Answer:
During the 1960's the disclosure of enormous gas and oil fields in Alaska accelerated the change of most coal framework to other petroleum products. During this period Usibelli Coal Mine bought the Suntrana mine and the mining activities in the Matanuska coal fields stopped activity.
Depends how many peanuts to a single elephant
The answer is the spring equinox
Salt Lake City is the answer
Sea floor leveling.
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