Spring Valley Mine

Spring Valley Mine is a surface gold mine in Lyon County, Nevada, near Moundhouse. MSHA lists its status as active since Dec 16, 2015 and records 3 employees. It is one of 57 gold mines in Nevada that are not marked abandoned, and the only one in Lyon County; by employees it ranks 51 of 54 in the state.

Facts

MSHA status
Active since Dec 16, 2015
Type
Surface
County
Lyon County
State
Nevada
Land status (BLM data)
Private land or land not mapped as public
Nearest town
Moundhouse
Employees reported
3
Operator
Geo Nevada Inc
Coordinates
39.2400, -119.6378
MSHA mine ID
2602470

Source: MSHA Mines data set, retrieved 2026-10-13. Status and counts can lag real operations.

Land status comes from the BLM Surface Management Agency dataset and can be out of date. Check ownership before you go near any mine site.

History and geology (USGS)

USGS site name
Poker Flat Mine
USGS status
Past producer
Commodities
Gold, Silver

Matched by location to the USGS Mineral Resources Data System record 10295175 (retrieved 2026-10-13). The database was last updated around 2011, so history may be out of date.

Gold mines nearby