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Golden Spike National Historic Site
The Big Fill was constructed in two months in 1869 by the Central Pacific Railroad. The effort involved 250 horse-pulled dumpcart teams and 500 laborers.
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U.S. Department of the Interior - U.S. Geological Survey - Geology Discipline
The URL of this page is: http://3dparks.wr.usgs.gov/2005/goldenspike/html/gosp0051.htm
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Last modified: 11/28/2005