Historic gold producers in Baltimore City County (USGS)
USGS records 1 historic gold producer in Baltimore City County: 0 past producers and 1 listed as a producer or plant.
Show the 1 sites
| Site | USGS status | Output | Commodities | Years |
|---|---|---|---|---|
| American Smelt & Refin/Baltimore Md | Plant | n/a | Gold, Copper, Palladium, Platinum, Selenium, Silver, Tellurium | n/a |
Source: USGS Mineral Resources Data System (retrieved 2026-10-13). The database was last updated around 2011, positions can be approximate and "producer" does not mean a mine is operating today. Sites already matched to an MSHA record are shown in the MSHA tables.