The Magma Arizona Railroad (reporting mark MAA) was built by the Magma Copper Company and operated from 1915 to 1997. The railroad was originally built as a 3 ft (914 mm) narrow gauge line, but was converted to 4 ft 8+1⁄2 in (1,435 mm) standard gauge in 1923.
The Magma Arizona Railroad (reporting mark MAA) was built by the Magma Copper Company and operated from 1915 to 1997. The railroad was originally built as a 3 ft (914 mm) narrow gauge line, but was converted to 4 ft 8+1⁄2 in (1,435 mm) standard gauge in 1923.
Source: Wikipedia "Magma Arizona Railroad" · CC BY-SA 4.0
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