|Had not heard of this before today:|
World’s first Earth X-ray discovery platform
'Almost like Star Trek': New startup helps miners stare deep into the earth with cosmic rays 'World’s first Earth X-ray discovery platform' could be used to find untapped metal, mineral deposits far below surface
Called “the world’s first Earth X-ray discovery platform,” Canada’s Digital Technology Supercluster announced in November it had invested $5.6 million in a group of companies, led by Vancouver’s Ideon Technologies, trying to pioneer muon tomography.
At a basic level that means studying the path of subatomic particles emitted by cosmic rays, which are known as muons, in order to glean insight about the geology of the earth.