Homestake Mine

The Homestake Mine was a deep underground gold mine located in Lead, South Dakota. Until it closed in 2002 it was the largest and deepest gold mine in North America. The mine produced more than forty million troy ounces of gold during its lifetime. This is about 70.75 m3 or a volume of gold roughly equal to 18 677 gallons .

The Homestake Mine is famous in scientific circles because of the work of a deep underground laboratory that was set up there in the mid-1960s. This was the site where the solar neutrino problem was first discovered, in what is known as the Homestake Experiment. Raymond Davis Jr. conducted this experiment in the mid-1960s, which was the first to observe solar neutrinos.

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