Sutro Tunnel
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The Sutro Tunnel is a drainage tunnel connected to the Comstock Lode in Northern Nevada. It begins at Dayton, Nevada, and connects 3.88 miles Northwest to the Savage mine in Virginia City, Nevada. The
The entrance to the Sutro Tunnel in the late 1800s
Nevada Lawmakers visiting the Sutro Tunnel to see the work that the Friends of Sutro Tunnel have done to preserve and restore this significant part of Nevada's history.
Argo Tunnel
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The Argo Tunnel is a 4.16-mile mine drainage and access tunnel with its portal at Idaho Springs, Colorado, US. It was originally called the Newhouse Tunnel after its primary investor, Salt Lake City m
Sutro Tunnel
…City, Nevada. The Sutro Tunnel pioneered the excavation of large drainage and access tunnels in the US. Later US mine drainage tunnels included the Argo Tunnel at Idaho Springs, Colorado, the Leadville and Yak tunnels at Leadville, Colorado, and the Roosevelt tunnel in the Cripple Creek district, Colorado. The…
Argo Tunnel in 2009
Argo Tunnel, early 20th century
The Argo Tunnel water treatment plant removes metals and acidity before the tunnel discharge flows into Clear Creek, in foreground.
Algae in the Argo Tunnel's outflow, prior to the installation of a new inner bulkhead and reopening of the portal entrance for tours.