The Sutro Tunnel is a drainage tunnel connected to the Comstock Lode in Northern Nevada. It begins at Virginia City, Nevada and empties approximately 6 miles southeast near the town of Dayton, Nevada.
The tunnel was proposed by Adolph Sutro, a Prussian Jewish mining entrepreneur, in 1860. He promoted the drainage tunnel to allow access to deeper mineral exploration in the Comstock. Flooding and inadequate pumps had inhibited some exploration until that time.
By 1865, Sutro's idea had gained the approval of state and federal legislation. The mining interests of the Comstock initially supported the project, but later opposed the idea. They feared that an alternate access point to the Comstock minerals would threaten their monopoly on the mining and milling of gold and silver in the Comstock.
Nonetheless, Sutro formed the Sutro Tunnel Company, selling stock certificates to raise funds for its construction, which began in 1869. Financing also came from local miners motivated by the prospect of improved mine safety. This motivation was further advocated by Sutro after the Yellowjacket mine disaster where dozens of miners were burned to death because they could not escape.