Railroad tie - Wikipedia

File:Railroad ties on perforating and boring machines at St Helens Creosoting Company, Portland, Oregon, circa 1920s (INDOCC 1616).jpg - Wikimedia Commons

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Railroad tie - Wikipedia

Fitxategi:Man working on a railroad tie sitting on a charge, at a railroad tie treating plant in Somervell, Texas, circa 1909 (INDOCC 1629).jpg - Wikipedia, entziklopedia askea.

Railroad tie - Wikipedia

File:Destroying CW railroads.jpg - Wikimedia Commons

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Railroad tie - Wikipedia

File:Report on the use of metal railroad ties and on preservative processes and metal tie-plates for wooden ties (1894) (14574044008).jpg - Wikimedia Commons

Railroad tie - Wikipedia