Nearly 90 percent of shale oil can be recovered in surface mining, while less than 60 percent can be recovered in underground mining. Surface mining is therefore less expensive, making it more attractive to miners.
Which statement about shale-oil mining is false?
A)
No significant environmental or social impacts are noted.
B)
Oil shale must be processed on-site before transport.
C)
The volume of waste will exceed the volume of oil mined.
D)
It is very expensive to restore the mining operation when finished.
E)
Oil-shale mining was very popular during the height of the fuel shortage in the 1970s.
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