I've heard He is hard to detect, but leak detectors are portable and quite common and sound simple enough: http://en.wikipedia.org/wiki/Helium_mass_spectrometer Maybe they're really really expen$ive or have other problems.
Hoyt Stearns Scottsdale, Arizona US -----Original Message----- From: Jed Rothwell [mailto:[email protected]] Sent: Tuesday, May 03, 2011 9:26 AM Jones Beene wrote: > There is no helium here, no tritium and no radioactivity, and NO non-natural > isotopic distribution, so how could it be nuclear? How do you know there is no helium, tritium or radioactivity here? They have hardly begun to look. Helium in particular is very difficult to detect... - Jed
