What does USMX stand for?

What does USMX mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: USMX.

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U. S. Steel Mining Company, Incorporated

Regional » Railroads

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"USMX." Abbreviations.com. STANDS4 LLC, 2015. Web. 1 Feb. 2015. <http://www.abbreviations.com/USMX>.

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