Alton Tunnel

Past ProducerGoldUndergroundUSGS MRDS

Location

StateColorado
CountyBoulder
Coordinates39.96805, -105.53920

Commodities

PrimaryGold
TertiarySilver

Mine Details

StatusPast Producer
TypeUnderground
First Production1909
Discovery Year1900
Data SourceUSGS MRDS
Source ID10214205