The miners prospected far and wide for new placer gold discoveries. Miners prospected gold on the Goodyears Creek. Iron was its main commodity, but alluvial gold was also prospected. Large baryte deposits prospected in the 1950s have remained untouched. The deposits were prospected as early as 1868. In South Africa, the Wittstocks worked as handyworkers and unsuccessfully prospected for diamonds. Mount Takahe has been prospected for the possibility of obtaining geothermal energy. From this base they prospected along the Maramuni River and its tributaries, again without success. A thousand acres of Shasta river had been prospected to varying amounts by April 1851. The ship was laden with of gold prospected during the California Gold Rush. The mine was prospected in 1996 and a gold extraction permit issued in 1999. He also prospected for gold in the mountains. Barnum Brown prospected the formation in 1933, but found nothing significant. The Voznesenovskoye deposit was prospected in 1948. At age 18, Simpson prospected for gold in Alaska.