Re: Water Tank Activity

[Lew Dallas <lewisdallas@worldnet.att.net>]

Western Radiation Services wrote:
> 
> David,
> 
> Probable source of activity would be scale containing either 226 Radium, 228
> Radium, 40 K or a combination of all three, if the tank was used for ground
> water storage.
> 
> A simple check would be to use a geological survey meter with 3 channels for
> U, Th and K to determine which nuclide is present.
> 
> If it is the Radium nuclides, I suggest that the curent user of the water be
> advised to get the supply checked.
> 
> All the best
> 
> Bill Chandler

What is a geological survey meter?  As I understand there were field 
meters produced in the early days for uranium exploration.  Any 
information or sources of information on geological survey meters would 
be appreciated.  Thanks.    Lew Dallas