Compared with Surface Mining Techniques, Subsurface Mining

question 23

Multiple Choice

Compared with surface mining techniques, subsurface mining:

• A) disturbs more land.
• B) produces larger amounts of solid waste.
• C) targets renewable resources.
• D) is more dangerous.
• E) targets horizontal seams located near the surface.

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Definitions:

Neural Tube

is an embryonic structure that eventually develops into the brain and spinal cord during prenatal development.

Spina Bifida

A neural tube defect that results in spinal nerves growing outside of the vertebrae, often resulting in paralysis and developmental disability.

Anencephaly

A neural tube defect that results in the failure of all or part of the brain to develop, resulting in death prior to or shortly after birth.

Sciatica

A condition characterized by pain going down the leg from the lower back, often due to irritation of the sciatic nerve.