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St. Louis, Iron Mountain and Southern Railway

Historic American railway company (1856–1917), known as the Iron Mountain, later merged into the Missouri Pacific Railroad.

Last updated September 26, 2026

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Overview

The St. Louis, Iron Mountain and Southern Railway (reporting mark SLOT), commonly known as the Iron Mountain, was an American railway company that operated from 1856 until 1917. It was initially established to deliver iron ore from Iron Mountain to St. Louis, Missouri. The company was once owned by Henry Gudon Marquand and his brother Frederick Marquand, who were forced out through Jay Gould's railroad monopoly. In 1883 the railway was acquired by Jay Gould, becoming part of a 9,547-mile (15,364 km) system. On May 12, 1917, the company was officially merged into the Missouri Pacific Railroad, which in turn was merged into the Union Pacific Railroad between 1982 and 1997. The Iron Mountain was robbed twice: once by the James-Younger Gang on January 31, 1874, at Gad's Hill, and once by the "One-Time Train Robbery Gang" on November 3, 1893, at Olyphant, Arkansas. A heritage railroad by the same name, based in Jackson, Missouri, operates about 6 miles (9.7 km) of shortline in Cape Girardeau County. The modern Iron Mountain Railway in Jackson, Missouri, is an entertainment short line excursion railway run entirely by volunteers, hosting over 11,000 visitors a year, with passenger cars made in 1926.

History

The St. Louis, Iron Mountain and Southern Railway (reporting mark SLOT), commonly known as the Iron Mountain, was an American railway company that operated from 1856 until 1917. It was initially established to deliver iron ore from Iron Mountain to St. Louis, Missouri. The company was once owned by Henry Gudon Marquand and his brother Frederick Marquand, who were forced out through Jay Gould's railroad monopoly. In 1883 the railway was acquired by Jay Gould, becoming part of a 9,547-mile (15,364 km) system. On May 12, 1917, the company was officially merged into the Missouri Pacific Railroad, which in turn was merged into the Union Pacific Railroad between 1982 and 1997. The Iron Mountain was robbed twice: once by the James-Younger Gang on January 31, 1874, at Gad's Hill, and once by the "One-Time Train Robbery Gang" on November 3, 1893, at Olyphant, Arkansas. A heritage railroad by the same name, based in Jackson, Missouri, operates about 6 miles (9.7 km) of shortline in Cape Girardeau County. The modern Iron Mountain Railway in Jackson, Missouri, is an entertainment short line excursion railway run entirely by volunteers, hosting over 11,000 visitors a year, with passenger cars made in 1926.

  • 1982

    Missouri Pacific Railroad began merger into Union Pacific Railroad (completed 1997).

  • 1917

    Officially merged into the Missouri Pacific Railroad on May 12.

  • 1893

    Robbed by the "One-Time Train Robbery Gang" at Olyphant, Arkansas on November 3.

  • 1883

    Acquired by Jay Gould, becoming part of a 9,547-mile system.

  • 1874

    Robbed by the James-Younger Gang at Gad's Hill on January 31.

  • 1856

    Company founded and began operations.

Products and positioning

Historic American railway and heritage excursion line

  • Freight rail transportation

  • Passenger rail transportation

  • Iron ore transport

  • Heritage excursion train rides

Sources3 sources

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