The BGR helicopter at the start of the geophysical survey, measuring the naturally occurring radioactivity with a NaI-scintillator (within the helicopter) and the gradient magnetometry with the SQUID-sensor (on the left)
The BGR helicopter at the start of the geophysical survey, measuring the naturally occurring radioactivity with a NaI-scintillator (within the helicopter) and the gradient magnetometry with the SQUID-sensor (on the left)
Source: BGR