[ RadSafe ] information on international requirements for disposal of oilfield scale

[JGinniver at aol.com]

Does anyone know of any good reference material for the handling disposal  of 
oilfield scale around the world?  There was quite a good study published  by 
the EU, but this only covered Europe.  Does any one know of any  publications 
that provide details for other parts of the globe?  I  understand that many 
areas have oilfield scale which is much more radioactive  than that associated 
with the North Sea.  Consequently the handling/storage  and disposal issues 
must be more significant.
 
Any pointers would be appreciated.
 
Regards Julian