Argonaut Mine – Explore Real California Gold Mines!
Oct 31, 2014· It operated to a depth of 5,570′ until 1942 when War Production Board Order L208 closed all gold mines in the US. neighborhoods built over top. In October of 2014 we made our way through the neighborhoods built over top the old milling operation that surround the old mine and drove right up to the locked gate of the Argonaut.