Pre-Merger Period (1901-1938)

  • DM&N and D&IR under common USS ownership in 1901, but not merged.
  • DM&N's annual tonnage exceeds that of the D&IR.
  • Locomotive backstop in Proctor completed in 1905.
  • Alborn Branch laid in 1906 to access the west end of the Mesabi Range.
  • Duluth coal dock completed in 1909 for receiving shipments of coal for steam locomotives and to be into coke at the new Minnesota Steel plant.
  • Hull-Rust Short Line built in 1910.
  • Minnesota Steel starts making steel in 1915.
  • In 1915, the Spirit Lake Transfer Ry., serving Minnesota Steel, and the Interstate Transfer Ry. are constructed.
  • D&IR's 15-mile Wales Branch built in 1917.
  • DM&N and D&IR placed under federal control in 1918-1920 period.
  • DM&N steel dock #5 completed in 1915, followed by dock #6 in 1917.
  • DM&N leases D&IR in 1930.
  • In 1930, annual tonnage was around 20 million, but two years later, the tonnage falls below 1.5 million tons.
  • In 1937, DM&N and Spirit Lake Transfer Ry. are consolidated to form the Duluth, Missabe & Iron Range Railway. In 1938 the D&IR and Interstate Transfer Ry. were absorbed.