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Tunnel No. 4 (#38 Visible)

Curated by ACT

This site offers an abstract from Van Nostrand's Eclectic Engineering Magazine from 1870 from a paper by John R. Gilliss. A comprehensive look at the tunnels built along the route of the Central Pacific Railroad and the Union Pacific Railroad.

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Classroom Considerations
  • This resource is only available on an unencrypted HTTP website.It should be fine for general use, but don’t use it to share any personally identifiable information