worlds biggest coal mine :black thunder The Black Thunder Coal Mine is a surface coal mine in the U.S. state of Wyoming , located in the Powder River Basin which contains one of the largest deposits of coal in the world. Black Thunder is the second most productive mine in the United States , providing the U.S. with eight percent of its coal supply. [1] In 2007, the mine produced 86,196,275 short tons (78.2 million metric tonnes ) of coal,[2] nearly 20 percent of Wyomings total coal production, and higher than 23 other individual coal producing states. [2] Black Thunder’s dragline excavator is the biggest in the world and produces enough coal to load up to 20-25 trains per day. [3] Draglines are not used to dig coal but only strip overburden. Black Thunder operates six draglines, not just one. Coal is excavated by power shovels and loaded into haul trucks.[4] In 2009, the America’s Power Factuality Tour stopped at the Black Thunder Coal Mine to report on its role in generating electricity in the United States. [1] In 2010, the Black Thunder Mine dug up an estimated 115 million tons of coal, an increase of 34 million tons over 2009. The increase was a result of merging the Jacobs Ranch Mine - and its average 38 million tons per year - into the Black Thunders annual production. With the acquisition of Jacobs Ranch Mine, Black Thunder is now the worlds top coal producer. [5] In 2011, the America Revealed “Electric Nation” episode aired on PBS and features Thunder Basin’s Black Thunder coal mine. [3] History The mine was opened in 1977, and run by ARCO Coal until it was acquired in 1998 by Arch Coal .[6] For most of its existence, Black Thunder has been the largest mine in the country (by production), but it was surpassed by the nearby North Antelope Rochelle Mine . North Antelope Rochelle was created after Peabody Energy purchased the Rochelle mine next door to their North Antelope Mine and consolidated operations. Arch Coal, Inc. announced on March 9, 2009 that it has agreed to purchase Rio Tintos Jacobs Ranch mine adjoining Black Thunder, which resulted in Black Thunder once again becoming the largest mine in the world.[7] References 1. ^ a b Americas Power Factuality Tour 2009 . Retrieved 2009-08-27. 2. ^ a b Energy Information Administration - Annual Report . Retrieved 2008-01-25. 3. ^ a b PBS-America Revealed: Electric Nation 4. ^ Video: Virtual Tour of Black Thunder Coal Mine . Retrieved 15 February 2013. 5. ^ Black Thunder Mine . Center for Media and Democracy / Sourcewatch. Retrieved 2013-06-20. 6. ^ Mining Technology - Black Thunder Coal Mine, USA . Retrieved 2008-01-25. 7. ^ About Us: Arch Coal, Inc. acquires Rio Tintos Jacobs Ranch Operation .
Posted on: Thu, 03 Jul 2014 06:47:37 +0000
Trending Topics
Recently Viewed Topics
© 2015