A single copper yoke from the back of a TV can be worth an hour's wages in Asia . Some. Foreign Importers accept the whole unit, break o ff the copper, and throw the leaded glass. CRT in the river. Rudimentary, artisa n  gol d recyclers soak circuit boards in acid, and. pan for gold at the river's edge.
Landscape[edit] The Black Canyon (contained in the borders of the park) is a very deep gorge containing sheer cliffs up to heights of 2250 feet (685 m). The canyon was carved by the Gunnison River, located at the very bottom of the canyon.
At Artist Point Overlook the canyon is 1,200 feet (366 meters) deep. The deepest canyon in the eastern United States is 1,400 feet (427 meters). Canyons of the Nahanni, Northwest Territories, Canada. This canyon is in the Canadian northwest and is 3,300 feet (1,006 meters) deep.