Despite disturbing claims about the impact of uranium, ten-thousand proposals for exploration in the Grand Canyon area have been submitted. A key fuel for nuclear power, the US must now decide between full scale uranium mining, partial mining or a twenty year moratorium. Leana Hosia investigates Standing on the rim of the Grand Canyon it’s easy to see why it’s is called the crown jewels of the United States and a wonder of the world. Millions visit each year, generating some $600 million in tourism revenue. But a new wealth has been discovered here: America’s largest concentrations of high grade uranium – the fuel for nuclear power.