Dream Carriers Model Trains

The Only Place Model Train Fanatics Shop Online…

Coal Load

with one comment


Coal Load
Coal Load

Coal Mining Industry

The coal mining industry segment produces coal, a fossil fuel that is used primarily for electric power generation and in the production of steel. Like oil, coal is formed over millions of years from plant and animal matter, but unlike oil, coal is a solid, and therefore miners must go into the earth to recover it. Many coal seams are located close to the surface, however, which makes the extraction of this resource easier.

Surface mining of coal typically uses the method known as strip mining, which is usually more cost-effective than underground mining and requires fewer workers to produce the same quantity of coal. In strip mining, workers use huge earthmoving equipment, such as power shovels or draglines, to scoop off the layers of soil and rock covering the coal seam. Once the coal is exposed, it is broken up by using explosives, and then smaller shovels lift it from the ground and load it into trucks. Mining companies are required by Federal, State, and local laws to restore the mined land after surface mining is completed; as a result, the overburden and topsoil are stored after removal so that they can be replaced and native vegetation replanted.

Underground mining is used when the coal deposit lies deep below the surface of the earth. When developing an underground mine, miners first must dig tunnels deep into the earth near the place where the coal is located. Depending on where the coal seam is in relation to the surface, tunnels may be vertical, horizontal, or sloping. Entries are constructed so that miners can get themselves and their equipment to the ore and carry it out, while allowing fresh air to enter the mine. Once dug to the proper depth, a mine’s tunnels interconnect with a network of passageways going in many directions. Using the room-and-pillar method, miners remove sections of the coal as they work the coal seam from the tunnel entrance to the edge of the mine property, leaving columns of coal in place to help support the ceiling together with long steel bolts. This process is then reversed, and the remainder of the ore is extracted, as the miners work their way back out. In the case of longwall mining of coal, self-advancing roof supports, made of hydraulic jacks and metal plates, cover the area being mined. As coal is removed, the entire apparatus advances, allowing the ceiling in the mined area to cave in as the miners work back towards the tunnel entrance. Underground mining does not require as extensive a reclamation process as surface mining; however, mine operators and environmental engineers still must ensure that ground water remains uncontaminated and that abandoned mines do not collapse.

About the Author

Bryan Peter is a Copywriter of Coal Mining We provide latest updates in the mining industry, the rich information in this site gives valuable inputs with regards to types of metals, minerals & precious stones and their properties. For more information visit: Underground Mining contact him at brayan.peter@gmail.com

Aster Allegheny on the SVRR with coal load

You Can Find Coal Load On eBay Below:

Z scale cast metal 40s DUMP TRUCK WITH A LOAD OF COAL
Z scale cast metal 40s DUMP TRUCK WITH A LOAD OF COAL
US $8.99
Z SCALE HORCH COAL TRUCK WITH LOAD OF COAL CAST METAL HANDPAINTED
Z SCALE HORCH COAL TRUCK WITH LOAD OF COAL CAST METAL HANDPAINTED
US $10.99

Scroll Down To Find More Coal Load On Amazon:

Century Heating The Century Heating The "WHISTLER" Wood-Burning Stove - 110,000 BTU, Model# DB05152

List Price: $499.99
Sale Price: $449.99
You save: $50.00 (10%)

 
Vogelzang 200,000 BTU Cast Iron Pot Belly Stove, Model# PB65XL Vogelzang 200,000 BTU Cast Iron Pot Belly Stove, Model# PB65XL

Sale Price: $399.99

 
Wallmonkeys Peel and Stick Wall Decals - Coal Pier - Removable Graphic Wallmonkeys Peel and Stick Wall Decals - Coal Pier - Removable Graphic

 
Butt Load Of Coal Set of 12 Humor Christmas Cards Butt Load Of Coal Set of 12 Humor Christmas Cards

 
Funny Merry Christmas Card Butt Load Of Coal Humor Greeting Daniel Collins Funny Merry Christmas Card Butt Load Of Coal Humor Greeting Daniel Collins

 
Share and Enjoy:
  • Print
  • Digg
  • Sphinn
  • del.icio.us
  • Facebook
  • Mixx
  • Google Bookmarks
  • Blogplay

Written by admin

May 28th, 2010 at 6:55 pm

One Response to 'Coal Load'

Subscribe to comments with RSS or TrackBack to 'Coal Load'.

  1. Some very attention-grabbing points however i feel your analysis and bias leaves loads to be desired. Then after all, that’s simply my opinion. Have an ideal day definitely a thought-upsetting post.

    Bula Kalter

    18 Jan 11 at 12:19 am

Leave a Reply

You must be logged in to post a comment.