Which of the two mines, Discovery Mine or Big Dan Mine, produced more gold?
Big Dan Mine Big Dan Mine is an abandoned underground mine in Northeastern Ontario, Canada. It is located about 1 km southwest of Net Lake and just west of the Ontario Northland Railway in east-central Strathy Township. It is named after Dan O'Connor, who first claimed the site in the 1890s.
Empire Mine State Historic Park Empire Mine State Historic Park is a state-protected mine and park in the Sierra Nevada Mountains in Grass Valley, California, USA. The Empire Mine is on the National Register of Historic Places, a federal Historic District, and a California Historical Landmark. Since 1975 California State Parks has administered and maintained the mine as a historic site. The Empire Mine is "one of the oldest, largest, deepest, longest and richest gold mines in California." Between 1850 and its closure in 1956, the Empire Mine produced 5.8 million ounces of gold, extracted from 367 mi of underground passages.