This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Describe the coal reserves of the United States. What will be an ideal ... (Read 38 times)

washai

  • Hero Member
  • *****
  • Posts: 523
on: Jul 21, 2018
Describe the coal reserves of the United States.
 
  What will be an ideal response?

Question 2

Outline some of the major differences in the ways coal is mined.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jazzlynnnnn

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Jul 21, 2018
Answer to Question 1

The EIA estimates that there is 486 billion tons of coal in known deposits in the United States. That should be
enough to last hundreds of years at current rates of consumption. The United States has the largest known coal
reserves in the world.



Answer to Question 2

Coal near the surface is mined in what is often referred to as open pit or strip mines. In open pit mining, the
overburden (surface covering of earth) is removed and stored aside; the coal is removed; and the site is restored
using the overburden. Coal in deeper deposits is taken from underground mines. There are three main types of underground mines: shaft mines, slope mines, and drift mines. Shaft mines use vertical tunnels to gain access to
deeper coal deposits. Slope mines use tunnels that slope down more gently from the surface to the coal deposits.
Drift mines involve tunnels cut into the sides of mountains.



washai

  • Member
  • Posts: 523
Reply 2 on: Jul 21, 2018
Thanks for the timely response, appreciate it

tanna.moeller

  • Member
  • Posts: 328
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Dolores Huerta and Cesar Chavez, leaders of the United Farm Workers, discuss their 1968 strike of ... Dolores Huerta and Cesar Chavez, leaders of the United Farm Workers, discuss their 1968 strike of ...
One of the cultural privileges of being white in the United States is less suspicion of wrongdoing. One of the cultural privileges of being white in the United States is less suspicion of wrongdoing.
Different types of fog found throughout the United States Different types of fog found throughout the United States
An example of the sometimes drastic differences in placarding regulations in the United States ... An example of the sometimes drastic differences in placarding regulations in the United States ...
Types of Farms in the United States Types of Farms in the United States
Describe the Conceptual Forecasting Framework in your own words. Describe the Conceptual Forecasting Framework in your own words.
Video: Bone processes - resorption and deposition, remodeling and response to stress in adult bones

For a complete list of videos, visit our video library