From memory, this is how Gina Rhineheart's (Australia's mining magnate) father discovered the location for the Pilbara (the world's largest iron deposit) -- by

From memory, this is how Gina Rhineheart's (Australia's mining magnate) father discovered the location for the Pilbara (the world's largest iron deposit) -- by flying overhead and noticing how red the soil was[1]. [1]: https://en.wikipedia.org/wiki/Lang_Hancock https://en.wikipedia.org/wiki/Lang_Hancock