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Abandoned Mine Hazards
Test Description: Reviews hazards associated with abandoned mines
Instructions: Answer all questions to get your test result.
1) What pH value would be closest to acid mine drainage?
A
9.0
B
4.5
C
7.0
D
12.0
2) What is the highwall?
A
sediment piles that get carried to a stream
B
vertical face remaining after an area is surface mined
C
dam used to contain acid mine drainage
D
pile of overburden wastes
3) What often happens to solid mine wastes that are carried off by runoff?
A
are retained within waste impoundments
B
seep down into the soil
C
are taken up by vegetation
D
clog streams and rivers
4) What is a gob pile?
A
pond of acid mine drainage
B
collection of ore rock waiting for processing
C
waste removed from underground (subsurface) mine
D
soil that clogs a stream
5) What is a mine portal?
A
entrance to a drift mine or other mine tunnel
B
place where acid mine drainage is stored
C
place where hazardous equipment is kept
D
place where ore is stored for later use
6) Why are mine portals dangerous if left abandoned?
A
people, especially children, might be tempted to explore inside
B
it contains high amounts of toxic waste
C
it is where hazardous machines are stored
D
they collect large amounts of acid mine drainage
7) Which of the following is an example of subsidence?
A
opening of a mine portal
B
leaking of acid mine drainage to a nearby stream
C
flow of groundwater into a mine
D
caving in of the ground over an abandoned coal mine
8) How should a vertical shaft be treated after a mine is abandoned?
A
covered or barricaded
B
left open
C
have trees planted around it
D
filled with water
9) In what type of mine would a underground fire be most likely?
A
open-pit copper mine
B
diamond shaft mine
C
sand quarry
D
subsurface coal mine
10) What are hazardous water bodies at an abandoned mine site usually associated with?
A
dangerous highwalls
B
large waste piles
C
explosives
D
hazardous equipment and machinery
*select an answer for all questions
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