Nederland survived three boom-and-bust cycles involving three different minerals. During the silver boom, U.S. president Ulysses S. Grant visited Central City in 1873 and walked on silver bricks that had been mined in Caribou and milled in Nederland. The second boom followed the discovery of gold in Eldora in 1897 and lasted only a few years. The third boom was sparked by the discovery of tungsten by Sam Conger, the same man who made the original