Gold still produced in South Dakota, and the Homestake Mine was in operation until 2002.
Back then the Homestake Mine was the largest and deepest gold mine in North America, producing more than $1 billion in gold.
South Dakota continues to be one of the leading gold producers in the United States.
The mine is near Deadwood, which attracted such characters as Wild Bill Hickok and Calamity Jane in the gold rush days.
