Deep underneath your feet is a hellish stone soup, kept hot by a torrent of radiation from poisonous isotopesofuranium, thorium and potassium in the earth's superheated mantle.
The most obvious attempt was when we gave them an offer that said we are going to provide the conversion of some of the low-enriched uranium that they already have into the isotopes that they need for their medical research and for hospitals that would serve up to a million Iranian citizens.