<Tr> <Th> Designated CHISL </Th> <Td> </Td> </Tr> <Tr> <Th> Designated SFDL </Th> <Td> 2003 </Td> </Tr> <P> The San Francisco Mint is a branch of the United States Mint and was opened in 1854 to serve the gold mines of the California Gold Rush . It quickly outgrew its first building and moved into a new one in 1874 . This building, the Old United States Mint, also known affectionately as The Granite Lady, is one of the few that survived the great 1906 San Francisco earthquake . It served until 1937, when the present facility was opened . </P> <P> Within the first year of its operation, the San Francisco mint turned $4 million in gold bullion into coins . The second building, completed in 1874, was designed by Alfred B. Mullett in a conservative Greek Revival style with a sober Doric order . The building had a central pedimented portico flanked by projecting wings in an E-shape; it was built around a completely enclosed central courtyard that contained a well--the features that saved it during the fire of 1906, when the heat melted the plate glass windows and exploded sandstone and granite blocks with which it was faced . The building sat on a concrete and granite foundation, designed to thwart tunneling into its vaults, which at the time of the 1906 fire held $300 million, fully a third of the United States' gold reserves . Heroic efforts by Superintendent of the Mint, Frank A. Leach, and his men preserved the building and the bullion that then backed the nation's currency . The mint resumed operation soon thereafter, continuing until 1937 . </P>

When did the san francisco mint stop making circulating coins