. >> she's a member of the halve supai tripe. and they have done damage from the orphan mine. but it's the new damage that poses the greatest threat. >> it contaminates the water, and we don't want to see that. the water is very very sacred. and we have to preserve t. >> according to the grand canyon trust, 40 mines operate on the north and south rims of the canyon. one of them, the canyon mine, known as the zombie mine because it lay dormant for decades. it operates in the basin, which provides the hava supai people with their primary source of drinking water, and it's the main tourist section of the park. >> it's a time bomb in the layup. >> we met roger clark with the grand canyon trust as he was leading a group of college students. >> when the waterfalls on it, the water coming off of it is radioactive. >> a 20-year ban on mining but mines are able to resume operation. additionally, arizona officials and the arizona chamber of commerce are working to overturn the ban, saying that uranium and copper mining will create jobs. >> in terms of arizona's economic health and from