How is coal extracted from mountaintop removal mines?
a.
Dynamite is used to create underground tunnels where miners go to extract the coal.
b.
Dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal.
c.
Coal in mountaintops is extracted by digging strips in the landscape to reach the coal.
d.
Placer deposits in mountain river bottoms are removed by sifting through sediment.
Answers (1)
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “How is coal extracted from mountaintop removal mines? a. Dynamite is used to create underground tunnels where miners go to extract the ...” in 📗 Chemistry if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
What is the number of electrons shared between the atoms in a molecule of nitrogen N2?
Answers (1)
What is the worth of one 60-pound bar of gold
Answers (1)
What is the valency of Al2O3 and why?
Answers (1)
Calculate the activation energy (ea in kj/mol for a reaction if the rate constant (k is 2.7 * 10-4 (m-1sec-1 at 600 k and 3.5 * 10-3 (m-1sec-1 at 650 k.
Answers (1)
What is the density of a cube that has a mass of 25 g in a volume of 125 cm 3
Answers (1)
New Questions in Chemistry
List at least two chemical reactions that resulted in a yellow, orange, or red precipitate. For these reactions, list the possible chemical name of the precipitate.
Answers (1)
You place air in a sealed can at stp. ypu triple its absolute temperture (K) while leaveing the volume constant. what happenes to the pressure
Answers (1)
A current of 10.4 a is applied to 1.25 l of a solution of 0.552 m hbr converting some of the h + to h2 (g), which bubbles out of solution.
Answers (1)
What is a greenhouse gas?
Answers (2)
Which statement best describes a mole?
Answers (2)