therefore of limited use. It is not something that you just send out an instrument to somebody on Quadjalein, md tell him to stick it in a plane and fly it over the atolls and 5 send back the record. 6 MR. HARLEY: I would like to add, although I Alderson Reporting Company Washington, D. C don't defend the comparative reliability of instruments, that s people tend to have a great deal of faith in something like a 9 T-1-B, and drag that out and make a myasurement and come i0 back and that is the fact. Whereas, ourselves, because we 11 recognize that they are not particularly stable, we don't 12 have quite so much faith. 13 business has to apply to everything that is used out there. I think that the same calibration 14 DR. BUGHER: That is very true. 15 MR. We made a check on energy dependence HARLEY: 16 out there. Actually we had it mde here at the Bureau of 17 Standards, afterwards, as you knm 18 difference between the scintillation unit and, say, the T-1-B. There is quite a 19 | We found actually that the T-1-B cuts off higher than people arc 20 seem to think, closer to 100 kilovolts, whereas the “1 scintillation is sensitive down close to 40, 22 DR. BUGHER: Yes. 23 MR. HARLEY: So we have to consider calibration #4 and energy where both sets of instruments are used. Ene oJ Rwy vet morte . co oa a. a F cena DR. BUGHER: That is correct. The standardd ae MES At)