[ RadSafe ] Best technique to detect contamination of DU in huge area

[Falah Abu-Jarad]

Dear ALL
Your advice is greatly appreciated:
There is potential to perform survey for possible DU contamination in huge area 10 km x 30 km as a result of gulf war. The area is desert-sandy and not uniform.
 
What is the best technique to perform that survey?
 
Is FIDLER with GPS and data timing is the best?
What is the range of the price for individual and array system with trailer?
Recommended manufacturer and it contact!
Best regards
 
Dr. Falah Abu-Jarad
abujarad2 at yahoo.com