into the anti-rollback device used on roller coasters. The railroad changed its name to the Mauch Chunk, Summit Hill and Switchback Railroad. The modernization of the railroad reduced a passenger round-trip from 4.5 hours to just 80 minutes.

1872-closure

In 1872, the Panther Creek Railroad opened as a replacement for the switchback line. The Lehigh Coal and Railroad is considered the first American company to use vertical integration,

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