a coal-mining area
1coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… …
2Coal mining in Kentucky — 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… …
3Coal mining — Men leaving a UK colliery at the close of a shift Surface coal mining in Wyo …
4Coal-mining region — World coal producers and consumers. Coal reserves in BTUs as of 2009 …
5Coal mining in Colorado — Early coal mining in Colorado, a state of the United States was spread across the state. Some early coal mining areas are currently inactive, including the Denver Basin Raton Basin coal fields along the Front Range. There are currently 11 active… …
6Problems in coal mining — Coal mining cannot be done everywhere with coal, due to certain restrictions.ProblemsDip of strataDue to current machinery, a permament feedback is required.FaultingIf a fault hits a rock with a coal seam inside, the coal seam moves. Machinery… …
7History of coal mining — Due to its abundance, coal has been mined in various parts of the world throughout history and continues to be an important economic activity today. Compared to wood fuels, coal yields a higher amount of energy per mass and could be obtained in… …
8Datong Coal Mining Group — Company Limited 大同煤矿集团公司 Type State owned enterprise Industry Coal mining Founded 1949 Headquarters …
9Nuttallburg Coal Mining Complex and Town Historic District — U.S. National Register of Historic Places U.S. Historic district …
10Coal — Sedimentary Rock Anthracite coal Composition Primary carbon Secondary hydrogen, sulfur …
