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  2. Coal mining in Colorado - Wikipedia

    en.wikipedia.org/wiki/Coal_mining_in_Colorado

    Coal mining in Colorado is known to negatively impact both air and water quality. [ 11 ] [ 12 ] The West Elk Mine in Gunnison County is the largest methane emitter in Colorado, and in 2017 it emitted a quantity of methane equivalent to 98,000 cars.

  3. Timeline of mining in Colorado - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_mining_in_Colorado

    The only working underground mine in Colorado in 2008 was the Cash mine, built in 1872, at Gold Hill in Boulder County. Each ton of ore yields about .75 ounce of gold at the mine, which daily extracts about 50 tons of ore. [4] 2004 nahcolite: Piceance Basin: American Soda pilot project that mined via fracturing ended after 3.75 years. [5] 2004 coal

  4. Ludlow Massacre - Wikipedia

    en.wikipedia.org/wiki/Ludlow_Massacre

    At its peak in 1910, the coal mining industry of Colorado employed 15,864 people, 10% of jobs in the state. [ 2 ] : 96 Colorado's coal industry was dominated by a handful of operators. Colorado Fuel and Iron was the largest coal operator in the west and one of the nation's most powerful corporations, at one point employing 7,050 people and ...

  5. Mining in Colorado Springs, Colorado - Wikipedia

    en.wikipedia.org/wiki/Mining_in_Colorado_Springs...

    In the mid-19th century, Colorado Springs was a center of mining industry activity. Coal was mined in 50 mines in the area and towns, now annexed to Colorado Springs, were established to support residents of the coal mining industry. It was the home to gold and silver mine investors, like Winfield Scott Stratton [1] [2] and William Jackson Palmer.

  6. Category:Mining in Colorado - Wikipedia

    en.wikipedia.org/wiki/Category:Mining_in_Colorado

    Coal mining disasters in Colorado (3 P) Colorado Mining Boom (75 P) G. Gold mining in Colorado (1 C, 5 P) I. Colorado mining images (1 F) M. Mines in Colorado (1 C, 13 P)

  7. Coal mining in the United States - Wikipedia

    en.wikipedia.org/wiki/Coal_mining_in_the_United...

    In the decade 2005–2014, US coal mining fatalities averaged 28 per year. [45] The most fatalities during the 2005–2014 decade were 48 in 2010, the year of the Upper Big Branch Mine disaster in West Virginia, which killed 29 miners. [81] 2016 was the first year in U.S. coal mining history that had no fatalities due to coal mine roof falls. [82]