Coal mining in Kentucky

Coal mining in Kentucky

Jesse Russell Ronald Cohn

     

бумажная книга



ISBN: 978-5-5084-9102-4

High Quality Content by WIKIPEDIA articles! Coal was discovered in Kentucky in 1750. Since the first commercial coal mine opened in 1820 coal has gained both economic importance and controversy regarding its environmental consequences. As of 2010 there are 442 operating coal mines in the state.