Which of the following would most likely be used to mine coal on hilly terrain?
a. open-pit mining
b. contour mining
c. area strip mining
d. strip mining
e. mountain-top removal
Answer: B
Which of the following would most likely be used to mine coal on hilly terrain?
a. open-pit mining
b. contour mining
c. area strip mining
d. strip mining
e. mountain-top removal
Answer: B