Actually the use of Ultrafine fraction (UFF) soil sampling is...

Actually the use of Ultrafine fraction (UFF) soil sampling is quite interesting to me.

In February last year, Barry Fitzgerald wrote that Encounter Resources is "the first to trial a new whizz-bang geochemical sampling technique developed by the CSIRO called Ultrafine+ which assists in identifying anomalies hidden beneath thin cover which could be worth drilling.

"Research shows that most of the metal in surface soil sampling is associated with the fine material which Ultrafine+ targets by separating the minus 2 micron fraction compared with standard field sieved samples of 50-250 microns.

"Removing the coarse material brings more samples into lab detection limits...

"... enabling it to define a coherent area from which higher readings were returned"

More background on this technique can be found here:
Land-of-golden-soil

Dreadnought is now trialling the Ultrafine+ technique with the CSIRO. From today's announcement:"The UFF sample preparation was defined following a Research and Development experiment conducted under the direction of CSIRO.""The program trialed the applicability of ultra-fine fraction (“UFF”) soil sampling over the area’s black plain soils and adds further confidence to the targets previously defined by magnetic and FLEM anomalies." "We are excited that the UFF soils sampling was effective in defining anomalies through the area’s black plain soils."