The Sunshine Mine is located between the cities of Kellogg and Wallace in northern Idaho. It has been one of the world's largest and most profitable silver mines, having produced over 360 million ounces of silver by 2001.A 2007 Canadian report by Behre Dolbear & Company estimated measured and indicated resources of 31.51 million ounces of silver in 1.43 million tons at 21.8 ounces of silver per ton and inferred resources of 231.5 million ounces of silver in 2.28 million tons at 101.6 ounces of silver per ton. The Behre Dolbear report is considered historic in nature and illustrates the resource potential of the Sunshine Mine.

From historical records beginning in 1904 the Sunshine Mine has produced 364,893,421 ounces of silver from 12,953,045 tons of ore through 2001 when the mine was closed. From January 1, 1998, to January 1, 2004, the average reserves carried by the mine were 1.38 million tons containing 32.20 million ounces of silver at 23.3 oz Ag/ton.