Idaho-Maryland Mine historic site (Grass Valley, California) | place with historical importance

 place with historical importance, mine

The famous California gold rush began in 1849 after James Marshall discovered gold on the American River at Coloma on January 24, 1848. As word spread of the spectacular gold discovery, people from all over the world traveled to California in pursuit of the promise of great wealth and the lure of gold. As miners spread out from the Coloma area looking for gold, numerous other discoveries of greater value were made.

The Idaho-Maryland Mine is located in the Grass Valley Mining district, which has been the most productive gold area in the State of California and the fifth largest gold producing area in the United States. The Idaho-Maryland Mine, discovered in 1851, produced gold from 1862 through 1956 and is the second largest historical underground gold producer in California. Total recorded production was 2,383,000 ounces of gold from 5,546,000 short tons for a recovered grade of 0.43 ounces of gold per short ton.

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