1) With many #Uranium Explorers now actively drilling in #Canada's #AthabascaBasin, perhaps it's time
for a thread on how to interpret drill data coming soon
in news releases.
Misunderstanding data can lead to premature exit... selling
when you shoulda been buying





2) #Uranium explorers drill rock core samples looking for signs of #U3O8 bearing ore.
Rarely do they ever hit high-grade on first few attempts.
Geologists first look for visual signs in the core samples.. here's description from pre-discovery 2013 drilling at Arrow (Rook 1):


3) Visual inspection of core samples is just 1 of many steps taken to see if they found #uranium. Presence of radioactivity is best indicator so all cores are scanned with an instrument called a Hand-held Scintillometer to produce "Scint" CPS tables for cores from each hole.

4) After an exploration hole has been drilled & all core samples recovered, an instrument called a Downhole Gamma Probe is lowered to the bottom & recovered, constantly measuring #uranium radioactivity in a 360 degree sweep to produce a complete Gamma Log Profile for each hole.

5) Here's downhole Gamma Log Profile for Fission #Uranium $FCU's world-record drill hole PLS17-METC that contained a continuous 30-storey tall set of high-grade U core sections, 108m at Average Grade of 8.46% #U3O8. Best mineralized hole drilled worldwide for any mined metal.

6) Boxes of #uranium cores are then shipped off to a lab where they are assayed to determine exact % Grade #U3O8 (& other minerals like #Gold) in 1/2 metre intervals. This leads to a month or 2 of waiting by investors to see actual grades. Tables are then published for each hole.
7) Other data often provided includes Maps & overlays of surface and airborne survey data, or perhaps most valuable are Cross Section Views that show angles of drill holes along a survey line & geologic interpretation around the #uranium bearing ore, used to build 3D models.
