b'Commodity Total Prospects Occurrences Producer PlantsBismuth 8 4 3 1 0Thorium 7 6 1 0 0Silica 6 1 5 0 0Graphite 6 3 2 1 0Barium-Barite 5 3 2 0 0Cadmium 4 0 0 4 0Nickel 3 1 1 1 0Magnesite 2 0 2 0 0Sul\x1fdes 2 1 0 1 0Cobalt 2 1 1 0 0Manganese 2 2 0 0 0Arsenic 2 2 0 0 0Gemstone 2 1 1 0 0Tellurium 1 0 0 1 0Semiprecious Gemstone 1 0 1 0 0Sulfur 1 1 0 0 0Vanadium 1 1 0 0 0FIGURE 8. Mining Commodities in Custer County 9CUSTER County 353'