The historic Argo Mill and Tunnel in Idaho Springs will soon be reimagined to include a gondola to the mountain top.

In the 1930s, workers bored a 13-mile tunnel beneath Mt. San Jacinto. Here's a look inside the engineering feat that carries ...

State officials finalized a landmark agreement with Union Pacific Railroad that modernizes a century-old lease for the Moffat Tunnel, setting the stage for expanded mountain passenger rail service ...

Union Pacific is generally on the hook for the tunnel, while the state would pay a proportionate share of operating and maintenance costs for the UP-owned tracks along the mountain passenger rail ...

The ore veins looked rich, but miles of costly road would have been needed to get the ore around the mountain to a shipping point. Lacking capital, William Schmidt decided to tunnel through the ...

TimesMachine is an exclusive benefit for home delivery and digital subscribers. About the Archive This is a digitized version of an article from The Times’s print archive, before the start of ...

The 13-mile-long San Jacinto Tunnel was bored through the mountain in the 1930s by a crew ... mad rush and filled the shaft to the top. Miners scrambled up the 800-foot ladder to the surface ...