Silver, gold, lead and copper ores occur in many localities.
Then copper mining rapidly developed and considerable gold was obtained from copper ores.
Until the development of copper mining, silver was produced only in small quantities along with gold, but as much more silver than gold was obtained from the copper ores the value of the silver product increased from $2,630,000 in 1881 to $24,615,822 in 1892.
The product then fell off, but in 1907, when it amounted to 9,317,605 fine ounces, valued at $6,149,619, more than nine-tenths of it was derived from the copper ores in Silverbow county.
Excellent beds of coal are found in different places, especially about Kulja, but the fairly rich copper ores and silver ores have ceased to be worked.