Loaded coal cars at the Cambria Smokeless Mine, Cambria County, PA, circa 1920.
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Filled coal cars and railroad tracks sit in the front of the tipple of the Cambria Smokeless Mine.

Credit: Courtesy of the Johnstown Area Heritage Association,

The first large-scale mining in Cambria County began in 1856, when the Cambria Iron Company opened its Rolling Mill Mine. By 1901 there were 130 significant coal mines in the county. Soft coal production would peak in the 1910s and 1920s, when county mines produced more than 16 million tons of coal each year.

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