How is coal mined? Read Full Story: http://www.spoonfeeding.in/2013/02/how-is-coal-mined-what-is-surface.html Mining is the process of removing coal from the ground. There are two types of mining: underground mining and surface mining. When the coal seam is fewer than 125 feet under the surface, it is mined by surface mining. Coal that is deeper than 125 feet is removed from the ground by underground mining. Underground mining is used when the coal seam lies deep in the earth. In an underground mine only some of the coal is removed. The coal that remains helps support the mine roof. Underground mines look like a system of tunnels. The tunnels are used for traveling throughout the mine, moving coal from place to place and allowing air to circulate in the mine. The coal that is mined is put on conveyor belts. The conveyor belts take the coal to the surface. There are three types of underground mines: slope, drift, and shaft. When the coal seam is close to the surface but too deep to use surface mining, a slope mine can be built. In a slope mine a tunnel slants down from the surface to the coal seam. A drift mine is built when the coal seam lies in the side of a hill or mountain. Drift mines may also be built in a surface mine that has become too deep. There are many drift mines in the eastern United States. The most common type of mine in Illinois is the shaft mine. These mines may be 125 to 1,000 feet deep. A large hole, or shaft, is drilled down into the ground until it reaches the coal seam.
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JOHANNESBURG (miningweeky.com) -- A new mining method, which avoids the wasteful shattering of precious metal during blasting, has the potential to boost gold and platinum mining significantly, says highly experienced research coordinator Dr RE (Robbie) Robinson. Selected blast mining (SBM), assisted by modern computer programming, could be re-piloted in a matter of months to become standard practice across South Africa's narrow-reef precious metals mines within a year, the former director of the National Institute for Metallurgy, now Mintek, says in a Mining Weekly Online video interview. (To watch this video interview, click on the icon on the picture accompanying this article).
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This classic film, produced in the 1980's, uses archival footage to paint a picture of gold mining practices outside of Fairbanks in 1949. While today we would consider these practices obsolete, the methods of mining depicted in the film represent large-scale, mechanized versions of the same techniques employed by prospectors coming to Alaska and the Yukon in the 1890's.
Views: 4734 AlaskaNPS
For more on this and other stories please visit http://www.enca.com/ August 28 - As the mining industry meets this week to resolve issues afflicting the sector, there have been calls for mine bosses to break away from old colonial attitudes, in order for change to happen.
Views: 171 eNCA
Coal Curse (Hindi), a film by Paranjoy Guha Thakurta, supported by Greenpeace, takes you on a journey to the land of dirty coal and the trials and tribulations of the people working in the coal mines. The documentary explores the political economy of coal in contemporary India with the situation in Singrauli as a case study. It highlights the scandal, popularly called Coalgate, and the consequences of coal mining in the Singrauli region in central India. It raises questions as to whether extraction of coal is the best answer to secure India's energy needs.
Views: 7901 Greenpeace India
In which John Green teaches you about the Industrial Economy that arose in the United States after the Civil War. You know how when you're studying history, and you're reading along and everything seems safely in the past, and then BOOM you think, "Man, this suddenly seems very modern." For me, that moment in US History is the post-Reconstruction expansion of industrialism in America. After the Civil War, many of the changes in technology and ideas gave rise to this new industrialism. You'll learn about the rise of Captains of Industry (or Robber Barons) like Cornelius Vanderbilt, Andrew Carnegie, John D Rockefeller, and JP Morgan. You'll learn about trusts, combinations, and how the government responded to these new business practices. All this, plus John will cover how workers reacted to the changes in society and the early days of the labor movement. You'll learn about the Knights of Labor and Terence Powderly, and Samuel Gompers and the AFL. As a special bonus, someone gets beaten with a cane. AGAIN. What is it with American History and people getting beaten with canes? Support CrashCourse on Patreon: https://www.patreon.com/crashcourse
Views: 1940919 CrashCourse