Report of Robert Faries, Civil Engineer, on the Surveys to Avoid the Inclined Planes on the Allegheny Portage Railroad (Classic Reprint)

Excerpt from Report of Robert Faries, Civil Engineer, on the Surveys to Avoid the Inclined Planes on the Allegheny Portage Railroad

The tunnel at Sugar I' un Gap, two thousand three hundred feet m length, wrth'r a double track through rt, rs estrmated to cost one bandr d and srsty fire thousand dollars.

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