近百年来，美国煤炭工业经历了从向工业和运输业提供动力到生产美国使用的大部分电力的历程。如今，煤炭仍提供美国近６０％的能源，煤炭继续是可供选择的便宜的燃料。１２０世纪初１９世纪末，美国处于铁路建设的喜悦中。１９１０年，内政部设立了矿业局，其作用局限于研... For nearly a century, the coal industry in the United States has gone through a process that has shifted from providing power to industries and transport to producing most of the power used by the United States. Today, coal still supplies nearly 60% of the energy in the United States and coal continues to be the cheaper fuel of choice. At the beginning of the nineteenth century, the United States was in the joy of railway construction. In 1910, the Ministry of the Interior set up the Mining Bureau, its role is limited to research ...